10 thINTERNATIONAL WORKSHOP Neogene of Central and South-Eastern Europe Neogene of Central and South-Eastern Europe NCSEE Neogene of Central and South-Eastern Europe Neogene of Central and South-Eastern Europe ABSTRACT VOLUME NCSEE Neogene of Central and South-Eastern Europe th 10 International Workshop th st May 27 to 31 , 2024 in Podčetrtek, Slovenia th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe 10th Neogene of Central and South-Eastern Europe Abstract Volume Published by / © Geološki zavod Slovenije Dimičeva 14, Ljubljana Editors: Miloš Bartol Kristina Ivančič Aleksander Horvat Graphic design: Staška Čertalič 2024 Free copy Kataložni zapis o publikaciji (CIP) pripravili v Narodni in univerzitetni knjižnici v Ljubljani COBISS.SI-ID 196098563 ISBN 978-961-6498-78-4 (PDF) Organisers Sponzors th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Keynote lectures 7 Structural overview of eastern Slovenia Jure Atanackov 9 Changes in ostracod assemblages: a case study from the Miocene deposits of the North Croatian Basin Valentina Hajek-Tadesse 11 “Old-new” concepts of stratigraphy, geodynamics and paleogeography of the Vienna Basin - based on re-evaluation of data from its northern part (Slovakia) Michal Kováč, Tamás Csibri, Klement Fordinál, Jozef Hók, Natália Hudáčková, Michal Jamrich, Peter Joniak, Marianna Kováčová, Andrej Ruman, Katarína Šarinová, Ľubomír Sliva, Michal Šujan, Adam Tomašových, Rastislav Vojtko 13 The legacy of the Tethys Ocean Dan V. Palcu Presentations 14 Miliolidae dominant assemblages in Central Paratethys: implications for Middle Miocene sediments Jaroslava Babejová-Kmecová, Edit Király, Katalin Báldi, Natália Hudáčková 16 Sarmatian and Pannonian nannofossil assemblages from the SW margin of the Central Paratethys Miloš Bartol, Miha Marinšek 18 Using bivalves and foraminifers to infer Serravallian seawater temperatures in Vienna Basin shallow waters Márius Bielich, Rastislav Milovský, Natália Hudáčková 20 Stratigraphic and paleoenvironmental insights into the Miocene deposits of the southeastern Pannonian Basin, Serbia Dejan Bojić , Dejan Radivojević 22 An integrative paleoenvironmental and chronostratigraphic study of the Neuhofen Formation (Lower Miocene, Germany, Central Paratethys) Stjepan Ćorić, Felix Hofmayer, Beatriz Hadler Boggiani, Rohit Soman, Juan David Andrade, Bettina Reichenbacher 24 Genus Sphaerogypsina, Miocene type species from the Vienna Basin and its ancestors and descendans Katica Drobne, Oleg Mandic, Anna Weinmann, Elena Zakrevskaja, P.A. Fokin, Vlasta Ćosović, Tim Cifer, Anton Praprotnik, Alenka Mauko Pranjić 26 Paratethys sea temperature evaluation based on oxygen isotope composition of Badenian foraminifera; Nježić locality (North Croatian Basin, Croatia) Karmen Fio Firi, Frane Marković, Marijan Kovačić, Morana Hernitz Kučenjak, Stjepan Ćorić, Đurđica Pezelj, Jorge E. Spangenberg th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Presentations 28 Integrated sedimentological, well log, seismic and palynological data of Upper Miocene sediments in the Northern Banat, Serbia Vladislav Gajić, Ivan Dulić, Janko Sovilj, Goran Bogićević, Irina Savić 29 How, when and where did the first „mid-Miocene“ marine transgression, happen in the Paratethys?; a case study from the North Croatian Basin Ines Galović, Vlasta Premec Fućek, Valentina Hajek-Tadesse, Tomislav Kurečić, Anita Grizelj, Krešimir Petrinjak 30 Cidaroids (Echinoidea, Cidaroida): pioneers in benthic ecosystem engineering Rok Gašparič, Tomáš Kočí, Martina Kočová Veselská, Tomaž Hitij 32 Coral-dwelling barnacles (Cirripedia, Pyrgomatidae) from the Neogene of Slovenia Rok Gašparič, Tomáš Kočí, Martina Kočová Veselská , John Buckeridge, Tomaž Hitij 34 The Lower Miocene succession of the southern Waschberg Unit in Lower Austria Holger Gebhardt, Stjepan Ćorić 35 New data on Miocene crocodylians from the Fore-Carpathian Basin and its foreland Marcin Górka, Jakub Březina, Milan Chroust, Rafał Kowalski, Sergi López-Torres, Mateusz Tałanda 37 Zircon U-Pb geochronology of Sarmatian bentonite from Hrvatsko Zagorje Basin (Croatia) Anita Grizelj, Réka Lukács, Ivan Mišur 38 Early Miocene large land mammals from the Drtija sand pit near Moravče Hitij Tomaž, Jure Žalohar, Šoster Aleš, Matija Križnar, Gašparič Rok 40 The Upper Badenian seagrass meadows from the NE part of the Vienna Basins – multiproxy evidence Katarína Holcová, Martina Havelcová, Natália Hudáčková, Šárka Hladilová, Katarína Šarinová, Michal Jamrich, Marianna Kováčová, Andrej Ruman 42 Decades of constant tweaks - microbiostratigraphic chaos of Vienna Basin (DCTMCVB) Natália Hudáčková, Michal Jamrich, Andrej Ruman 44 Preservation of burrowing shrimps (Malacostraca: Decapoda: Axiidea) in Miocene siliciclastics of the Central Paratethys Matúš Hyžný 45 A review of the Neogene sedimentary successions in Eastern Slovenia Kristina Ivančič, Miloš Bartol, Miha Marinšek, Polona Kralj, Eva Mencin Gale, Jure Atanackov, Aleksander Horvat 47 Authigenic 10Be/9Be dating and provenance of Late Miocene deposits from the North Croatian Basin (Bozara section, SW Pannonian Basin System, Croatia) Marijan Kovačić, Michal Šujan, Tomislav Kurečić, Frane Marković 49 The integral approach of the subsurface facies interpretation, Drava depression, Croatia Krešimir Krizmanić, Željka Marić Đureković, Morana Hernitz Kučenjak, Tamara Troskot Čorbić, Sanja Šuica, Mario Matošević, Goran Mikša th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Presentations 51 The insight on subsurface facies analysis and related depositional environments, Drava depression, Croatia Krešimir Krizmanić, Željka Marić Đureković, Morana Hernitz Kučenjak, Tamara Troskot Čorbić, Mario Matošević, Goran Mikša 53 Progress in dating and biozonation of the Sarmatian s.l. Stage in the Eastern Paratethys. Sergei Lazarev, Oleg Mandic, Marius Stoica, Stjepan Ćorić , Kakhaber Koiava, Davit Vasilyan 54 New findings of genus Creusia Leach, 1817 (Cirripedia: Pyrgomatidae) in the Badenian deposits of the Banovina region (Croatia) Valerije Makarun, Đurđica Pezelj, Karmen Fio Firi, Marijan Kovačić 55 Middle Miocene endemic mollusks from the Dinarides Lake System: a case study from the Bugojno Basin in Bosnia and Herzegovina Oleg Mandic, Mathias Harzhauser, Thomas A. Neubauer 57 Badenian Ostracods of North-Eastern Krško Basin Miha Marinšek, Valentina Hajek-Tadesse, Tea Kolar-Jurkovšek, Luka Gale 58 Neogene coals of Slovenia Miloš Markič 60 The first results of paleoecological interpretation of the Middle Miocene sediments in the North Croatian basin based on smaller benthic foraminifera, Case study: Striježevica borehole, Papuk Mt. Monika Milošević, Viktória Baranyi, Vlasta Ćosović, Valentina Hajek-Tadesse, Ines Galović, Mirjana Miknić 62 Exploring the lacustrine ostracods and mollusks: preliminary results of the Kongora section (Tomislavgrad Basin, Dinarides Lake System) Katja Mužek, Oleg Mandic, Valentina Hajek-Tadesse, Nevena Andrić-Tomašević 64 Challenges and Insights: Sequence Stratigraphy of Pannonian Coals in the Drmno Depression, Serbia Anastasia Ninić, Dragana Životić, Dejan Radivojević 65 Biostratigraphy of middle Miocene deposits overlying and underlying the Outer Carpathians based on calcareous nannoplankton – preliminary results Antonina Nosowska 66 Decoding the changes in Middle Miocene shelfal environments by studying foraminiferal assemblages: Bednja section (Hrvatsko Zagorje Basin, Croatia) Đurđica Pezelj, Jurica Sabol 67 Shelf-edge advancement in the southeastern perimeter of Lake Pannon, Banat (Serbia and Romania) Dejan Radivojević, Radonjić Miloš, Katona Lajos Tamás, Imre Magyar 69 Neogene Paleoenvironmental Dynamics: Insights from the Čerević Region in Northern Serbia’s Fruška Gora Raičković Katarina, Radivojević Dejan th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Presentations 70 Facies associations of Middle Miocene (Konkian of Eastern Paratethys) sedimentary succession of the Kura Basin (Ujarma section, Georgia) Yu.V. Rostovtseva 72 Fossils from the Upper Miocene (Pannonian) sands of the Pécsvárad sand pit (Eastern Mecsek Mts., SW Hungary) Krisztina Sebe, Márton Szabó, Zoltán Szentesi, Luca Pandolfi, Noémi Jankó, Imre Magyar 73 Macrofauna of the Lower – Middle Miocene lacustrine sediments of the Mecsek mountains, SW Hungary: preliminary results Krisztina Sebe, Márton Szabó, Zoltán Szentesi, Luca Pandolfi, Soma Budai, Máté Gregorits 74 Hunting for the Paratethyan acorn barnacles (Cirripedia: Balanomorpha: Balanidae) Jasenka Sremac, Marija Bošnjak, Josipa Velić, Marijan Kovačić 76 Pectinidae and Cardiidae from the middle Miocene of Poland – witnesses of environmental changes in the Paratethys Barbara Studencka 78 Suitability of the authigenic 10Be/9Be dating method for epicontinental basin sequences: A sedimentological and sequence-stratigraphic perspective Michal Šujan, Kishan Aherwar, Régis Braucher , Andrej Chyba, Katarína Šarinová, Tomáš Vlček, Arjan de Leeuw, Anton Matoshko, Alessandro Amorosi, Bruno Campo, Imre Magyar, Orsolya Sztanó, Krisztina Sebe, Bronislava Lalinská-Voleková, Anita Grizelj, Barbara Rózsová, Aster Team 80 New insights gained from zircon U-Pb dating of Miocene volcaniclastic deposits of the Sinj Basin (Dinaride Lake System, Croatia) Robert Šamarija, Nevena Andrić-Tomašević, Oleg Mandic, Katja Mužek, Armin Zeh, Davor Pavelić 81 Characterizing the ~15.3 Ma explosive eruption: Insights from volcaniclastic deposits across the Pannonian Basin and the Dinarides Nina Trinajstić, Mihovil Brlek, Julie Schindlbeck-Belo, Simon Richard Tapster, Steffen Kutterolf, Radovan Avanić, Sanja Šuica, Vlatko Brčić, Duje Kukoč, Samuel Rybar, Katarína Šarinová, Monika Milošević , Ivan Mišur 82 New updates on the Late Miocene land vertebrate faunas from the north of the Eastern Paratethys Davit Vasilyan, Sergej Lazarev, Oleg Mandic, Marius Stoica, Damien Becker, Michal Šujan, Andrian Delinschi 83 Biostratigraphy and paleoecology of the middle Miocene deposits of Dilj gora Mt. (NE Croatia), Central Paratethys Davor Vrsaljko, Vlasta Premec Fućek, Valentina Hajek-Tadesse, Mario Matošević 85 Assessing the preservation of spatangoid echinoids in hypoxic environments (Vienna Basin, Miocene, Central Paratethys) Adam Tomašových, Ines Galović, Natália Hudáčková N., Matúš Hyžný, Andrej Ruman, Samuel Rybár, Ján Schlögl, Vladimír Šimo th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Jure Atanackov Geological Survey of Slovenia, jure.atanackov@geo-zs.si Structural overview of eastern Slovenia Eastern Slovenia is a structurally complex region, the adriatic Fault System and the northernmost edge of result of over 50 million years of vigorous tectonic the Mid-Hungarian Zone, the Balaton Fault also un-activity in a varied succession of tectonic phases. The derwent extensional Neogene tectonics as evidenced region is an internal part of the broad Eurasia-Africa by the structure in the Krško Basin (Poljak, 2017), collision zone, northeast of the triple junction between where the asynchronous Raka and Globoko Basins the Eurasian lithospheric plate, the Adria microplate reach depths up to 1500 m. and the Pannonian lithosphere (Schmid et al., 2008, A regional stress field and tectonic inversion occurred 2020). The Pannonian basin was an area of extensional in the Pliocene, resulting in E-W to ENE-WSE result-tectonics throughout much of the Neogene, through ing compressional structures. In NE Slovenia normal rifting, lateral extrusion of the Eastern Alps, subduc- faulting was reactivated as reverse to transpressive tion, slab roll-back and break-off in the Carpathians faults, including the North and South Haloze Faults and the associated lithospheric thinning, followed by and the Ljutomer Fault (Atanackov et al., 2021), thermal subsidence of the area. Extensional tecton- with associated large-scale folding, including the Orics are reflected structurally in a series of extensional mož-Selnica Anticline and smaller-scale folds, such as and transtensional basins along graben and half-gra- the Petišovci Anticline. These structures form the NW ben systems, and a thinned crust across the entire re- extreme part of the Mid-Hungarian Zone and repregion, with the MOHO at only approximately 25-30 km sent the W-most extension of the Balaton Fault. No depth. A thick succession of Neogene syntectonic and significant active faulting occurs north of this line. Part post-tectonic sediments records the tectonic evolution of the regional shortening is taken up by the dextral of the region and its sedimentary environments. strike-slip faults of the Periadriatic Fault Sytem and the The northeastern part of Slovenia is structurally dom- Mid-Hungarian Zone, most importantly the Šoštanj inated by a large-scale Neogene extensional tectonics Fault, Labot / Lavanttal Fault and the Donat Fault. All which resulted in the formation of a metamorphic these faults are active, with estimated slip rates on the core complex, and a number of sedimentary basins. order of 0.5-1 mm/yr (Atanackov et al., 2021). South The metamorphic core complex comprises the Pohor- of the Periadriatic Fault System, delineated by the Sava je and Kozjak domes, in which the metamorphic rocks and Šoštanj Faults, the regional compression resulted outcrop at the surface and the Murska Sobota exten- in the formation the Sava Folds (Placer, 1998). This is sional block, buried under a kilometer of Neogene and a fold and thrust belt of E-W to ENE-WSW trend-Quaternary sediments, which formed along the Koz- ing large scale folds. Formation is post-Sarmatian in jak, Pohorje and Bajan detachments. A number of ba- the north (Placer, 1998) and post middle-Pannonian sins formed along the detachments and higher-order in the south (Poljak, 2017). The folds are confirmed normal faulting that presumably soles to the detach- to be active in the south-southeastern part of the Sava ments at depth, including the Mura-Zala Basin, the Folds. The area is also part of heightened seismicity, Slovenj Gradec Basin, the Radgona Subbasin, Ljutom- with moderate seismicity rates and moderate historic er Subbasin and the Ribnica-Selnica Trough (Fodor et earthquakes, the largest of which is the 1917 Brežice 7 al., 2001; Fodor et al., 2021), the latter also known as earthquake with Mw ~5.5-6 (Grünthal et al., 2013; the Haloze-Ljutomer-Budafa Subbasin (Fodor et al., ARSO, 2020). 2001). Extensional tectonics persisted until the Sarma- tian, after which the entire region underwent thermal subsidence, which resulted in the deposition of a fur- ther, post-tectonic succession of sediments (Fodor et al., 2002). Neogene sediment thickness reaches up to approximately 3000 m in the Radgona Subbasin and over 5000 m in the Ljutomer Subbasin (Gosar, 2005). The southeastern part of Slovenia, south of the Peri- eynote lecturesK th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References ARSO 2020. Močni potresi v preteklosti (Strong earthquakes in the past). Available at: http://www.arso. gov.si/potresi/potresna%20aktivnost/Mo%c4%8dni_potresi_v_preteklosti.pdf (in Slovenian, with English summary). (Accessed April 20, 2020). Atanackov, J. et al. 2021. Frontiers in Earth Science. doi: 10.3389/feart.2021.604388 Fodor et al. 2002. Geologija 45 (1): 103–14. doi: https://doi.org/10.5474/geologija.2002.009. Gosar, A. 2005. Geologica Carpathica. 56 (2), http://www.geologicacarpathica.com/browse-journal/volumes/56-3/article-316/ Grünthal et al. 2013. Journal of Seizmology 17 (4), doi:10.1007/s10950-013-9379-y Placer, Ladislav. 1998. Geologija. 41, doi: https://doi.org/10.5474/geologija.1998.013. Poljak, M. 2017. Geological Map of the Eastern Part of the Krško Basin 1:25,000 Explanatory Booklet. Geological Survey of Slovenia Schmid, S. M. et al. 2008. Swiss Journal of Geosciences. 101, doi: 10.1007/s00015-008-1247-3 Schmid, S.M. et al. 2020. Gondwana Research, 78, doi: 10.1016/j.gr.2019.07.005 8 eynote lecturesK th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Valentina Hajek-Tadesse Croatian Geological Survey, Zagreb, Croatia, tadesse@hgi-cgs.hr Changes in ostracod assemblages: a case study from the Miocene deposits of the North Croatian Basin During the last twenty years, a comprehensive inves- Considering the species’ paleobiogeography, the pres- tigation of non-marine and marine ostracod assem- ence of “migrated ostracod species” in Miocene de- blages has been performed on Miocene samples from posits of NCB can detect an open connection with the North Croatian Basin (NCB). NCB belongs to the a wider area of Central Europe and the Dinaride south-western margin of the Central Paratethys, and Lake System in the Lower Miocene; the Mediterrane-its evolution is connected to the Miocene global sea an Sea and the Indian Ocean in the Middle Miocene; level changes and the connection with the Mediterra-and to the different Basins of Lake Pannon and the nean Sea. Paleo-Mediterranean during the Late Miocene. Here we present the main results of the ostracod in- This research was conducted in the scope of the in- vestigation. The Miocene ostracods are crucial in bi- ternal research project „ Development of Miocene ostratigraphy, paleobiogeography, and paleoenviron- paleoenvironments in Croatia and their connection mental reconstruction. According to the previously with global events (RAMPA) at the Croatian Geo-established ostracod biozones (Jiříček and Říha, 1991; logical Survey, funded by the National Recovery and Sokač, 1972), the determination of the biozones for Resilience Plan 2021–2026 of the European Union – Miocene stages is enabled. Clearly defined biozones NextGenerationEU, and monitored by the Ministry of can be easily correlated to the other regional basins Science and Education of the Republic of Croatia.“ of Paratethys and the Mediterranean. Ostracod bi- ozonation gives the best results for the Badenian, Sar- matian, and Pannonian marine and brackish deposits (Hajek-Tadesse and Prtoljan, 2011; Grizelj et al., 2023; Mužek et al., 2023); while biozonations of non-marine Early and Middle Miocene deposits are difficult due to endemic ostracod development (Hajek-Tadesse et al., 2009, 2023; Hajek-Tadesse, 2020). Ostracods are excellent tools for precisely and clearly distinguishing non-marine, marine, and brackish envi- ronments and barely noticeable environmental chang- es. In marginal transitional environments, ostracods are used primarily as hydrodynamics and salinity indica- tors, and ostracod species can first document possible exchanges between lakes and seas. The composition of non-marine ostracod assemblages from the oldest Early/Middle Miocene lake deposits depends mainly on the salinity and depth of the lake water. According 9 to the ostracod species, the first marine ingression into the lake in NCB was registered (Hajek-Tadesse et al., 2009, 2023; Mandic et al., 2019; Marković et al., 2021). Deep marine ostracods are best preserved and richest in lower Badenian, while in upper Badenian and Sarma- tian, the number of deep-water ostracods decreased, and the number of shallow-water ostracods increased. Finally, at the beginning of the Sarmatian-Pannonian Extinction Event, ostracod fauna changed from ma- eynote lectures rine to endemic Pannonian brackish assemblages. K th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References Grizelj, A. et al. 2023. Geologica Carpathica 74, doi: https://doi.org/10.31577/GeolCarp.2023.02 Hajek-Tadesse, V., 2020. Paleobiodiversity and Palaeoenvironments 100, doi: https://doi.org/10.1007/s12549 -019-00403-5 Hajek-Tadesse, V. et al. 2009. Geologica Carpathica 60, doi: https://doi.org/10.2478/v10096-009-0017-0 Hajek-Tadesse, V., Prtoljan, B. 2011. Geologica Carpathica 62 (5), doi: https://doi.org/10.2478/v10096-011-0032-9 Hajek-Tadesse, V. et al. 2023. Geobios 77, doi: https://doi.org/10.1016/J.GEOBIOS.2023.01.005 Jiriček, R., Riha, J. 1990. Proceedings of the International Symposium on Shallow Tethys, Saito Ho-on Kai Special Publication 3 Mandic, O. et al. 2019. Palaeogeography, Palaeoclimatology, Palaeoecology 516, doi: https://doi.org/10.1016/j.palaeo.2018.12.003 Marković, F. et al. 2021. Geologica Croatica 74, doi: https://doi.org/10.4154/gc.2021.18 Sokač, A. 1978. Pleistocene Ostracode fauna of the Pannonian Basin in Croatia. Palaeontologia Jugoslavica 20. 10 eynote lecturesK th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Michal Kováč1, Tamás Csibri2, Klement Fordinál3, Jozef Hók1, Natália Hudáčková1, Michal Jamrich1, Peter Joniak1, Marianna Kováčová1, Andrej Ruman1, Katarína Šarinová4, Ľubomír Sliva2, Michal Šujan1, Adam Tomašových5, Rastislav Vojtko1 1 Department of Geology and Paleontology, Comenius University in Bratislava, Slovakia, kovacm@uniba.sk 2 NAFTA a.s., Slovakia, 3 State Geological Institute of Dionýz Štúr, Bratislava, Slovakia, 4 Department of Mineralogy, Petrology and Economic Geology, Comenius University in Bratislava, Slovakia, 5 Earth Science Institute and Academy of Sciences, Bratislava, Slovakia “Old-new” concepts of stratigraphy, geodynamics and paleogeography of the Vienna Basin - based on re-evaluation of data from its northern part (Slovakia) More than a hundred years of the geological research The Lower Miocene sediments documented in the at the Alpine-Carpathian junction area yielded exten-northern Vienna Basin represent a remnant of a larger sive datasets, however, accompanied by multiple con- basin system, which formed in compressive to trans- cepts of stratigraphy geodynamics and paleogeogra- pressive tectonic regime. Depocenters of this wedge- phy, which were/are sometimes contradictory. The top basin developed between the advancing front of diverse depositional systems of the Vienna Basin, the neo-Alpine accretionary wedge and backstop, including alluvial, deltaic, littoral and offshore marine formed by the paleo-alpine consolidated units of the sediments bear information about the age, sedimen-orogene. The Eggenburgian onshore marine deposits tary environment, tectonics, paleogeography, climate, of the Dobrá Voda Mb. and the offshore “schlier” of sea level changes, and about the time-varying connec-the Lužice/Čausa fms., are overlain by the Ottnangian tions of the Central Paratethys towards the Worldś transgressive Chropov and Veterník mbs., passing to Ocean. A re-evaluation of the available results from the “schlier” of Cunín Mb. of the Lužice Fm. The Ot-the northeastern part of the basin, located in Slovakia, tnangian Planinka Fm. includes material derived from substantially relying on petroleum research data, should the paleo-Alpine consolidated Central Western Car-support some of the existing hypotheses and, on the pathians. contrary, disprove the insufficiently supported ones. During the Karpatian, the basinal, deep-water, “schli- A significant advance in our proposed concept of er” of the Lakšárská Nová Ves (LNV) Fm. deposit-biostratigraphy is omitting the formerly widely used ed. Source of the sandy Týnec Mb. documents local lithostratigraphic correlations based on benthic taxa, uplifts of the accretionary wedge ribbons. The delta-which include inherently diachronous paleoecological ic Jablonica Fm. polymict conglomerates source area zones (e.g., Lagenidae or Agglutinated foraminiferal were the Western Carpathians, in contrast to the Ader-zones). The documented shelf-slope clinoforms, pres- klaa Fm. derived from the Eastern Alps. Riverine sed- 11 ent in the Karpatian, Badenian, Sarmatian and pos- iments of this formation pass towards the north into sibly Pannonian successions, represent an important the deltaic Šaštín Sand Mb., situated at the base of the feature of the basin fill, which is a strong indication Závod Fm. The late Karpatian accelerated subsidence of the migration of the depositional system across led to deposition of the Prietrž Mb. turbidites of LNV the accommodation space at a given time. Diachronic Fm. At the Lower/Middle Miocene boundary, the sea boundaries of the lithostratigraphic units can therefore level fall led to formation of incised valleys. The Kúty be expected. However, verification of this hypothesis Fm. is regarded as the earliest Badenian canyon fill, in the future requires a detailed sequence-stratigraphic although some authors include them to the Karpatian. investigation and accurate geochronological data. eynote lecturesK th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe The sedimentary record of the wedge-top basin is genetically normal regression of the deltaic Čáry and alluvial unrelated to the subsequently opened Middle and Late Miocene Gbely fms. grabens, half grabens, and elevations of the actual Vienna Ba- Although the global sea-level changes are to some sin, formed in a trans-tensional to extensional tectonic regime. degree traceable in the Vienna Basin fill, as its dep-The synrift subsidence rate varied laterally across the basin. The ositional environments were connected with the sur-re-shaping of the drainage network resulted in formation of a rounding seas across the basins of the Alpine and Car-large delta system along the SW, W margins of the basin. The pathian Foredeep and along a Trans-Tethyan Trench Malé Karpaty horst structure began to be uplifted along the east- Corridor between the Eastern Alps and Dinarides. ern margins, feeding the basin with coarse clastic sediment supply. The ultimate eustatic impact on the basin sedimentary The Early Badenian rifting included the Kúty Fm. lowstand, record is frequently overwhelmed by local tectonics transgression and highstand of the Lanžhot Fm., together and by changes in sediment supply. Besides the Early with the Devínska Nová Ves Fm. The Late Badenian rifting and Middle Miocene marine connections of the Cen-sequence included the lowstand of the onshore Žižkov Fm. tral Paratethys towards the Worldś Ocean across the and offshore Jakubov Mb., transgressive littoral Stupava Fm., Mediterranean, well established in the scientific com-followed by highstand offshore Studienka Mb. of Hrušky Fm., munity, we are considering a possible contact between passing to the normal regressive deltaic Matzen Fm. The Sar- the Central and Eastern Paratethys (Transcarpathian matian rifting included basal, terrestrial Kopčany and Radimov Trench Corridor). Based on the obtained results this mbs., basinal transgressive to regressive Holíč Fm. and deltaic seaway was likely active at the Early–Middle Miocene Skalica Fm. representing the highstand normal regression. The boundary, or in the latest Kozakhurian - the earliest supposed Late Miocene rifting with Lake Pannon transgression Tarkhanian regional stage (16–15 Ma). accumulated the lacustrine Bzenec Fm., followed by highstand The Slovak Research and Development Agency (APVV) supported the study under contracts APVV-21-281, APVV-20-0079, APVV-20-0120, APVV-16-0121, APVV-22-0523, VEGA 1/0533/21. References Grizelj, A. et al. 2023. Geologica Carpathica 74, doi: https://doi.org/10.31577/GeolCarp.2023.02 12 Hajek-Tadesse, V., 2020. Paleobiodiversity and Palaeoenvironments 100, doi: https://doi.org/10.1007/s12549 -019-00403-5 Hajek-Tadesse, V. et al. 2009. Geologica Carpathica 60, doi: https://doi.org/10.2478/v10096-009-0017-0 Hajek-Tadesse, V., Prtoljan, B. 2011. Geologica Carpathica 62 (5), doi: https://doi.org/10.2478/v10096-011-0032-9 Hajek-Tadesse, V. et al. 2023. Geobios 77, doi: https://doi.org/10.1016/J.GEOBIOS.2023.01.005 Jiriček, R., Riha, J. 1990. Proceedings of the International Symposium on Shallow Tethys, Saito Ho-on Kai Special Publication 3 Mandic, O. et al. 2019. Palaeogeography, Palaeoclimatology, Palaeoecology 516, doi: https://doi.org/10.1016/j.palaeo.2018.12.003 eynote lectures Marković, F. et al. 2021. Geologica Croatica 74, doi: https://doi.org/10.4154/gc.2021.18 K Sokač, A. 1978. Pleistocene Ostracode fauna of the Pannonian Basin in Croatia. Palaeontologia Jugoslavica 20. th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Dan V. Palcu National Institute of Marine Geology and Geo-ecology, GeoEcoMar, Bucharest, Romania Utrecht University, Fort Hoofddijk Paleomagnetic Lab, Department of Earth Sciences, the Netherlands, D.V.Palcu@uu.nl Instituto Oceanografico, Universidade do São Paulo, Brazil The legacy of the Tethys Ocean The Paratethys Sea, a vast anoxic water body, played a pivotal role in the geological and environmental his- tory of Central Eurasia during the Neogene period. Originating from the remnants of the Tethys Ocean, this extensive sea significantly influenced the regional climate and geography. During the Neogene, Paratethys underwent dynamic changes in connectivity, alternating between full ma- rine conditions and evaporitic crises. These shifts led to the deposition of a variety of sediments, includ- ing marine molasses, evaporites, and continental-la- custrine materials. Eventually, the sea evolved into a massive megalake, filling with clastic sediments from surrounding mountain ranges. This transformation was a critical phase in shaping Central Eurasia’s pale- ogeographic and paleoenvironmental landscape, un- derscoring the impact of marine connectivity on the region’s depositional environments over time. The variable landscape and environments of the Para- tethys Sea played a crucial role in shaping the climate, ecosystems, and even human evolution in Eurasia and beyond. The fluctuating conditions of this extensive water body created diverse habitats, fostering unique biological communities and influencing regional cli- mate patterns over geological timescales. As Paratethys transitioned from an anoxic sea to a sprawling meg- alake, it not only shaped the physical geography but also served as a critical ecological and climatic buff- er. These environmental shifts likely influenced the floristic and faunal dispersal patterns and adaptation strategies, highlighting the profound interconnected- 13 ness between Earth’s geological evolution and the de- velopment of its inhabitants. Understanding ancient environments like Paratethys is vital for grasping the broader context of Earth’s history. eynote lecturesK th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Jaroslava Babejová-Kmecová1, Edit Király2, Katalin Báldi3, Natália Hudáčková1 1 Comenius University, Faculty of Natural Sciences, Department of Geology and Paleontology, Bratislava, Slovakia, kmecova45@uniba.sk 2 Mining and Geological Survey of Hungary, Budapest, Hungary 3 Eötvös Loránd University, Faculty of Natural Sciences, Department of Physical and Applied Geology, Budapest, Hungary Miliolidae dominant assemblages in Central Paratethys: implications for Middle Miocene sediments During the Neogene, the connection between new- core section, Dorneşti outcrop, Costeşti section, and ly developed Mediterranean Sea and the Paratethys, Central Anatolian Basin - Tuglu section). The meth-as well as among individual basins, became unstable odology was based on laboratory work, LA-ICP-MS (Rögl, 1999). The isolation of Paratethys caused the analyses (element/Ca ratios, MZ 102) and the statis-formation of endemic fauna and divided it into the tical methods using the programs R (R Development extensive Eastern Paratethys and the smaller parts of Core Team, 2016) and PAST – Paleontological Statis-Western and Central Paratethys (Báldi, 2006; Piller et tics version 4.10 (Hammer et al., 2001). The foraminif-al., 2007). The Central Paratethys includes the Panno- era assemblages were integrated into morphological nian basin system and extends from the foreland of epiphytes groups (B, C and D; Langer, 1988) and in-the East Alpine Basin of lower Austria to Moldova fauna (Murray, 2006). The composition of trace ele- (Seneš, 1961). ments in foraminifera calcite (Mg/Ca, Mn/Ca, Ba/Ca) The aim of this work is to study middle Miocene sed- were measured in the most abundant miliolid species: iments with predominance of miliolids from the Cen- Articulina problema, Varidentella rotunda, Pseudotriloculina tral Paratethys. Our study attempts: A) to determine the consobrina, Siphonaperta lucida and one hyaline species reason for the predominance of miliolids in these sedi- Porosononion granosum. ments; B) to compare standard methods with new geo- Our study defined three great environmental groups chemical methods, and C) to determine the paleoenvi- with different sample composition and two smaller ronmental conditions during this period. Miliolidae are groups. The first group is defined by 51% of infaunal well known for specific environmental requirements, species preferring brackish-hypersaline lagoons, estu-living conditions, substrates and for different salinity aries, and inner shelf with occasional suboxia/anoxia. and oxygen-level tolerance (Sen Gupta, 2003). The second major group is represented by over 67% For this study we collected samples and data from sev- (from which 14% are EP-C, P. granosum) of epifaunal eral localities of Serravallian age (Dumitriu et al., 2017; species and epiphytes inhabiting marine-hypersaline Šarinová et al., 2018; Babejová-Kmecová et al., 2022) lagoons to shelf. The third group is represented by with horizons of predominance of miliolids (Vienna significant dominance (97%) of epifaunal epiphytic Basin – borehole cores Rohožník 112, Poddvorov 96 species living in marine-hypersaline shallow lagoons and 118, Suchohrad 63, MZ 102, MZ 93 and MZ 34; to inner shelf preferring oxic conditions. The analysis of the shells from MZ 102 is also showing changes 14 Danube basin – borehole ŠVM 1 and Ivanka 1; East Slovakian Neogene Basin – borehole Albinov 4, Polish of the dissolved oxygen in the water column, as well Carpathian Foredeep Basin - Jamnica M-83, Machów; as changes in salinity. These results are comparable to Eastern Carpathian Foreland Basin - FH3P1 Rădăuţi those using standard methodology. Presentations The study was supported by the projects: APVV-20-0079, VEGA-2/0169/19, APVV-20-0120 and VEGA 2/0013/20. th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References Babejová-Kmecová J. et al. 2022. Acta Geologica Slovaca 14(1) Báldi, K. 2006. International Journal of Earth Sciences 95(1), doi: https://doi.org/10.1007/s00531-005-0019-9 Dumitriu, S.D. et al. 2017. Geologica Carpathica 68(5), doi: https://doi.org/10.1515/geoca-2017-0028 Hammer, Ø. Et al. 2001. Paleontologia Electronica 4, https://palaeo-electronica.org/2001_1/past/past.pdf Langer, M. 1988. Revue de paléobiologie 2, https://www.researchgate.net/publication/235217515_Recent_Epi-phytic_Foraminifera_from_Vulcano_Mediterranean_Sea Murray, J.W. 2006. Cambridge University Press, doi: https://doi.org/10.1017/cbo9780511535529 Piller, W.E. et al. 2007. Statigraphy 4(2), doi: https://doi.org/10.29041/strat.04.2.09 Rögl, F. 1999. Geologica Carpathica 50(4), https://nhm-wien.ac.at/jart/prj3/nhm-resp/data/uploads/mitarbeit-er_dokumente/roegl/1999_Roegl_Palgeo_GeolCarp.pdf Šarinová K. et al. 2018. Geologica Carpathica 69, doi: https://doi.org/10.1515/geoca-2018-0023 Sen Gupta, B. K., Barun K. 2003. Springer Dordrecht, doi: https://doi.org/10.1007/0-306-48104-9 Seneš, J. 1961. Geologické Práce 60 15 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Miloš Bartol, Miha Marinšek Geological Survey of Slovenia, Ljubljana, Slovenia, milos.bartol@geo-zs.si Sarmatian and Pannonian nannofossil assemblages from the SW margin of the Central Paratethys The Kozjansko area belonged to a marginal SW part The Sarmatian is usually interpreted as a time of low-of the Central Paratethys with sedimentation tak- ered salinity and brackish conditions in the Central ing place between the Kiscellian and the Pannonian Paratethys and the study area (Aničić et al, 2002). Con- (Aničić et al, 2002). A 1500 m Miocene sedimentary trary to this established view, the studied Sarmatian sequence was studied for nannofossils and ostracods. assemblages are diverse and consistent with marine The ostracod assemblages from the lower part of the environment. The constantly present and occasionally section are of lower Sarmatian age, while those from common ascidian spicules, belonging to stenohaline tu-the upper part indicates Pannonian age. Nannofossil nicates (Łukowiak et al., 2016) support the fully marine assemblages from the lower part of the section can be character of the studied Sarmatian deposits as well. placed into standard nannoplankton biozones NN6, Samples from the top of the Sarmatian succession NN7 and, possibly, NN8, while the correlation of the were barren of nannofossils, which possibly reflects Pannonian assemblages with standard nannofossil bi- a sea-level lowstand at the Sarmatian/Pannonian ozones is difficult due to endemic developments. boundary corresponding to the situation observed in The oldest determined nannofossil assemblages be- the Vienna Basin by Kovač et al. (2018). long to the biozone NN6 spanning the Late Badenian In agreement with studies from other Paratethyan and Early Sarmatian. The age was determined on the Pannonian sites (Chira et al., 2021; Čorić 2021; Gal-basis of the absence of Spenolithus moriformis, com- ović, 2020), Pannonian nannofossil assemblages from mon specimens of Calcidiscus pataecus (acme reported Imenska gorca contain endemic species, which were in NN6 just above the Badenian/Sarmatian bounda- observed here for the first time in Slovenia. I solithus ry across the Central Paratethys (e.g. Galović, 2020)), semenenko and Planolithus eggeri appear first (prominent the presence of Helicosphaera walbersdorfensis, large form in samples IM-19 to IM 28) along with the genus of Reticulofenestra pseuboumbilicus and the elliptical form Praenoelaerhabdus. In turn they are replaced by the of Coronocyclus nitescens. A few individual specimens of genus Noelaerhabdus (first occurrence in sample IM-Discoaster kugleri, marker of the biozone NN7, have 28), which becomes increasingly common and forms been detected in a short interval in the middle part of nearly monospecific assemblages near the top of the the section (samples IM-12H to IM-12K). The genus studied sequence. Catinaster, marker of the biozone NN8, was not ob- In contrast to the Sarmatian, Pannonian nannofossil served. While the last common occurrence, and LO assemblages are marked by significant shifts in diver-of Coccolithus miopelagicus and the LO of Helicosphaera sity. They are composed largely or predominantly of walbersdorfensis, which are used to approximate NN7/ endemic taxa and much less affected by redeposition. NN8 boundary (e.g. Galović, 2020) were detected, This reflects stable marine conditions throughout the we cannot correlate the upper part of the Sarmatian Sarmatian and large-scale environmental fluctuations succession with NN8 as the Sarmatian/Pannonian 16 boundary is assigned an age of 11.6 Ma (Piller et al., in the Pannonian. 2007) within NN7. Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References Aničić, B. et al. 2002. Geologija 45(1), doi: https://doi.org/10.5474/geologija.2002.017 Chira, C.M. et al. 2021. Acta Palaeontologica Romaniae 17(2), doi: https://doi.org/10.35463/j.apr.2021.02.04 Čorić, S. 2021. Bulletin of the Hungarian Geological Society 151(3), doi: https://doi.org/10.23928/foldt. kozl.2021.151.3.253 Galović, I. 2020. Marine Micropaleontology 161, https://doi.org/10.1016/j.marmicro.2020.101928 Łukowiak, M.A. et al. 2016. Geobios 49, https://doi.org/10.1016/j.geobios.2016.01.020 Kovač, M. et al. 2018. Geologica Carpathica 69(3), doi: https://doi.org/10.1515/geoca-2018-0017 Piller, W.E. et al. 2007. Stratigraphy 4(2), doi: https://doi.org/10.29041/strat.04.2.09 17 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Márius Bielich1, Rastislav Milovský2, Natália Hudáčková1 1 Comenius University, Faculty of Natural Sciences, Department of Geology and Paleontology, Bratislava, Slovakia, bielich3@uniba.sk 2 Earth Science Institute of Slovak Academy of Sciences, Banská Bystrica, Slovakia Using bivalves and foraminifers to infer Serravallian seawater temperatures in Vienna Basin shallow waters Currently, there is significant research focus on inter- 30 individuals per species were used in geochemical preting paleoenvironments and understanding eco- analyses (126 analyses in total). The shells of G. desh- system resilience. Paleoenvironmental reconstruction ayesi were embedded in epoxy resin and cut in half entails considering various factors like salinity, trophic longitudinally. Altogether 123 samples were collected conditions, and freshwater influx. Among these fac-from the shells by use of New Wave Micromill in ac- tors, paleotemperature holds particular importance. cordance with sclerochronological methods (Schöne a Both present and ancient small marginal seas exhibit Surge, 2012). Geochemical analyses were performed rapid responses to changes in climate-affecting factors, on isotope ratio mass spectrometer (McCrea, 1950). rendering them optimal for studying resulting altera- Temperatures were calculated according to their spec- tions and their consequences. The bays of the Parate- ified age through the Serravallian. Different equations thys can be used for such small-scale studies yet it is were used to calculate temperatures due to the arag-necessary to carefully select appropriate fossil organ- onite composition of bivalve shells and calcareous isms and geochemical analyses employed. tests of foraminifers. Equation used for bivalve was For purposes of our research the following calcareous proposed by Dettmann et al. (1999). Equation used foraminifera: Ammonia parkinsoniana, Ammonia inflata, for foraminifers was proposed by Shackleton (1975). Elphidium glabrum, Bulimina elongata, Heterolepa dutem-Results of geochemic analyses revealed the values of plei and aragonite bivalve shells of Glycymeris deshayesi (δ18O) for each site. Site BM showed values of (δ18O) were chosen. These organisms precipitate their tests between -1,96 to 2,09‰ for bivalve shell and for fo-and shells in equilibrium with the surrounding water raminiferas values ranged between -1,18 to 2,19‰ by which chemical signals and different elements are (δ18O). Site DNV values ranged between -3,25 to bound and preserved (Peral et al., 2022). Stable iso-2,61‰ (δ18O). Site LNV values ranged between -4,22 topes analyses of (δ18O, δ13C) were used in our re- to 1,81‰ (δ18O). Site HC-4 values ranged between search. Through the (δ18O) isotopic values we calculat- -4,99 to -0,42‰ (δ18O). Final calculated temperatures ed the approximate temperatures of surrounding sea in all sites ranged between 5 and 35°C. On the G. desh-which the shells and tests precipitated in. ayesi shell from site BM seasonal temperature changes were observed throughout the bivalve lifespan. Tem- Samples used in our study come from north-eastern perature values during warm season averaged around (Slovak part) of Vienna Basin, part of Central Para-22°C, through the cold season average temperature tethys. Studied samples were collected from outcrops was 15,.7°C. The results showed us that different (Borský Mikuláš – vinohrádky/BM – early Serravalli-studied sites sedimented in various environments, an, Devínska Nová Ves – clay pit/DNV – early Ser- from deep cold waters with dysoxic sediments (DNV) 18 ravallian, Lakšárska Nová Ves/LNV – early Serravalli- through shallow waters with good oxygen input (BM, an) and from the well (Holíč HC-4 – late Serravalian). HC-4). At DNV and LNV sites the paleoenvironment Methods used in preparation for foraminiferal analy-changed through the sedimentation of the studied ses were wet sieving and picking. Approximately 250 succession. Site HC-4 contained some redeposited fo-tests of foraminifera from each sample was picked for raminifera tests. broad micropaleontological analyses, from which 10 to This research was supported by the Slovak Research and Development Agency under contracts No. APVV-22-0523, Presentations APVV-20-0079, VEGA2/0169/19, VEGA 2/0106/23. Special thanks to Adam Tomašových DrSc. for valuable advising. th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References Dettman, D. L. et al. 1999. Geochimica et Cosmochimica Acta 63(7), https://doi.org/10.1016/S0016-7037(99)00020-4 McCrea, J. M. 1950. The Journal of Chemical Physics 18(6), doi: https://doi.org/10.1063/1.1747785 Peral, M. et al. 2022. Geochimica et Cosmochimica Acta 339, doi: https://doi.org/10.1016/j.gca.2022.10.030 Schöne, B. R., Surge, D. M. 2012. Treatise online 46, doi: https://doi.org/10.17161/to.v0i0.4297 Shackleton, N. J. 1975. Initial Reports Deep Sea Drilling Project 29, doi: https://doi.org/10.2973/DSDP. PROC.29.117.1975 19 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Dejan Bojić 1,2, Dejan Radivojević 1,2 1 University of Belgrade, Faculty of Mining and Geology, Department of Regional Geology, Belgrade, Serbia, dejan.bojic@nis.rs 2 NIS a.d., Scientific and technological center NTC NIS-Naftagas, Novi Sad, Serbia Stratigraphic and paleoenvironmental insights into the Miocene deposits of the southeastern Pannonian Basin, Serbia The Pannonian Basin System (PBS) experienced pro- co and Radivojević, 2012; BALAZS et al., 2021). In found paleogeographic and paleoecological trans- the subsequent Badenian, genuine marine conditions formations during the Miocene epoch. Despite were established, with fossil assemblages from these encompassing a relatively brief temporal span of ap- sediments indicating both shallow and deep marine proximately 15 million years, this period was marked environments. The uplift of the Carpathian Moun-by a series of transitions between continental, marine, tains disrupted the area’s connection to the sea (Ter brackish water, lacustrine, and once again continental Borgh et al., 2014) precipitating brackish water condi-environmental conditions. The primary objective of tions that had a discernible impact on the fossil record. this research endeavour is to elucidate the evolution As the Miocene progressed, salinity levels decreased, of Miocene sediments within the southeastern seg- giving rise to Caspian-brackish and freshwater condi-ment of the PBS, specifically encompassing the region tions during the Pannonian stage (Magyar et al., 1999), of Serbia. This investigation relies on both well data and water depth variations can be discerned through and seismic data to confront the intricate challenge of the analysis of mollusk and ostracod fossils (Magyar characterizing the diverse depositional environments and Geary, 2012). Mammal biostratigraphy, radiomet-that coexisted within the same chronological interval. ric dating, magnetic polarity profiles together with bi- The Early Miocene strata exhibit sparse fossil remains ostratigraphy of microplankton and molluscs are the and are predominantly characterized by continental tools by which the Lake Pannon biostratigraphic sys-river and lacustrine sediments. These sedimentary de- tem is connected to the global geochronological scale. posits exhibit non-uniform distribution throughout The delineation of these paleoenvironmental condi-the entirety of the Serbian sector within the Pannoni- tions carries substantial implications for a range of in-an Basin, displaying heterogeneous thickness. Lower dustries, including hydrocarbon extraction, coal min-Miocene sediments manifest maximal continuity and ing, and geothermal energy (Radivojević, 2023). Most thickness in the southern sector, encompassing the re- of the oil and gas production in the PBS is intricately gions of southern Banat and the Drmno Depression, linked to Miocene sediments, which serve as the prin-where their thickness reaches several hundred meters. cipal source, reservoir, and seal rocks. Moreover, fossil Conversely, in the northern Banat region, these sed- remnants not only offer insights into climate fluctua-iments are conspicuously absent. This distribution tions but also serve as valuable analogs for compre-aligns with the hypothesis of asymmetric simple shear- hending contemporary environmental dynamics. ing contributing to the formation of the PBS (Maten- 20 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References Balázs, A. et al. 2021. Global and Planetary Change 196, doi: https://doi.org/10.1016/j.gloplacha.2020.103386 Magyar, I. et al. 1999. Palaeogeography, Palaeoclimatology, Palaeoecology 147, doi: https://doi.org/10.1016/S0031-0182(98)00155-2 Magyar, I. et al. 2012. American Association of Petroleum Geologists 95, doi: https://doi. org/10.1306/13291392M953142 Matenco, L. C. 2012. Tectonics 31, doi: https://doi.org/10.1029/2012TC003206 Pavelić, D., Kovačić, M. 2018. Marine and Petroleum Geology 91, doi: https://doi.org/10.1016/j.marpetgeo.2018.01.026 Radivojević, D. 2023. Geoloski analai Balkanskoga poluostrva 84(2), doi: https://doi.org/10.2298/GABP230624008R Ter Borgh, M. et al. 2014. Palaeogeography, Palaeoclimatology, Palaeoecology 412, doi: https://doi.org/10.1016/j. palaeo.2014.07.016 21 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Stjepan Ćorić 1, Felix Hofmayer 1, Beatriz Hadler Boggiani 2,3, Rohit Soman 2,4, Juan David Andrade 2,5, Bettina Reichenbacher 2 1 Department of Geological Mapping, GeoSphere Austria, Wien, Austria, stjepan.coric@geosphere.at 2 Department of Earth and Environmental Sciences, Ludwig-Maximilians-Universität München, Munich, Germany 3 Faculty of Science, School of Geosciences, The University of Sydney, Sidney, Australia 4 School of Geography, Earth and Atmospheric Sciences, The University of Melbourne, Victoria, Australia 5 CNRS, Université de Lille, Lille, France An integrative paleoenvironmental and chronostratigraphic study of the Neuhofen Formation (Lower Miocene, Germany, Central Paratethys) Uncertainties in relation to chronostratigraphic corre- stand at 17.85 Ma had an impact on the environment lations have limited our understanding of the possible of the NH Fm. Furthermore, transition from eutroph-impact of global-scale climate signals on the epiconti- ic, open marine to mesotrophic, shallow marine con-nental sediments of the North Alpine Foreland Basin. ditions at Mitterdorf coincides with minima in orbital In an effort to resolve the problem, we have carried out eccentricity and global carbon isotope values at 17.67 a detailed paleoenvironmental and chronostratigraphic Ma. Our results are summarized in paleoenvironmental study of an 18 m thick section of the marine, Ottnan- models of three time-points within the middle Burdigian (middle Burdigalian) Neuhofen Formation at Mit- galian in the North Alpine Foreland Basin. terdorf, SE Germany (Fig. 1) (Hofmayer et al., 2023). Based on section logging, sampling of microfossils and nannoplankton, and analyses of stable oxygen and carbon isotopes, we demonstrate that significant environmental changes took place during the depo- sition of the Neuhofen Formation at Mitterdorf. In particular, the presence of nannoplankton zones NN3 and NN4 necessitated a re-interpretation of existing magnetostratigraphic data from Mitterdorf. To deter- mine whether the observed environmental changes can be placed in a supra-regional and global context, a new chronostratigraphic framework was established for the study area using a multi-proxy approach based on 3-D modeling, litho-, bio-, and magnetostratigra- phy, literature data and statistical analyses of new and 22 previously published microfossil data. The results re- veal that the Mitterdorf section can be correlated with polarity chrons C5Dr.2r and C5Dr.1n and that its age is 17.78–17.65 (vs. 17.65–17.50 Ma or 17.95–17.85 Ma in earlier works). Furthermore, the results show that the deposition of the entire Neuhofen Formation took place during the interval from 18.1 to 17.6 Ma, and that most of the accompanying environmental changes did not occur isochronously across its range. Nevertheless, comparison of literature-based global datasets with Presentations our new data indicates that the 3rd order sea level high- th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Figure: (A) Location of the North Alpine Foreland Basin (NAFB) in Central Europe. (B) Location of the study 23 site Mitterdorf (M) and schematic depiction of the paleoenvironment of the NAFB during the Burdigalian (c. 18 Ma) (A, borehole Altdorf; O, outcrop Ottnang Schanze (C) Overview of the claypit Mitterdorf and the studied subsections A–I. (D) Close-up of subsection A showing a clear bedding plane (arrow) (Hofmayer et al., 2023). References Hofmayer, F. et al. 2023. Palaeogeography, Palaeoclimatology, Palaeoecology 627, doi: https://doi.org/10.1016/j. palaeo.2023.111719 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe 1Katica Drobne, 2Oleg Mandic, 2Anna Weinmann, 3Elena Zakrevskaja, 4P.A. Fokin, 5Vlasta Ćosović, 1Tim Cifer, 6Anton Praprotnik, 7Alenka Mauko Pranjić 1 Ivan Rakovec Institute of Paleontology, ZRC SAZU, Ljubljana, Slovenia, katica.drobne@zrc-sazu.si, 2 Natural History Museum, Vienna 3 Vernadsky State Geological Museum, Moscow, Russia 4 Geological Faculty, Lomonosov Moscow State University, Moscow, Russia 5 Department of Geology, Faculty of Science, University of Zagreb, Zagreb, Croatia 6 Pod topoli 38, 1000 Ljubljana, Slovenia 7 Zavod za gradbeništvo, Ljubljana, Slovenia Genus Sphaerogypsina, Miocene type species from the Vienna Basin and its ancestors and descendants When Reuss (1848) published a monograph on fos- A special feature that is noticeable in this selection is sils from the Miocene sediments of the Vienna Basin the Eocene representatives that are all spherical with (Nussdorf type locality), he described a small chess- a precise position of the embryonic apparatus in the board-like structure as Ceriopora globulus. Since then, centre. In the middle, juvenile chambers of larger di-numerous findings of these skeletal forms have been mensions than younger ones, as well as smaller cham-published. Untill 1998 (Pignatti, 1998) 128 papers have berlets in the adult and gerontological stage can be been registered. The holotype (No 16) of Sphaerogypsina seen. The exceptionally low cycles of growth of the globulus, renamed by Golloway in 1933, is in a collection orbitoidal style form the basis for the new genus of of the Geological and Paleontological Department of Orbitogypsina globulus Matsumaru, 1996 (No 3, 4, 6 and the Natural History Museum, Vienna. The type local- probably also 7, 8). The classical internal structure of ity coordinates are 48.262042 N, 16.349341 E. The Sphaerogypsina globulus with a juvenile centre and transi-marine Badenian comprises coralline algal limestone, tion to a cyclical stage of growth is shown in the sam-common benthic foraminifera (Papp et al. 1970) and ple from Ravna gora (No 14). Stacks touch each other an ecostratigraphic zonation, now known as the mid- in a zig-zag radial direction (No 14, 19). Evidence of dle and late Badenian transgressive cycle (Siedl et al. growth of the chamberlets of the last cycle over the 2020, Jamrich et al. 2024). At the Badenian/Sarmatian previous one is the uneven surface of the shell with a transition the species becomes extinct in the Paratethys special chessboard-like pattern (No 3, 13, 22, 27, 28, (Cicha et al. 1998). 30) with large chamberlets and No 16, 23 with small The distribution of this genus extends in age from the ones (marked by circle). These differences could be Eocene – Pliocene until recent times and geographical- sufficient to name a new species with necessary analy-ly from the Carribean Sea, across the Mediterranean to sis of the internal structure (Drobne et al. 2014, 2017). the Pannonian Basin and to Romania, Greece, Turkey, For future research we need a large number of isolated Armenia, Somalia to the Indo-Pacific region, including shells, distributed along the depths in a recent marine Japan (Matsumaru 1996, Hottinger et al. 1993). environment (No 31) and the utilisation of modern 3D 24 imaging, for example with Zeiss Micro XCT.400 (avail- In our studies we selected representative samples from able at ZAG, Ljubljana). the oldest to the most recent in the region of the Te- thys and Paratethys (No 1-30). Of notable importance is the same magnification in all specimens for a clear interpretation of shells sizes (Figure). The oldest spe- cies (No 1–14) are larger than the youngest (No 20-30) but middle-sized shells also exist. A spherical shape is characteristic with an embryonic apparatus (marked in red) in the centre, which can adapt its relative position in hemi-spherical forms (No 17, 19, 20, 21, 26). Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Figure: Sphaerogypsina from the Vienna Basin and its ancestors and descendants. References Cicha, I. et al. 1998. https://books.google.si/books/about/Oligocene_Miocene_Foraminifera_of_the_Ce.html?id=0Zk7AAAACAAJ&redir_esc=y 549, 325 pp. Drobne, K. et al. 2014. https://www.researchgate.net/publication/271731177_Sphaerogypsina_globulus_sensu_lato_ Reuss_1848_recent_and_fossil_in_MicroXCT_400XRadia-ZEISS_tomography_and_films 25 Drobne, K. et al. 2017. https://iris.unige.it/retrieve/e268c4cb-87b3-a6b7-e053-3a05fe0adea1/EGU2017-17042.pdf Hottinger, L., Halicz, E., Reiss, Z. 1993. Dela SAZU, https://searchworks-lb.stanford.edu/view/2861937 Jamrich, M. et al. 2024. Facies 70, https://doi.org/10.1007/s10347-023-00679-2. Matsumaru, S. 1996. Oaleontological Society of Japan Special Publication 36, https://books.google.si/books/ about/Tertiary_larger_Foraminifera_Foraminifer.html?id=zc9IxAEACAAJ&redir_esc=y Papp, A. et al. 1970. https://books.google.si/books/about/F%C3%BChrer_zur_Paratethys_Exkursion_1970_in.ht-ml?id=n1I2vQEACAAJ&redir_esc=y Pignatti, J. 1998. https://books.google.si/books/about/Paleogene_Shallow_Benthos_of_the_Tethys.html?id=oR-1SAQAAIAAJ&redir_esc=y Siedl, W. et al. 2020. Revised Badenian (middle Miocene) depositional systems of the Austrian Vienna Basin based on a new sequence stratigraphic framework. Austrian Journal of Earth Sciences 113(1), doi: 10.17738/ajes.2020.0006 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Karmen Fio Firi1, Frane Marković1, Marijan Kovačić1, Morana Hernitz Kučenjak2, Stjepan Ćorić3, Đurđica Pezelj1, Jorge E. Spangenberg4 1 University of Zagreb, Faculty of Science, Department of Geology, Horvatovac 102b, HR-10 000 Zagreb, Croatia, karmen.fio@geol.pmf.unizg.hr 2 INA – Industrija nafte d.d., Exploration and Production Laboratory, Lovinčićeva 4, HR-10 002 Zagreb, Croatia 3 GeoSphere Austria, Neulinggasse 38, 1030 Vienna, Austria 4 University of Lausanne, Institute of Earth Sciences, Building Geopolis, CH-1015 Lausanne, Switzerland Paratethys sea temperature evaluation based on oxygen isotope composition of Badenian foraminifera; Nježić locality (North Croatian Basin, Croatia) During the most part of the Badenian (Middle Mio- fluence the initial values and result in lower d18O val-cene), the Paratethys sea covered the North Croatian ues. The suggested paleotemperatures are calculated Basin (NCB), situated in the SW part of the Pannoni- according to Bemis et al. (1998) for Globigerina bulloian Basin System. Badenian deposits crop out on the des, Spero et al. (2003) for Trilobatus trilobus specimens, southwestern slopes of the Papuk Mt. (SE part of whereas the equation from Shackleton and Kennet NCB, Slavonia Region). Within the 140 m long suc- (1975) was used for Lenticulina sp. to determine bot-cession at the Nježić locality, four lithofacies can be tom water temperatures. The analysed planktonic fo-distinguished: algal limestone, marl, bioclastic lime- raminifera from the lower part of the succession sug-stone and tuff. The age obtained by 40Ar/39Ar method gest temperatures ranging from 18 to 25°C and thus on volcanic glass in the lower part of the succession point to warm, even tropical conditions and possible is 14.40 ± 0.03 Ma. About 70 % of the sequence is stratification of the water column. Similar paleotem-composed of fossiliferous marls, rich in benthic and peratures were calculated for the Slovakian part of planktonic foraminifera and calcareous nannoplank- the Vienna Basin (Kováčová et al., 2009) and Czech ton, whose presence suggests that the studied section Republic (Scheiner et al., 2017). Temperatures higher belongs to the Lagenidae Zone, M5–M6 and NN5 than 25°C are not realistic and point to diageneticaly Zone of the late early to middle Badenian (Marković altered samples. The δ18O values from benthic fo-et al., 2021). From 18 selected samples, specimens of raminifera suggest 15 to 16.9°C in the lower, 14.3°C planktonic foraminifera Globigerina bulloides and Triloba- in the middle and 17.4°C in the upper part of the suc-tus trilobus, and benthic Lenticulina sp., were selected to cession, showing differences between the bottom and determine the stable isotope composition of carbon surface temperatures of ~4°C during the deposition (d13C) and oxygen (d18O). The δ18O value of ambient of the lower part of the studied succession. water in the Miocene is assumed to be 0 ‰ (Gonera Lower d13C values of Globigerina specimens sug-et al., 2000). The δ18Ocalcite (VPDB) signal of T. tri- gest increased productivity in surface water (Loubère, lobus ranges between −6.24 and −1.06 ‰, and d13C 1996), while common positive d13C values of Trilobatus 26 from –0.62 to 1.53 ‰. For G. bulloides δ18O ranges probably result from symbiotic activity. The presence from −6.44 to −1.19 ‰ and δ13C from –1.47 to 1.23 of symbionts might have caused lower carbon isotope ‰. The δ18Ocalcite (VPDB) signal of Lenticulina sp. ratios, enabling us to conclude that surface tempera-ranges from –0.12 to 0.60 ‰, and d13C from –0.03 tures were probably lower than 25°C to 0.79 ‰. The δ18O values of fossil foraminifera enables recon- structions of the sea temperatures and paleoclimate, even though ecological factors, as well as diagenetic processes – due to burial and recrystallisation can in- Presentations This study was supported by the Croatian Science Foundation, Project SEDBAS, IP-2019-04-7042. th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References Bemis, B.E. et al. 1998. Paleoceanography and Paleoclimatology 13(2), doi: http://dx.doi.org/10.1029/98PA00070 Gonera, M. et al. 2000. Terra Nova 12(5), doi: https://doi.org/10.1046/j.1365-3121.2000.00303.x Kováčová, P. et al. 2009. International Journal of Earth Sciences 98(5), doi: http://dx.doi.org/10.1007/s00531-008-0307-2 Loubère, P. 1996. Marine Micropaleontology 28(3), doi: https://doi.org/10.1016/0377-8398(96)00004-7 Marković, F. et al. 2021. Geologia Croatica 74(3), doi: http://dx.doi.org/10.4154/gc.2021.18 Shackleton, N.J., Kennett, J.P. 1975. Initial reports of the deep sea drilling project 29, http://deepseadrilling.org/29/ volume/dsdp29_20.pdf Scheiner, F. et al. 2018. Palaeogeography, Palaeoclimatology, Palaeoecology, 495, doi: https://doi.org/10.1016/j. palaeo.2017.12.027 Spero, H.J. et al. 2003. Paleoceanography and Paleoclimatology 18(1), doi: http://dx.doi.org/10.1029/2002PA000814 27 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Vladislav Gajić, Ivan Dulić, Janko Sovilj, Goran Bogićević, Irina Savić STC NIS-Naftagas, Center for Regional Geology, Novi Sad, Serbia, vladislav.gajic@nis.rs Integrated sedimentological, well log, seismic and palynological data of Upper Miocene sediments in the Northern Banat, Serbia On the basis of regional Neogene column of Upper acteristics of drilled rocks, in order to group them into Miocene deposits in the southeastern part of the Pan- clusters or electro facies. Considering that the seismic nonian Basin can be separated into three sedimentary data is also a reflection of certain changes in the phys-and tectonic cycles (Horvath et al., 2015). The first cy- ical characteristics of the rocks, the cluster analysis in cle is represented by deep-water marlstones, claystones combination with seismic facies maps, represents an and sandstone turibidites of the regional Endrod and excellent input parameter for the formation of the Szolnok formations. Above them, the second cycle initial 3D lithofacies model. The goal of this analysis sediments are deposited in a delta plain environment was to create seismic facies maps which will, combined which is represented by clastic and marly deposits with lithotype analysis results, fill the petroleum sys-of the progradational series of the Algyo formation tem model with data on lithologies and their spatial (Magyar et al., 2013). Finally, above this progradational distribution. After calibration, the final lithology facies series, there are sedimentary deposits of shallow wa- maps are obtained. ter, transitional and terrestrial environments of the Uj- Multi-disciplinary research also included the palyno-falu formation. logical and sedimentological analysis of the Algyo The primary goal of this research was to confirm the and Ujfalu formations. Sedimentological research indirection of progradations and isolate sedimentary cluded analysis of the sedimentary bodies that were bodies of Upper Miocene with different lithological separated by using interpreted horizons and seismic characteristics. The main challenge during this process attributes. The examined segment of the sedimentary was the geological characterization of seismic data, series stratigraphically belongs to the Upper Miocene which is usually in a time domain and has a vertical - Pliocene (second and third cycle deposits). Using resolution significantly lower than well data. Detailed two seismic attributes, “mean amplitude” and “RMS lithological analysis of the wells was done using the amplitude” it was possible to define some of the sedi-method of cluster (lithotype) analysis of well logs. mentary bodies in this environment and confirm their Cluster analysis of well logs is based on the recogni- characteristics based on the lithotype analysis results. tion of similarities or differences in the physical char- 28 References Magyar, I. et al. 2013. Global and Planetary Change 103, doi: https://doi.org/10.1016/j.gloplacha.2012.06.007 Presentations Horváth, F. et al. 2015. Geothermics 53, doi: https://doi.org/10.1016/j.geothermics.2014.07.009 th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Ines Galović 1, Vlasta Premec Fućek 2, Valentina Hajek-Tadesse 1, Tomislav Kurečić 1, Anita Grizelj 1, Krešimir Petrinjak 1 1 Department of Geology, Croatian Geological Survey, Sachsova 2, 10000 Zagreb, Croatia, ingalovic@hgi-cgs.hr 2 E&P Laboratory, INA-industrija Nafte d.d, Lovinčićeva 4, 10000 Zagreb, Croatia How, when and where did the first „mid-Miocene“ marine transgression, happen in the Paratethys?; a case study from the North Croatian Basin Until recently, it has generally been thought that the ed with the opening of the known Slovenian marine first mid-Miocene transgression started in the Central corridor (Ivančić et al., 2018) at 16.057 Ma and now Paratethys in the mid-Badenian calcareous nanno- with the Arabian corridor, based on top common Hel-plankton Zone NN5 (Martini, 1971), i.e., foraminiferal icosphaera ampliamperta and appearance of Helicosphaeta Subzone MMi5b (Lirer et al., 2019) that belongs to TB mediterranea respectively, where the latter only occurs 2.4 sea-level cycle (Kovač et al., 2018). Now, the ne- in the Indian Ocean in NN4b Subzone (16.1 Ma) of glected previous data of studied sections Tisovac and Burdigalian (Okada, 1990). This is in accords with the Ivan Dol by Kopecká et al. (2022) amended with recent intensified tectonic extension, and broader climate and past data from the North Croatia basin and broad- instability connected with the Mi2 event, during the er has been incorporated to elucidate the beginning of late Karpatian. In addition, the Karpatian/Badenian the “mid-Miocene” transgression in the region. The boundary in Tisovac is set up based on the cold-water usage of some bioevents in the Paratethys, such as fo- to temperate form shift of C. pelagicus, which is orbital raminifera Praeorbulina circularis first occurrence (FO), in origin and in accord with cooler climate that prevails should be abandoned because it falls within the gaps in in the late Karpatian, while it is warmer in the Badeni-the Mediteranean (Iaccarino et al. 2011), while the ne- an. Marginal seas are more affected by change, which glected Miller et al. (1991) globally astronomically cal- is the cause of regional bioevents. Because of an open ibrated FO of Orbulina suturalis (15.2 Ma) to the base gateway between the Mediterranean and Indian Ocean of C5Bn in the North Atlantic is amended herein. in the late Karpatian, they are, in this particular inter-For the first time, the first marine transgression, that val, closer to global bioevents that usually thought. belongs to TB2.3 sea-level cycle, has been connect- The presented research was conducted in the scope of the internal research project „RAMPA“ at the Croatian Geological Survey, funded by the National Recovery and Resilience Plan 2021–2026 of the European Union – NextGenerationEU, and monitored by the Ministry of Science and Education of the Republic of Croatia. 29 References Iaccarino, S.M. et al. 2011. Stratigraphy 8, doi: http://dx.doi.org/10.29041/strat.08.2.08 Ivančić, K. et al. 2018. Geologica Carpathica 69, doi: http://dx.doi.org/10.1515/geoca-2018-0031 Kopecká, J. et al. 2022. Global and Planetary Change 211, doi: https://doi.org/10.1016/j.gloplacha.2022.103784 Kováč, M. et al. 2018. Geologica Carpathica 69(3), doi: http://dx.doi.org/10.1515/geoca-2018-0017 Lirer, F. et al. 2019. Earth-Science Reviews 196, doi: https://doi.org/10.1016/j.earscirev.2019.05.013 Martini, E. 1971. Proceedings Second Planktonic Conference, Roma Müller, C. 1979. Géologie Méditerranéenne 6, https://www.persee.fr/doc/geolm_0397-2844_1979_num_6_1_1082 Okada, H. 1990. Proceedings of the Ocean Drilling Program, Scientific Results 115 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Rok Gašparič1,2, Tomáš Kočí1, Martina Kočová Veselská 1, Tomaž Hitij1,4 1 Institute for Palaeobiology and Evolution, Kamnik, Slovenia, rok.gasparic@gmail.com 2 Oertijdmuseum, Boxtel, the Netherlands 3 Earth & Oceanic Systems Group, RMIT University, Melbourne, Australia 4 University of Ljubljana, Faculty of Medicine, Ljubljana, Slovenia Cidaroids (Echinoidea, Cidaroida): pioneers in benthic ecosystem engineering Access and competition for hard substrate is a critical locally abundant, and with their large primary spines factor in the distribution and diversity of organisms, and low capacity for locomotion provide suitable sites especially in deep-water benthic environments. In this for attachment for sessile species. An important trait context, we present a unique association of grypheid of the shaft of cidaroid spines, enabling the ectocom-oysters Neopycnodonte navicularis Brocchi 1814 settling mensals that attach to the primary spines of cidaroids on the spines of echinoid Stylocidaris polyacantha (Reuss, and live among them is, that unlike in other echinoids, 1860), from Middle Miocene (Badenian) mudstones they are not covered by an epithelium and lack an-of Šentilj in northeastern Slovenia. The sediments are ti-fouling mechanisms (Märkel and Röser 1983), thus interpreted as having been deposited in a rather calm allowing unrestricted attachment. environment of a muddy deep lagoon (> 30 m) be- Therefore, potential Neopycnodonte reefs, starting by set-hind a protecting coral reef. tling on cidaroid echinoids, would represent a hotspot Oysters are important ecosystem engineers, with a of biodiversity, surrounded by a soft sediment bottom. tendency to aggregate in large numbers creating bio- Research of benthic fauna of the Antarctic deep sea constructions that can reach significant lateral and (Hétérier et al., 2008) confirms the importance of ci-vertical dimensions, from banks, up to reefs (Angeletti daroids as primary ecosystem engineers of benthic and Taviani, 2020). In present day Mediterranean, the communities. Their analyses of species distribution main reef-builders are oysters from the family Ostrei- suggests that the cidaroids are a favoured habitat for dae (Ostrea edulis Linnaeus, 1758), constructing reefs sessile organisms, compared to nearby rocks, but are at intertidal and shallow (0 - 20 m) depths (Walles et colonized by relatively specialized sessile species, leav-al., 2015). Gryphaeidae are also known to produce bio- ing the unfavourable rock habitat to more generalist constructions, but in deeper water (30 - 300 m), and species. This can be explained by the fact, that most of this was the case also in the past, since at least the Mid- the epibionts are filter-feeding organisms that need to dle Miocene e.g. Neopycnodonte navicularis (Dominici et be in the water flow to survive. Unlike to the cidaroids, al., 2019). It is well documented, that grypheid oyster rocks can sink into and become covered with mud, reefs serve as habitat refuge for many organisms like while cidaroid spines offer a permanent position in the decapods, molluscs, polychaetes among invertebrates, water column. Similar prevention from burial has and a wide variety of fishes among vertebrates. been shown to be one of the major benefits of symbi- However, as research (Angeletti and Taviani, 2020) onts of hermit crabs (Williams & McDermott 2004). 30 shows, even oysters have a hard time settling on the To conclude, the unique association of grypheid oys-deep-sea bottom, covered exclusively with soft sedi- ters attached to the cidaroid spines suggests that the ments, consisting of mud derived from the decompo- presence of cidaroids in the Middle Miocene of the sition of pelagic organisms. They need hard mineral Paratethys increased benthic biodiversity by providing substrate, in form of allochtonous rock fragments or, as attachment sites for ectosymbionts. It supports the hy-demonstrated here, other biotic substrates, such as shells. pothesis that cidaroids have been a key species of the Ectosymbiosis is commonly observed in extant marine benthic soft bottom ecosystems, facilitating the settle-ecosystems, as well as documented in past ecosystems ment of many others. (Williams and McDermott, 2004). Among biotic sub- strates a clade of echinoids, the Cidaroida, appears to Presentations be especially suitable for ectosymbiosis. They can be th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Figure: A - Stylocidaris polyacantha, aboral view; B - Stylocidaris polyacanth a, oral view; C - Stylocidaris polyacantha, primary spine; D - Stylocidaris polyacantha, primary spine; E–H - Neopycnodonte navicularis attached to primary spine of Stylocidaris polyacantha. Scale bars are 10 mm. 31 References Angeletti, L., Taviani, M. 2020. Diversity 12, doi: https://doi.org/10.3390/d12030092 Dominici, S. et al. 2019. Palaeogeography, Palaeoclimatology, Palaeoecology 527, doi: https://doi.org/10.1016/j. palaeo.2019.04.024 Hétérier, V. et al. 2008. Marine Ecology Progress Series 364, doi: https://doi.org/10.3354/meps07487 Märkel, K., Röser, U. 1983. Eucidaris tribuloïdes. Zoomorphology 103, doi: https://doi.org/10.1007/BF00312057 Walles, B. et al. 2015. Estuaries Coasts 38, doi: https://doi.org/10.1007/s12237-014-9860-z Williams, J.D., McDermott, J.J. 2004. Journal of Experimental Marine Biology and Ecology 305, doi: https://doi. org/10.1016/j.jembe.2004.02.020 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Rok Gašparič1,2, Tomáš Kočí1, Martina Kočová Veselská 1, Tomaž Hitij1,4 1 Institute for Palaeobiology and Evolution, Kamnik, Slovenia, rok.gasparic@gmail.com 2 Oertijdmuseum, Boxtel, the Netherlands 3 Earth & Oceanic Systems Group, RMIT University, Melbourne, Australia 4 University of Ljubljana, Faculty of Medicine, Ljubljana, Slovenia Coral-dwelling barnacles (Cirripedia, Pyrgomatidae) from the Neogene of Slovenia Coral-dwelling barnacles (Pyrgomatidae) are obligate ed to colonial hermatypic corals, e.g. Tarbellastrea. symbionts of scleractinian corals. Their external calci- In the Badenian, during the Middle Miocene Cli-fied shell is located at the same level as the coral sur- mate Optimum, tropical coral reefs extended into the face, and the coral tissue often grows over the barnacle. Central Paratethys for the only time in the Neogene. The family Pyrgomatidae is divided into three subfam- These are low diversity coral reef ecosystems (usually ilies: Ceratoconchinae, Megatrematinae, and Pyrgo- less than 5 genera) with characteristicaly low frame-matinae (Chan et al. 2021). Extant Pyrgomatidae have work-building capacity. Non-framework forming coral a cosmopolitan distribution in tropical to temperate communities and coral carpets dominated while coral regions. Pyrgomatinae are Indo-Pacific, Megatremat- patch reefs formed just briefly and in geographically inae and Ceratoconchitinae are distributed mostly in restricted areas sheltered from siliciclastic input (Riegl the Atlantic Ocean (Simon-Blecher et al. 2007). and Piller, 2000). The base of coral barnacles is cup-shaped and embed- Herein we present for the first time new records of ded in the skeleton of the host coral. The base bears pyrgomatids from the Middle Miocene of northeast-concentric growth lines and longitudinal ribs which ern Slovenia. The specimens were recovered from bi-correspond to the internal ribs of the compartments. ostromal coral facies within lithothamnium limestones Some extant Pyrgoma have perforations in their bas- in localities Duplek, Šentilj and Ciringa. Some of the es that allow chemical and metabolic communication pyrgomatid specimens are preserved associated within between the host coral and the barnacle (Ross and host corals and some are isolated within the matrix. Newman 1973, Ross and Newman 2002, Chan et al. Regardless, six different species of scleractinian corals 2013, Yap et al. 2023). Most pyrgomatids have flat have been described from these localities: Favia melitae discoidal or elliptical-shaped shells. Barnacles that do (Chevalier, 1961), F. macdonaldi Vaughan, 1919, Solenas-not symbiotically inhabit corals commonly possess six traea hyades (Dana, 1846), Tarbellastraea russoi Bosellini, compartmental plates, whereas pyrgomatids ( e.g. Cera- 1996, T. aquitaniensis Chevalier, 1961, and Mussismilia toconcha) have four compartments: a rostrum (with two vindoboniensis Chevalier, 1961 (Baron-Szabo, 1997) radii), two carino-latera (with one radius and an ala), The investigated specimens of coral-dwelling barnacles and a carina (with two ala). Shells of Pyrgomina can include the Ceratoconchinae with four compartments: even be fused into a single plate. The orifice, located in Ceratoconcha sp. 1 (RGA2481, RGA2485, RGA2489, the central part of the shell, is where microscopic food RGA5907, RGA6848), Ceratoconcha? krambergeri particles are captured, it is opened and closed by a pair 32 (RGA2482) some of the latter possessing original of opercular plates (scuta and terga). These opercular coloration, Ceratoconcha? darwiniana (RGA2490), plates are either of the “balanoid type” as seen in Cera- Ceratoconcha? sturi (RGA2486, RGA5907); and the toconcha or highly modified as in Pyrgoma. Megatrematinae with a single fused shell: Pyrgomina? The fossil record of the family dates back at least to costata (RGA2379, RGA2381). Presented specimens, the Early Miocene (Santos et al. 2012). Fossil cerato- sometimes found associated with the coral Solenas-conchids were common in the Paratethys, Mediter- trea? hyades, are referred to as Ceratoconcha and Pyr-ranean Sea, and Atlantic Ocean during the Neogene gomina with some caution, as opercular plates have (Baluk and Radwanski 1967, Baarli et al. 2017, Gale not yet been recorded. These pyrgomatids represent et al. 2021). Ceratoconcha reached its greatest diversity the first known coral-inhabiting barnacles from Slove-in the Paratethys in the mid and early Late Miocene nia and fill in a gap in the geographical distribution of Presentations (Baarli et al. 2017) and its occurrence has been restrict- the family in the Paratethys during the Miocene. th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Figure: Pyrgomatidae from NE Slovenia: A - Pyrgomina cf. costata; B - Ceratoconcha sp.; C - Ceratoconcha cf. sturi?; D - Ceratoconcha sp.; E - Ceratoconcha sp.; F - Ceratoconcha sp.; G - Ceratoconcha? sturi; H – Ceratoconcha cf. krambergeri. Scale bars are 5 mm. References Baron-Szabo R.C. 1997. Razprave IV. razreda SAZU 5 Baluk W., Radwanski A. 1967. Acta Palaeontologica Polonica 12(4), https://www.app.pan.pl/archive/published/ app12/app12-457.pdf Baarli B. et al. 2017. Palaeogeography, Palaeoclimatology, Palaeoecology 468, doi: https://doi.org/10.1016/j.palaeo.2016.12.046 Chan B.K.K. et al. 2013. Biodiversity Research Center, Academia Sinica, doi: http://dx.doi. org/10.13140/2.1.1043.7921 Chan B.K.K. et al. 2021. Zoological Journal of the Linnean Society 193, doi: https://doi.org/10.1093/zoolinnean/ 33 zlaa160 Gale A.S. et al. 2021. Cainozoic Research 21(1), https://natuurtijdschriften.nl/pub/1019585/CR2021021001001.pdf Riegl B., Piller W.E. 2000. Palaios 15, doi: http://dx.doi.org/10.2307/3515512 Ross A., Newman W.A. 1973. San Diego Society of Natural History 17(12), https://www.researchgate.net/publication/284490645_Revision_of_the_coral-inhabiting_barnacles_Cirripedia_Balanidae Ross A., Newman W.A. 2002. Proceedings 9th International Coral Reef Symposium 1, Bali, Indonesia Santos A. et al. Palaeontology 55, doi: http://dx.doi.org/10.1111/j.1475-4983.2011.01105.x Simon-Blecher N. et al. 2007. Molecular Phylogenetics and Evolution 44(3), doi: https://doi.org/10.1016/j. ympev.2007.03.026 Yap, F.C. et al. 2023. Scientific Reports 13, doi: https://doi.org/10.1038/s41598-023-33738-3 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Holger Gebhardt, Stjepan Ćorić GeoSphere Austria, Vienna, Austria, holger.gebhardt@geosphere.at The Lower Miocene succession of the southern Waschberg Unit in Lower Austria The Waschberg–Ždánice Unit links the Alpine and Carpathian orogens. Its complex structural and sed- imentary structures lack a modern interpretation, particularly in the Austrian part. In recent years, the southern end of the Waschberg–Ždánice Unit (i.e., the Waschberg Unit) has been geologically mapped in detail. In this contribution, we present the occurring formations, their fossil and sedimentological invento- ry and peculiarities, and the structural deductions. The Waschberg Unit comprises the Michelstätten Forma- tion (marlstone, late Egerian to early Eggenburgian, NP25 to NN2, N4b to N5) and the Ždánice-Hus- topeče Formation (marlstone, sandstone, claystone, Egerian to Eggenburgian, upper NN2 to NN3, N5 to N6) which forms the vast majority of the rocks. Envel- oped in the Ždánice-Hustopeče Formation are boul- der beds and several olistoliths of various age, com- position and size. These include the “Blocky Layers” with various crystalline components, Flysch-boulders, sands and marls with boulders up to 5 meters in diame- ter. These sediments are interpreted as debrites and are often associated with turbidites. Other large olistoliths comprises Lutetian and Priabonian marlstones and limestones. Most prominent are km-sized giant-olisto- liths of Ypresian to basal Lutetian “Waschberg-Lime- stone” that glided into the depositional basin. In front of a thrust fault, Ottnangian limonitic clays and sands where thrusted and folded (Křepice Formation). The marine Karpatian Laa Formation was deposited in the Alpine-Carpathian Foredeep and became overthursted by the Waschberg–Ždánice Unit. Based on foraminife- ral and nannoplankton data as well as sedimentological descriptions and structures, we reconstruct the depo- 34 sitional environments and describe the processes that formed this part of the Alpine-Carpathian orogeny. The mapping activity resulted in modern geological map sheets that were recently published. References Gebhardt, H., Ćorić, S. 2023. GeoSphere Austria, Wien, doi: https://doi.org/10.24341/tethys.224. Gebhardt, H. & Ćorić, S. (2023): Geologische Karte der Republik Österreich, Blatt Hollabrunn Südost 1:25.000, Geo-Presentations Sphere Austria, Wien, https://doi.org/10.24341/tethys.224. th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Marcin Górka1, Jakub Březina2, Milan Chroust3, Rafał Kowalski4, Sergi López-Torres5, Mateusz Tałanda5 1 Department of Sedimentary Basins, Faculty of Geology, University of Warsaw, Warsaw, Poland, magurka@uw.edu.pl 2 Department of Geology and Paleontology, Moravian Museum, Brno, Czechia 3 Institute of Paleobiology, Polish Academy of Sciences, Warsaw, Poland 4 Polish Academy of Sciences Museum of the Earth, Warsaw, Poland 5 Institute of Evolutionary Biology, Faculty of Biology, University of Warsaw, Warsaw, Poland New data on Miocene crocodylians from the Fore-Carpathian Basin and its foreland In Central Europe, the Middle Miocene Climatic Opti- The present report reappraises some previous croc-mum was surprisingly distinct, partially due to favoura- odylian fossil record from FCB and describes a new ble paleogeographic conditions – the connection with important occurrence. The morphological features of the Indo-Pacific bioprovince enabled circulation of this material point towards its ascription to the genus marine waters that bolstered a subtropical climate, evi- Diplocynodon. denced by both rich marine faunal assemblages of In- 1. A tooth from the Lower Badenian of Židlochov-do-Pacific affinities and thermophilic terrestrial faunas. ice (Czechia) from Anton Rzehak’s personal col- During this timespan, two crocodylian genera inhabi- lection, housed at the Paleontological collection tated Central Europe: Gavialosuchus (often referred to of the Department of Geological Sciences, Fac- as Tomistoma) – a marine long-snouted tomistomine ulty of Science, Masaryk University, Brno (ÚGV with a body length of ca. 5 m, and Diplocynodon – a E1093). The specimen was correctly catalogued basal endemic alligatoroid, predominantly freshwater, by Rzehak as a crocodylian tooth, but it was never with a body length of ca. 1.5 m. formally reported in any of his numerous works. Crocodylian remains from the Miocene of the Central 2. A tooth from the Lower Badenian of Pińczów (Po-Paratethys have been usually referred to as Diplocynodon, land) collected by Andrzej Radwański, housed at Gavialosuchus or left undetermined. They have been re- the Museum of the Faculty of Geology, University corded in the Korneuburg and Vienna Basins, Zsámbék of Warsaw (MWGUW/ZI/113/067). This tooth Basin, Styrian and Fohnsdorf Basins, and Pannonian was previously attributed to Tomistoma (Antunes in Basin. They are also known from adjoining land areas Młynarski 1984); here reassigned to Diplocynodon. in Bosnia-Herzegovina (Böhme and Ilg 2003). 3. A dorsal osteoderm from the upper Karpa- In the southwestern Fore-Carpathian Basin (FCB), tian-?Lower Badenian freshwater deposits of the crocodylians were reported from the Ottnangian of Szczerców mining field (Poland) that was collect- South Moravia in Czechia (Rzehak 1912) and from ed by our prospecting team (M.G., R.K, S.L.-T.) in Lower Austria (the holotype skull of Gavialosuchus June 2023 during reconnaissance fieldwork in the eggenburgensis). The crocodylians in the Polish part of Bełchatów lignite mine. The specimen is housed FCB are extremely scarce – one tooth is known from at the Museum of the Faculty of Geology, Uni- 35 the Lower Badenian of Pińczów. Occurrences in ad- versity of Warsaw (MWGUW/ZI/113/064). The joining land areas are limited exclusively to the Burdi- latitude of the finding spot (51°14’00.0”N) makes galian of Most Basin (NW Czechia), where Diplocyno- this specimen the world’s northernmost occur- don ratelli was reported (Chroust et al. 2021). rence of a crocodylian in the last 23 Myr (i.e., from the Neogene to the present). Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Figure: A – A generalized paleogeography of the Paratethys in late Early Miocene-early Mid- dle Miocene time with northernmost Eu- ropean occurrences of crocodylians within the Thanetian to Langhian timespan. B – Recorded crocodylian-bearing sites in Miocene of Central Paratethys (black cir- cles) with location of the discussed findings (asterisks). After: Rzehak 1912; Rögl and Steininger 1983; Młynarski 1984; Böhme and Ilg 2003; Kováčová et al. 2011. The reappraised Fore-Carpathian material puts into In conclusion, a reappraisal of the crocodylian mate-question the assumed exclusively freshwater lifestyle rial of FCB shows that all known records in this area of this Diplocynodon. Although the redeposition of belong to the genus Diplocynodon, suggesting that resistant crocodile teeth into littoral environment by this freshwater taxon may have ventured into marine floods or erosion is very plausible, a marine lifestyle (at environments as well. Finally, the crocodile osteoderm least partial) cannot be excluded. from Szczerców expands the known distribution of Between the Thanetian and the Langhian (i.e., for over Neogene crocodylians towards more northern lati-40 Myr), the northern limit of crocodylian distribution tudes. in Europe was situated at approx. present-day 51°N The project is funded by an Arthur James Boucot Re-parallel. However, the paleolatitude of the northern search Grant (Paleontological Society) to S.L.-T. and limit of the crocodylian distribution has been slowly an NCN grant (2022/47/B/ST10/02686) to M.T. increasing from ca. 42°N in the Thanetian to ca. 47°N 36 in the late Burdigalian/Langhian. References Böhme and Ilg 2003. https://www.fosfarbase.org/ (accessed 1.02.2024) Chroust, M. et al. 2021. Bulletin of Geosciences 96, doi: https://doi.org/10.3140/bull.geosci.1803 Młynarski, M. 1984. Acta Zoologica Cracoviensia 27(1) Kováč, M. et al. 2011. Geologica Carpathica 62, doi: http://dx.doi.org/10.2478/v10096-011-0037-4 Rögl, F., Steininger, F. 1983. Annalen des Naturhistorischen Museums in Wien 85/A, https://www.zobodat.at/pdf/ ANNA_85A_0135-0163.pdf Presentations Rzehak, A. 1912. Verhandlungen der Kaiserlich-Königlichen Geologischen Reichsanstalt 15 th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Anita Grizelj 1; Réka Lukács 2,3; Ivan Mišur 1 1 Croatian Geological Survay, Sachsova 2, 10000 Zagreb, Croatia, agrizelj@hgi-cgs.hr 2 Institute for Geological and Geochemical Research, HUN-REN Research Centre for Astronomy and Earth Sciences, Budapest, Budaörsi út 45, H-1112, Hungary 3 HUN-REN-ELTE Volcanology Research Group, Pázmány P. sétány 1/C, 1117 Budapest, Hungary Zircon U-Pb geochronology of Sarmatian bentonite from Hrvatsko Zagorje Basin (Croatia) A layer of bentonite up to 40 cm thick on the Sutla-II lithostratigraphic section was deposited between hori- zontally laminated marls in the area of the northwest- ern part of Hrvatski Zagorje Basin (i.e. southwestern marginal zone of the Pannonian Basin System). Based on the biostratigraphic records (i.e. foraminifera, os- tracods, calcareous nannofossils, palynology), it was concluded that the marls belong to the lower Sarma- tian (Grizelj et al., 2023). The main component of the bentonite is montmorillonite, while opal-CT, calcite and quartz occur in small amounts. Zircon, apatite and ilmenite appear as accessory minerals. Based on the chemical analysis of the bulk sample of benton- ite, it was determined that it was formed by intensive weathering of a felsic to medium-type volcanic ash (Grizelj et al., 2023). In addition, U-Pb zircon dating was performed using the LA-ICP-MS method. Zircon U-Pb dating indicates the age of the youngest age pop- ulation: 12.38+/-0.2 Ma (MSWD 1.5). This confirmed the biostratigraphic age of bentonite. The described occurrences of bentonite are associated with a distant volcanic eruption. Which eruption is the source of the deposited volcanic ash (altered bentonite) is the subject of further research. This research was conducted in the scope of the in- ternal research project “RAMPA” at the Croatian Ge- ological Survey, funded by the National Recovery and Resilience Plan 2021–2026 of the European Union – NextGenerationEU, and monitored by the Ministry of Science and Education of the Republic of Croatia. 37 References Grizelj, A. 2023. Geologica Carpathica 74(1), doi: https://doi.org/10.31577/GeolCarp.2023.02 Grizelj, A., Milošević, M., Miknić, M., Hajek Tadesse, V., Bakrač, K., Galović, I., Badurina, L., Kurečić, T., Wacha, L. & Šegvić, B. (2023): Evidence of Early Sarmatian volcanism in the Hrvatsko Zagorje Basin, Croatia - mineralogical, geochemical and biostratigraphic approach. Geologica Carpathica, 74 (1), 59-82, doi:10.31577/GeolCarp.2023.02. Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Tomaž Hitij 1,2 Jure Žalohar 1,3, Šoster Aleš 4, Matija Križnar 5, Gašparič Rok 1,6 1 Institute for Palaeobiology and Evolution, Kamnik, Slovenia, tomazhitij@gmail.com 2 University of Ljubljana, Faculty of Medicine, Ljubljana, Slovenia 3 T-TECTO, Kranj, Slovenia 4 University of Ljubljana, Faculty of Natural Sciences and Engineering, Ljubljana, Slovenia 5 Slovenian Museum of Natural History, Ljubljana, Slovenia 6 Oertijdmuseum, Boxtel, the Netherlands Early Miocene large land mammals from the Drtija sand pit near Moravče During the Burdigalian stage (late Ottnangian) of the discovered; a complete crown of the left lower M2 or Miocene, sea-level fall accentuated the beginning of M3, two unworn partial tooth crowns with mesial half isolation of the Paratethys from the Mediterranean Sea of the right lower molar, and a distal cusp of the lower (Harzhauser et al., 2007). Except for the Northern Al- right M3. pine Foreland Basin and its continuation into the Pol- Two teeth belong to even-toed ungulates of the genus ish foredeep, no real marine environments are known Hyotherium; a complete crown of right M1 and a mesial from the Carpathian–Pannonian–Dinaride domain, pillar of lower left M3. and brackish to fresh water sedimentary environments prevailed (Harzhauser et al., 2007). During the Mid- Additionally, remains of large mammals were also dis-dle to Late Burdigalian (Ottnangian/Karpatian), large covered. Two teeth specimens of rhinocerotid were deltas were present along the young Alps. Formations collected from the sand pit; a polished part of the derived from a fluviodeltaic system of flooding rivers buccal lamella of the lower premolar/molar, and an and alluvial fans can be found in several places in Cen- almost complete very worn right P4 which we assigned tral Slovenia; i.e. Besnica, Tunjice Hills, and Moravče. to the genus Brachypotherium. A rich assemblage of Early Miocene fossils was col- Mikuž and Pohar (2001) described an anterior part lected from an abandoned sand pit Drtija in the vicini- of left lower jaw with missing teeth belonging to ele-ty of Moravče, where quartz sandstone, conglomerate phant-like proboscidean of the genus Prodeinotherium. or gravel were extracted. Marine and lacustrine fauna Later, a fragment of the lower molar of Prodeinotherium is represented by bony fish ( Pagrus cinctus), sharks ( Cos- and also a completely preserved slightly worn crown mopolitodus hastalis and Carcharias sp.), eagle ray teeth of the right upper P3 was found. ( Aetobatis arcuatus and Myliobatis sp.) and turtles be- The presence of large mammals is important for esti-longing to Trionyx triungui s. Frequent finds are oncoids mating the age of these beds. Until the Early Miocene, which often formed around a central nucleus, in most the open Tethyan Seaway to a large extent hindered cases freshwater gastropods Brotia ( Tinnyea) eschery. land mammal migration between Africa and Eura-The remains of nearshore environments are mainly sia (Harhauser et al., 2007). The collision of the Af-represented by numerous occurrences of thick-shelled ro-Arabian plates with Eurasia during the mid-Burdi-oysters Crassostrea gryphoides that formed Crassos- galian caused the emergence of a terrestrial corridor trea-bioherms. Terrestrial ecosystems are defined by called the ‘‘Gomphotherium Landbridge’’, which allowed numerous fragments of fossil wood indicating the ex-38 a faunal exchange between Africa and Eurasia (Rögl, istence of mangrove habitats along the seashore. 1999). This and a warmer less seasonal climate ena- The most important finds in the Drtija sand pit are bled proboscideans from Africa to disperse towards the remains of Miocene land mammals. Isolated bone Western Europe in multiple migration events. The first fragments of large mammals, broken and fragmented arrivals in Europe were gomphotheres 17.3 Ma before during the transport a can be found. However, most present followed by deinotheres ( Prodeinotherium) 16.5 important finds are mammal teeth, which preserved Ma before present (Van der Made 1996). much better in this high-energy environment. Almost Based on the data above, the beds containing large all teeth are missing roots, and the enamel is polished, mammals in Drtija sand pit were deposited in the due to the water transport with the quartz gravel. Middle to Late Burdigalian, which corresponds to the Presentations Most of the collected teeth belong to small tragulid period from Ottnangian to Karpatian in the Central ruminants of the genus Dorcatherium. Four teeth were Paratethys. th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Figure: (A) Paleogeographic reconstruction of the Mediterranean and Central Paratethys in the Lower Miocene. Simplified after Rögl, 1999. The location of Drtija is marked with the red dot and ‘’Gomphotherium Landbridge’’ with an asterix. (B) Prodeinotherium tooth in situ. (C) Teeth belonging to (1) Dorcatherium and (2) Hyotherium; and (D) (3) Prodeinotherium and (4) Brachypotherium. 39 References Harzhauser, M., Piller, W.E. 2007. Palaeogeography, Palaeoclimatology, Palaeoecology 253, doi: http://dx.doi. org/10.1016/j.palaeo.2007.03.031 Mikuž, V., Pohar, V. 2001. Razprave IV. Razreda, SAZU Rögl, F., 1999. Geologica Carpatica 50(4), http://www.geologicacarpathica.com/browse-journal/volumes/50-4/article-138/ Van der Made, J., Mazo, A.V. 2003. Proceedings of the Second International Mammoth Conference, Rotterdam Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Katarína Holcová1, Martina Havelcová2, Natália Hudáčková3, Šárka Hladilová4, Katarína Šarinová5, Michal Jamrich6, Marianna Kováčová6, Andrej Ruman6 1 Charles University in Prague, department of Geology, Prague, Czech Republic, holcova@natur.cuni.cz 2 The Institute of Rock Structure and Mechanics of the Czech Academy of Sciences, Prague, Czech Republic 3 Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia, 4 Masaryk University, Department of Geology, Brno, Czech Republic 5 Comenius University Bratislava, Faculty of Natural Sciences, Department of Mineralogy, Petrology and Economic Geology, Bratislava, Slovakia 6 Comenius University Bratislava, Faculty of Natural Sciences, Department of Geology and Paleontology, Bratislava, Slovakia The Upper Badenian seagrass meadows from the NE part of the Vienna Basins – multiproxy evidence Seagrass/seaweed meadows represent “islands” of rare agglutinated foraminifers ( Textularia). In algal life in the marine ”deserts” formed of muddy, sandy, limestones, the abundant epiphytic taxa as Lobatula, stony or rocky substrates. The primary precondition Planorbulina, Elphidium, Miniacina, Biasterigerinata, Borelis for the evaluating the contribution of fossil seagrass/ melo, and rare small miliolids were recorded. From al-seaweed meadows to the shelf biodiversity is their gal species at SAN and STU localities the most abun-successful identification in the rocks. The direct signal dant genus is Mesophyllum. Less frequent are Lithotham-represented by seaweed/seagrass body fossils is rare. nion, Lithophyllum and Spongites, while Titanoderma and Other possibilities are indirect evidence based on the Hydrolithon are rare. presence of protists and animals associated with sea- The locality Dúbravka-Fuchs´ Quarry (FQ) is situat-grass/seaweed meadows or organic geochemistry and ed on the eastern slope of Devínska Kobyla. Coral-a biomarker study. Although some studies focused on linacean clay beds and limestones contain epiphytic the biogeochemistry of modern seagrass meadows elphidia and Asterigerinata. Assemblages from overly- (e.g. Ficken et al. 2000), they have never been tested ing sandstones and conglomerates dominate by small for the application on fossil ecosystems, except in the miliolides, mostly Pseudotriloculina rotunda and elphidia. Pleistocene (Ortiz at al. 2021). Special is the great abundance of pioneer arborescent We selected four localities with indicative seagrass fo- settler Miniacina miniacea. raminifera from the foothills of the Malé Karpaty Mts DNV BAZ Locality is situated on the Morava riv- (Slovakia). All samples were studied by an integrated er bank in the Devínska Nová Ves vicinity. Samples approach including paleontology (foraminifera, cal- contain Bryozoa, red algae, crab claws, fragment of careous nannoplankton, molluscs, palynology), organ- molluscs, echinoderms, Cirripedia and fish bones. Fo-ic-geochemistry (n-alkanes, Pr/Ph-ratio) and elemen- raminifera assemblage dominated by Amphistegina, eptal analysis. 40 iphytic forms living at leaves microhabitat as Lobatula Sections with index calcareous nannoplankton species lobatula, Biasterigerin a, Miniacina and Elphidium sp. div., (DNV BAZ, Fuchś Quarry) can be correlated with and rhizome microhabitat forms as Rosalina/Discorbis NN6 zone. Palynomorphs are nearly absent, which is and Textularia pala. Infaunal forms ( Bulimina, Bolivina, probably consequence of their oxygenation. Globocassidulina) were rare. Plankton includes Globigeri-The Sandberg locality (SAN) is situated at the western na bulloides, G. regularis and Dentoglobigerina altispira. slopes of Devínska Kobyla Hill. All samples are domi- Locality Stupava - Vrchná Hora (STU) is located at nated by keeled elphidia (mainly E. crispum), which has the north-eastern border of the Vienna Basin. Fo-been reported to dominate on Ectocarpus thalli (Langer raminiferal tests are recrystallized and represents ep-1988). The assemblages also include leaves microhab- iphytic forms as Ammonia, Biasterigerina, Elphidium. In Presentations itat dwellers Neoconorbina, Biasterigerina, Lobatula and algal limestone foramifers of D morphotype, typical th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Figure: Organic-geochemistry proxies measured in the study samples for Udotea sp. algae (Langer, 1988) as Quinqueloculina, Triloculina are common. Though studied localities differ by lithologies and paleontological content, the organic-geochemistry re- cord is uniform (Figure). The clear evidence of sub- merged/floating macrophytes (= sea grasses) is repre- sented by presence of C , C and C n-alkanes. The 21 23 25 most abundant n-alkanes C – C indicate that the 16 19 organic matter originates from algae (both micro- and macroalgae) and bacteria. Macroalgae can also be ex- pected from body fossils of Corallinales found in all localities. The markers of terrestrial plants (n-alkanes > C27 and indexes TAR, Paq; Figure) indicate strong dominance of marine organic matter over terrestrial. 41 Pr/Ph (pristan/phytan)-ratio reached values between 0.59 and 0.70 suggesting anaerobic conditions. References Ficken, KJ. et al. 2000. Organic Geochemistry 31, doi: https://doi.org/10.1016/S0146-6380(00)00081-4 Langer, M. 1988. Revue de Paleobiologie 2, https://www.researchgate.net/publication/235217515_Recent_Epiphyt-ic_Foraminifera_from_Vulcano_Mediterranean_Sea Ortiz, JE. et al. 2021. Journal of Iberian Geology 47, doi: http://dx.doi.org/10.1007/s41513-021-00175-y Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Natália Hudáčková, Michal Jamrich, Andrej Ruman Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia, natalia.hudackova@uniba.sk Decades of constant tweaks - microbiostratigraphic chaos of Vienna Basin (DCTMCVB) Observations of microfossils in Miocene sediments Soviet Union (e.g. Subbotina 1953). Generalizing these date back to the late 19th century. Scientists such as essentially local schemes was underway in the 1960s Christian Gottfried Ehrenberg and Ernst Heinrich (e.g. Bandy 1964, Banner and Blow 1965), boosted Haeckel made in 19th century pioneering contribu- by DSDP. This unification process in the Central Pa-tions, laying the foundation for Miocene microbiostra- ratethys launched RCMNS commission by defining tigraphy. Since the mid-20th century, microfossil zones regional biozones and their correlation with global have played a key role, so paleontologists have iden- zones (Cicha et al. 1975). A specific approach has been tified and widely used them based on e.g. foraminif- used by oil companies where regional correlation ho-era, nannofossils, diatoms, radiolarians, dinoflagellates rizons and local biozones are still in use (Irena Zaplet-within the Miocene sediments. alová, Věra Molčíková, Pavel Hudec). The recognition Bramlette and Riedel (1954) first pointed out the strati- of biostratigraphic horizons (biohorizons) correlated graphical significance of coccoliths, and the knowl- between stratigraphic sections was broadly discussed edge of Cenozoic nannoplankton increased rapidly in McGowran (2005). Following this work, Wade et since then. Zonations were defined by Brönnimann al. (2011) revised and unified Cenozoic planktonic fo-and Stradner (1960), Hay et al. (1967), Bramlette and raminiferal magnetobiochronology, which is the basis Wilcoxon (1967), Roth (1970), Roth et al. (1971), Mar- for the current trend. This was the basis for the work tini and Worsley (1970), Martini (1970), Bukry (1973) of Kováč et al. (2018) on the Central Paratethys re-and Okada and Bukry (1980). Up-to-now widely ac- gional scale. cepted work in this field is zonation brought by Mar- Despite new knowledge, different biostratigraphic tini (1971). At the beginning of the Deep-Sea Drilling scales are still used. They do not always sufficiently Project (DSDP), nannoplankton zonations were far clarify the relationships with other regions. On the behind their planktonic foraminifera counterparts. Be- other hand, changes achieved by obtaining and refin-sides the DSDP data, Martini also considered the shal- ing geochronological data sometimes leads to uncriti-low water sediments of continental Europe and N/S cal shifting of traditional local biozones in relation to America. As a significant geological area, researchers time. However, the original biozones were not cali-have studied the Vienna Basin (VB) foraminifera and brated, and new data are often unavailable. nannoplankton extensively for decades. Nannofossils from VB were studied by e.g. Herbert Stradner, Car- la Müller, Ružena Lehotayová, and Aida Andrejeva Grigorovič using Martinìs (1971) zonation. Andreje- va Grigorovič et al. (2001) applied subzonation sensu Fornaciari et al. (1996) and Marunteanu (1999). 42 Regional biostratigraphic schemes based on fo- raminifera developed in parallel with taxonomic and stratigraphic research, beginning in the 1940s in the oil-producing parts of the USA (e.g. Cushman and Stainforth 1945) and Central Europe (Grill, 1941 – 48, Papp and Turnovski 1953). By the mid-20th century, such schemes reached high levels of sophistication in Western Europe (e.g. Bolli 1957a, b) and the former The study was supported by APVV-20-0079, APVV-22-0523, APVV-16-0121, VEGA-2/0013/20, VEGA-1/0526/21, Presentations APVV-20-0120, VEGA-2/0106/23. th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References Andrejeva Grigorovič A.S. et al. 2001. Scripta Facultatis Scientiarum Naturalium Universitatis Masarykianae Brunensis Bandy, O.L. 1964. Micropaleontology 10(1), doi: https://doi.org/10.2307/1484621 Banner F.T., Blow W.H. 1965. Nature 207(5004), doi: https://doi.org/10.1038/2071351a0 Bolli H.M. 1957a,b: U.S. National Museum Bulletin 215, https://library.si.edu/digital-library/book/bulletinunited2151957unit Bramlette M.N., Riedel W.B. 1954. Journal of Paleontology 28(4), https://www.jstor.org/stable/1300155 Bramlette M.N., Wilcoxon, J.A. 1967. Tulane Studies in Geology and Paleontology 5(3), https://journals.tulane.edu/ tsgp/issue/view/40 Brönnimann P., Stradner, H. 1960. Erdoel-Zeitschrift 76(10) Bukry, D. 1973. Deep Sea Drilling Project Initial reports 15, http://deepseadrilling.org/15/volume/15dsdp.pdf Cicha I. et al. 1975. Proceedings of VI Congress Bratislava, Prague Cushman, J.A., Stainforth, M.R. 1945. Cushman Laboratory for Foraminiferal Research, Special Publication 14 Fornaciari, E. et al. 1996. Micropaleontology 42(1), doi: http://dx.doi.org/10.2307/1485982 Grill, R. 1941. Oel und Kohle 37 Grill, R. 1943. Mitteilungen des Reichsamts für Bodenforschung 6 Grill, R. 1948. International geological congress, Part XV, London Hay, W.W. et al. 1967. Transactions of the Gulf Coast Association of Geological Societies 17 Holcová, K. et al. 2019. Facies 65(3), doi: http://dx.doi.org/10.1007/s10347-019-0576-1 Kováč, M. et al. 2018. Geologica Carpathica 63 (3) 10.1515/geoca-2018-0017 Martini, E. 1970. Nature 226, doi: https://doi.org/10.1038/226560a0 Martini, E. 1971. Proceedings of the II Planktonic Conference, Roma Martini, E., Worsley, T. 1970. Nature 225(5245), doi: https://doi.org/10.1038/225289a0 Marunteanu, M. 1999. Geologica Carpathica 50(4), http://www.geologicacarpathica.com/browse-journal/volumes/50-4/ McGowran, B. 2005. Cambridge University Press Okada, H., Bukry, D. 1980. Marine Micropaleontology 5, doi: https://doi.org/10.1016/0377-8398(80)90016-X Papp, A., Turnovski, K. 1953. Jahrbuch der Geologischen Bundesanstalt 96(1), https://www.marinespecies.org/foraminifera/aphia.php?p=sourcedetails&id=280231 Roth, P.H. 1970. Eclogae Geologicae Helvetiae 63(3) Subbotina, N.N. 1953. Proceedings of the Oil Research Geological Institute 76 Wade, B.S. et al. 2011. Earth-Science Reviews 104, doi: https://doi.org/10.1016/j.earscirev.2010.09.003 43 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Matúš Hyžný Comenius University, Faculty of Natural Sciences, Department of Geology and Palaeontology, Bratislava, Slovakia; matus.hyzny@uniba.sk Preservation of burrowing shrimps (Malacostraca: Decapoda: Axiidea) in Miocene siliciclastics of the Central Paratethys Burrowing shrimps (Malacostraca: Decapoda: Ax- The sediments in which fossil burrowing shrimps iidea) are soft-bodied, fossorial decapods inhabiting lived were quite variable (as are those of their modern predominantly shallow intertidal and subtidal marine counterparts), but usually siliciclastic (sandy to mud-environments. Often living in high densities, they rep- dy; with or without volcanoclastic admixture) to car-resent major bioturbators of muddy and sandy sub- bonate mud (Dworschak et al. 2012). In Miocene silici-strates having great impact on physicochemical prop- clastic sediments of the former Central Paratethys, all erties of the sediment (Dworschak et al. 2012, and three main types of preservation (as outlined above) references therein). can be documented at various localities. However, in Much of the burrowing shrimp’s integument is re- Early and Middle Miocene clays of selected exposures duced because the burrow walls replace many of the yet another type of preservation was identified. In this cuticle’s functions. Due to the delicate nature of most type of preservation, the disassociation unit is pre-of the cuticle, only the hardened parts are usually served as a set of isolated elements preserved apart preserved, with heavily calcified chelipeds preserved from each other but simultaneously close enough to most frequently, although other parts are sometimes be identified as originating from the same individual. preserved as well. Three main types of preservation This intermediate type of preservation (in respect to in terms of completeness of the material can be ob- the categorization outlined above) required only minor served for burrowing shrimps (Bishop & Williams post-mortem transport and virtually no physical disin-2005; Hyžný & Klompmaker 2015): (1) (Near) com- tegration following the final deposition. Such condi-plete body fossil, in which the majority of all three tions were only rarely met in the known fossil record main parts of the shrimp are present (i.e., carapace, of burrowing shrimps. legs, and pleon); (2) Disassociation unit representing a natural aggregation of exoskeleton elements com- monly preserved together (i.e., cheliped disassociation unit, pleonal disassociation unit, etc.); (3) Isolated ele- ment of the exoskeleton found without any associated parts from the same specimen. 44 The research was funded by the Slovak Research and Development Agency under contract no. APVV-22-0523. References Bishop G.A., Williams A.B. 2005. Proceedings of the Biological Society of Washington 118, https://doi.org/10.2988/0 006-324X(2005)118[218:TAPOBT]2.0.CO;2 Dworschak P.C., Felder D.L. & Tudge C.C. 2012. Treatise on Zoology — Anatomy, Taxonomy, Biology — The Crustacea, Decapoda, 9/B, https://doi.org/10.1163/9789047430179_004 Presentations Hyžný M., Klompmaker A.A. 2015. Arthropod Systematics & Phylogeny 73, 10.3897/asp.73.e31829 th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Kristina Ivančič1, Miloš Bartol1, Miha Marinšek1, Polona Kralj1, Eva Mencin Gale1, Jure Atanackov1, Aleksander Horvat2 1 Geološki zavod Slovenije, Ljubljana, Slovenia, kristina.ivancic@geo-zs.si 2 Ivan Rakovec Institute of Paleontology, ZRC SAZU, Ljubljana, Slovenia A review of the Neogene sedimentary successions in Eastern Slovenia The Neogene sedimentary successions in north-east- ised by prograding delta and shelf-slope deposits and is ern and eastern Slovenia reveal a complex interplay of notable for its fine-grained sediments and sandy turbid-tectonic activity, sea-level changes and climatic varia- ites. The Ptuj-Grad Formation compasses clastic sedi-tions. Four major tectonic units come into contact in ments from the Upper Pannonian to the Pontian stage, this region: Eastern Alps, Southern Alps, Dinarides illustrating a period dominated by braided and mean-and the Pannonian Basin System (PBS). Tectonic ac- dering river systems. This formation is significant for tivity caused the formation of several faults and folds, its detailed sedimentary record including gravelly sands which divided the area and influenced the sedimenta- and interbedded silty layers, which provide insights into tion. The most prominent of them are the Periadriat- the fluvial dynamics at the time, locally, alkali basaltic ic Fault (PAF), the Labot Fault and the Donat Fault volcaniclastic deposits occur (Maros et al., 2012). (which continues as the Balaton Fault) and the Sava Neogene sedimentation south of the PAF continued Folds. They led to distinct sedimentation patterns of from Oligocene. The oldest formation is called Govce three depositional units, each characterised by unique formation, which include Egerian to Eggenburgian geological processes and depositional environments: poorly lithified sediments (clay, sand, sandstone, marl-north of the PAF, south of the PAF and south of the stone, claystone, conglomerates) deposited in shallow Sava Folds (Ivančič et al, in review). marine, brackish and terrestrial environments. The North of the PAF, sedimentation was associated with Badenian sediments of the Laško formation discor-the Mura-Zala and Styrian Basins. Neogene sedi- dantly overlapped the Govce formation. They consist mentation started in the Karpatian and continued to of a mixture of marl and lithothamnium limestone, Plio-Quaternary. Sedimentary sequences are united in deposited in shallow marine environments. This for-various formations. The oldest is the Haloze Forma- mation is particularly noted for its rich bivalve and gas-tion, represents a series of sedimentary layers from the tropod macrofossils, which provide valuable paleoen-Karpatian to the early Badenian. It is characterised by vironmental data and highlight its importance in the over 1300 metres of coarse to fine-grained sediments, biostratigraphic correlation within the Central Parate-deposited during the first syn-rift phase of the PBS thys. The Sarmatian Beds consist of sandy and clayey in terrestrial, transitional and shallow marine environ- marl, calcarenite, and quartz sandstone. Deposited in a ment. Succession is represented by conglomerates, brackish environment, marked by a significant reduc-sandstones, and muddy breccia, sandstones, marlstons tion in salinity and changes in the depositional environ-and limestone (Maros et al., 2012). The Špilje Forma- ment, reflecting the final stages of marine influence in 45 tion consists of sediments deposited from the early the region. In places the Sarmatian samples are known Badenian to the early Pannonian, deposited during the as the Dol formation (Pavšič and Horvat, 2009). syn- and post-rift phases of the PBS. This formation South of the Sava Folds, the Krško area represents the is characterised by diverse sedimentary environment, third depositional unit. Sedimentation took place in ranging from shallow to deep marine settings, which the Ottnangian and from the upper Badenian onwards. facilitated the deposition of sandy turbidites. The Špilje There are a number of Neogene formations, ranging Formation is significant for its considerable thickness, from the Govce Formation, with coarse-grained ter-up to 1600 meters, and its role in documenting the restrial sediments, the Laško formation, which show transition from marine to deltaic environments. The similarities with successions south of PAF, the Drno-Lendava Formation contains sediments representing vo Formation, which consists of Pannonian marls and the development of a large deltaic system, character-Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe represents a transition from a marine to a lacustrine en- vironment. The youngest sediments include Bizeljsko and Raka formations, which represent later stages of deltaic and terrestrial sedimentation during the Upper Pannonian period (Poljak, 2017). The Plio-Quaternary alloformations represent the youngest sedimentary units, indicating the onset of the latest terrestrial sedimentation processes in Slovenia. These deposits are predominantly composed of gravel, sandy gravel, and muddy sediments that are often pe- dogenised, reflecting a landscape heavily influenced by fluvial dynamics and terrace formation. They are pres- ent in all three units, south and north of the PAF and in Krško area (Ivančič et al., in review). 46 References Ivančič, K. et al. 2024. A review of the Neogene formations and beds in Slovenia, Western Central Paratethys. In review. Maros, G. et al. 2012. Summary report of the geological models, TRANSENERGY project, http://transenergy-eu. geologie.ac.at/ Pavšič, J.; Horvat, A. 2009: The Eocene, Oligocene and Miocene in central and eastern Slovenia. Geology of Slovenia Presentations Poljak, M. 2017: Guide to geological map of the eastern part of Krško valley 1 : 25.000 th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Marijan Kovačić1, Michal Šujan2,3, Tomislav Kurečić4, Frane Marković1 1 University of Zagreb, Faculty of Science, Department of Geology, Zagreb, Croatia, mkovacic@geol.pmf.hr 2 Comenius University in Bratislava, Faculty of Natural Sciences, Department of Geology and Paleontology, Bratislava, Slovakia 3 Laboratory of Quaternary Research, Nature Research Centre, Vilnius, Lithuania 4 Croatian Geological Survey, Zagreb, Croatia Authigenic 10Be/9Be dating and provenance of Late Miocene deposits from the North Croatian Basin (Bozara section, SW Pannonian Basin System, Croatia) During the Late Miocene in the North Croatian Basin Based on authigenic 10Be/9Be dating, the weighted (NCB), located in the southwestern part of the Pan- mean age of the Bozara section is suggested to be nonian Basin System (PBS), a several kilometres thick 6.33±0.15 Ma. The results form a single population sequence, vertically arranged in a transgressive-re- with an exception of one outlier. The grain size and gressive cycle, was deposited in Lake Pannon, a huge modal analyses have shown that the sand is fine-long-lived, endorheic brackish lake (Pavelić & Kovačić, grained and well-sorted. Its composition is dominated 2018). The stratigraphic classification of these deposits by quartz, muscovite and particles of older sedimenta-was based on endemic fossil communities and is still a ry or metamorphic rocks. Garnets, epidote and chlo-subject of great debate (Magyar et al., 2013). Recently, rites are the most abundant heavy minerals. the authigenic 10Be/9Be dating method has been used The suggested age of the Bozara section is within the for age determination of Upper Miocene and Pliocene time interval encompassing the Portaferrian (8.0–4.5 deposits in the central and northern parts of the PBS Ma) and can therefore be considered credible. The tex- (e. g., Šujan et al., 2016; Magyar et al., 2019), whereas in tural features and modal composition of the sediments the NCB this method was only applied to a few sam- at the Bozara locality are typical for detritus of Alpine ples from wells in the Drava depression (Špelić, 2023). provenance, which was transported into the NCB from In the eastern part of the NCB, on the southern slopes the northwest by prograding fluvial systems during the of Mt. Papuk, a 27-meter-thick sequence of pelitic regressive phase of Lake Pannon evolution (Sebe et al., and sandy sediments rich in fossil molluscs and os- 2020). Based on these results, we assume that the shelf tracods is exposed along the Bozara stream. Based on margin of Lake Pannon was located in the area of the the sedimentological characteristics of the studied de- western part of Papuk at ca. 6.3 Ma. posits and the identified benthic fauna, Mužek et al. (2023) showed that deposition took place during the Portaferrian (younger part of the late Pannonian) in a brackish lake environment. The deposits show a shal- lowing upward trend from deep-water sublittoral and 47 distal prodelta settings to the deltaic shallow, high-en- ergy, littoral environment. The results presented herein report on the age of the investigated deposits using the authigenic 10Be/9Be radiometric dating method on 18 samples of pelitic sediments as well as the grain size and modal com- position of four sand samples. The results obtained were used to reconstruct the provenance of the sandy detritus and the shelf margin of Lake Pannon. Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References Magyar, I. et al. 2013. Global and Planetary Change 103, doi: https://doi.org/10.1016/j.gloplacha.2012.06.007 Magyar, I. et al. 2019. A tribute to the research and teaching of Frank Horváth 149 (3), doi: https://doi. org/10.23928/foldt.kozl.2019.149.4.351 Mužek, K. et al. 2023. Palaeogeography, Palaeoclimatology, Palaeoecology 632, doi: https://doi.org/10.1016/j.palaeo.2023.111847 Pavelić, D., Kovačić, M. 20118. Marine and Petroleum Geology 91, doi: https://doi.org/10.1016/j.marpetgeo.2018.01.026 Sebe, K. et al. 2020. Geologia Croatica 73 (3), doi: http://dx.doi.org/10.4154/gc.2020.12 Špelić, M. 2023. PhD Thesis, University of Zagreb Šujan, M. et al. 2016. Global and Planetary Change 137, doi: http://dx.doi.org/10.1016/j.gloplacha.2015.12.013 48 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Krešimir Krizmanić1, Željka Marić Đureković2, Morana Hernitz Kučenjak1, Tamara Troskot Čorbić1, Sanja Šuica1, Mario Matošević1 & Goran Mikša1 1 INA Industrija nafte d.d., Exploration and Production, Field Development, Exploration and Production Laboratory, Zagreb, Croatia 2 INA Industrija nafte d.d., Exploration and Production, Field Development, Integrated Reservoir Studies & CCS, Zagreb, Croatia The integral approach of the subsurface facies interpretation, Drava depression, Croatia For the petroleum industry, complex well analyses, es- Also, the age of the sediments, marine, brackish, and pecially for the basin-wide studies or regional subsur- freshwater paleoenvironments and paleoecology, facts face interpretation, multi-disciplinary knowledge is cru- about the type and content of organic matter in the cial in delivering risk reducing results in acceptable time palynological macerals have been defined. and cost consumption. Nowadays, the usual workflow In the geochemical assessment, the standard geochem-combines 3D seismic attributes, well-logs, core data ical methods were performed. Organic geochemistry and all available geological information. Simultaneous- analyses were carried out to determine quantity, qual-ly, faster, closely specialized, and sophisticated software ity, and maturity of organic matter; special attention packages are created daily, and every new version needs was paid to the optical parameters and biomarkers even more specific and detailed data. Unexpectedly, important in various depositional conditions and en-that lead towards a process paradox. It is required to vironment, and facies evaluation. produce quality data in no time as cheap as possible from an inadequate or even lacking sample. All obtained dana were combined with the borehole logging results. Conventional well logging was used for Very often the drilling campaign is planned to last an general lithology determination and correlation between extremely short time. Consequently, a special PDC wells. Resistivity image log interpretation and electrofa-type drilling bit is used, which results in extremely cies analysis based on MRGC (Multi Resolution Graph small drill cuttings, often completely disintegrated lose based Clustering) methodology gave us a more detailed sediments, increased borehole inclination and caving sedimentological insight into the drilled complex. affect. Wire-line logging operations are reduced. Cor- ing has become very rare, so the core data are missing. In the DR-03 Paratethys Neogene sediment succession starts after a long-lasting emersion, on a weathered Recently, three exploration wells Veliki Rastovac-1, and tectonised Palaeozoic-Mesozoic paleorelief with Obradovci-1 Jug and Milkleuš-1 have been drilled in the continental syn-rift talus and alluvial fan deposits the Drava Depression on Drava-03 Exploration Block in the Ottnangian. Towards the Karpatian and during (DR-03). the lower Badenian, lake sedimentation took place. Not nearly all the requirements of modern workflow In the middle Badenian the first marine transgression were met during the drilling, but through multidiscipli- occurred (PAVELIĆ & KOVAČIĆ, 2018; ĆORIĆ, nary work, by combining different geological methods, 2009). The syn-rift tectonics lasted till the upper Bad- 49 the result of the research and post-drilling evaluation enian when post-rift sedimentation took place and the of the wells were quite satisfactory regardless the spe- regression started. In the Sarmatian, the Paratethys be-cifics of sample collection, caving, shredded small drill come detached from the world’s seas and turned into cuttings, no core samples, and no complete well-log- a brackish or even freshwater environment in places, ging program. which caused the vast extinction of stenohaline species Using petrographical, palynological, micropaleonto- and the appearance of the euryhaline organisms which logical, geochemical and other specific analytical meth- very often exhibited endemism, making biostratigraphic ods in the geological research laboratory, rock classifi- analysis challenging and complicated. The boundary becation, mineral composition, provenance, mechanism, tween the Middle and Upper Miocene is characterized and place of sedimentation have been established. by a continuous transition or marked by a hiatus. Lake Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Pannon, that has flooded the whole Drava depression, locally developed brackish shallow-water calcite-rich marls, the first sediments in the Upper Miocene suc- cession. As a result of the rapid subsidence, a deep depositional setting was formed, in which the open lake sediments were deposited. At first sporadically and then more often distal turbidites entered the basin floor as the most distant part of the large delta system that pro- ceeded through the Drava basin, triggering facies pro- gradation both in terms of space and time. After distal, proximal turbidites has been deposited. Turbiditic series have been overlayed by the slope toe subaquatic fan de- posits followed by the slope pelites and finally shelf/del- taic bodies which towards the younger sequences (up- per Pannonian and Pliocene) were formed in freshwater and shallow environment in which specific green algae prevailed. The youngest sediments (Pliocene-Quater- nary) were commonly represented by the gravels, sand, silt clay and coal. 50 References Ćorić, S. et al. 2009. Geologia Croatica 62, doi:10.4154/GC.2009.03 Presentations Pavelić, D., Kovačić, M. 2018. Marine and Petroleum Geology 91, https://doi.org/10.1016/j.marpetgeo.2018.01.026 th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Krešimir Krizmanić1, Željka Marić Đureković2, Morana Hernitz Kučenjak1, Tamara Troskot Čorbić1, Mario Matošević1 & Goran Mikša1 1 INA Industrija nafte d.d., Zagreb, Croatia, kresimir.krizmanic@ina.hr 2 Croatian Geological Society, Zahgreb, Croatia The insight on subsurface facies analysis and related depositional environments, Drava depression, Croatia A new well (Milkleuš-1) has recently been drilled in the The organic matter content of the Middle Badenian scope of the Block DRAVA-03 exploration. Despite sediments varies. Marls and carbonate shales show all the difficulties and efforts to save time and money, evidence of amorphous organic matter with a mixed multidisciplinary work combining laboratory petro- origin (kerogen type II-III). graphical, palynological, micropaleontological, geo- The syn-rift phase slowly weakened and lasted until chemical and other specific analytical methods with the upper Badenian when post-rift sedimentation took the borehole logging geophysical data, exchange of place and the regression started. The deep marine en-information, correlation and evaluation of each data vironment progressively become shallower thus shelf, set, synthesized results and detailed subsurface facies peri reef and littoral sandstone (calcarenaceous/cal-classification of the Pre-Pannonian and Panonnian carenites), limestones of the mudstone type and marls, depositional environments have been achieved. carbonate shales enriched with organic matter) sedi- In general, the Neogene sediment succession of the ments occurred. Biostratigraphical association com-Drava depression started in the Ottnangian with the bines benthic foraminifera, less planktonic foraminif-continental syn-rift talus and alluvial fan sediments era and ostracods, bryozoans and urchin spines. The created by rock-falls and fluvial mechanism, deposited established planktonic and benthic foraminifera indion a weathered and tectonized Palaeozoic-Mesozoic cate Upper Badenian age of deposits deposited in a basement. shallower marine environment. Pre-Pannonian deposits in Drava-03 exploration area The shallowing of the depositional environment con-are composed of polymictic brecciaconglomerate, tinues through the uppermost Badenian and in the calcareous sandstones, siltstones, and mostly calcar- Sarmatian, when Paratethys become detached from eous marl. In the observed area breccia conglomer- the world’s seas causing significant environmental ate, pebbly sandstone to sandstone, marls, carbonate change from marine into brackish and freshwater shales enriched with organic matter, dominantly of settings. Consequently, the stenohaline organisms be-terrestrial origin, (kerogen type III), have been detect- come extinct and the euryhaline organisms took over. ed. Green algae Botryococcus sp. and Pediastrum spp. were The most successful were prasinophytes, an opportunis-found indicating Karpatian to lower Badenian conti- tic cosmopolitan group of unicellular green algae that nental environment with freshwater lake deposits and prevail in the new paleoenvironment. As a result of most possible some alluvial or deltaic sediments. Sub- their exceptional abundance, the uppermost Badenian sequent marls, limestones, calcarenaceous/calcarenite to Sarmatian calcareous marls and shales are source 51 sandstone and pebbly sandstone indicate the first ma- rocks with good to very good generative potential in rine transgression in the area. Biostratigraphical asso- which kerogen type II dominate. ciation, which points to the middle Badenian age, is An additional difficulty is represented by the fact that made of dinoflagellate cysts, benthic and planktonic due to the isolation of the Paratethys, pioneer species foraminifera. very often showed endemism, which made biostrati- Gradual deepening of the depositional environment graphic analysis challenging and complicated. How-resulted in sedimentation of more fine-grained lithol- ever, by comparison with the molluscs biozonation, ogies enriched with organic matter. In the biostrati- the palynozonation and division of the Pannonian graphical association planktonic foraminifera prevail sediments have been made based on phytoplankton over the benthic forms. (mostly dinoflagellate cysts). Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe The first Upper Miocene sediments were formed in the Lake Pannon. Marls, clayey limestone and locally developed brackish shallow-water calcite-rich marls deposited in somewhat restricted settings are biostrati- graphically affiliated to the lowermost Pannonian palynozone Spiniferites pannonicus/Mecsekia ultima, by the findings of the homonymous dinocyst and prasionphyte species. As a result of the rapid thermal subsidence, a deep depositional setting was formed, and open lake sed- iments were deposited. On the basin floor entered first distal and then proximal turbidites followed as the most distant part of the large delta system that proceeded through the Drava basin, causing facies progradation (space, lithology, time). Those deeper water marls, siltstones and sandstones belong to the subsequent Pannonian palynozones Spiniferites oblongus, Pontiadinium pecsvaradensis and Spiniferites balcanica zone. Turbidites were overlayed by the slope toe subaquat- ic fan deposits. The slope pelites of upper Pannonian Galeacysta etrusca palynozone followed. According to pyrolytic and optical maturation param- eters, the organic matter in the entire well profile is immature. Low content of immature, autochthonous bitumen is extracted. Biomarker analysis indicates that the bitumen’s origin and maturity are consistent with the associated kerogen. The Pliocene muddy and clayey lake deposits and sand/sandstone shelf/deltaic bodies which towards the younger sequences were formed in freshwater and shallow environment of the Lake Slavonia become unfavourable for the dinoflagellates hence only fresh- water green algae prevailed. The youngest sediments of the succession were made of Pliocene-Quaternary gravels, sand, silt, clay, and coal. 52 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Sergei Lazarev1,2, Oleg Mandic3, Marius Stoica4, Stjepan Ćorić 5, Kakhaber Koiava6, Davit Vasilyan2,1 1 Department of Geosciences, University of Fribourg, Fribourg, Switzerland, sergei.lazarev@unifr.ch 2 JURASSICA Museum, Porrentruy, Switzerland 3 Geological-Paleontological Department, Natural History Museum Vienna, Vienna, Austria 4 Faculty of Geology and Geophysics, University of Bucharest, Bucharest, Romania 5 GeoSphere Austria, Vienna, Austria 6 Ivane Javakhishvili Tbilisi State University, Tbilisi, Georgia Progress in dating and biozonation of the Sarmatian s.l. Stage in the Eastern Paratethys The Eastern Paratethys is a former epicontinental basin that unified the Black Sea, Caspian Sea and the Dacian Basin and played a crucial role in shaping the west Eurasian paleoecosystems. In the late Middle– Late Miocene, during the Sarmatian sensu lato Stage (12.65 – 7.65 Ma), the Eastern Paratethys became hy- drologically isolated from the global ocean. This pro- cess was accompanied by the adaptation and radiation of endemic faunas in the Volhynian and Bessarabian (early and middle Sarmatian s.l., respectively) and by the near complete extinction of aquatic life forms in the Khersonian (late Sarmatian s.l.). Despite a relative- ly clear understanding of the faunal trends during the Sarmatian s.l., neither faunal biozonation nor reliable age constraints yet exist for the Sarmatian s.l. substag- es. This complicates the intrabasinal correlation and hampers our understanding of the drivers of biotic demise and paleoenvironmental and hydrological per- turbations in the Eastern Paratethys. Here, we present a synthesis of integrated stratigraphic data from three geological outcrops across the Eastern Paratethys: Jga- li (Georgia, Black Sea Basin), Nadarbazevi (Georgia, Kura Foreland, Caspian Basin) and Karagiye (Kazakh- stan, Caspian Basin). With the new data on the pale- omagnetic dating, mollusc, ostracod, foraminifera and 53 nannoplankton biostratigraphy of the Volhynian, Bes- sarabian and Khersonian (sub)stages we will highlight the progress and challenges of dating and biozonation of the Sarmatian s.l. This research is funded by the Swiss National Science Foundation, grant agreement № 200021_197323. Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Valerije Makarun1, Đurđica Pezelj1, Karmen Fio Firi1, Marijan Kovačić1 1 University of Zagreb, Faculty of Science, Department of Geology, Horvatovac 102b, Zagreb, Croatia, valerije.makarun@geol.pmf.unizg.hr New findings of genus Creusia Leach, 1817 (Cirripedia: Pyrgomatidae) in the Badenian deposits of the Banovina region (Croatia) The Banovina region represents the southwestern als (Yap et al., 2023). Organic matter produced by cor-edge of the Pannonian Basin System, which was cov- al zooxanthellae represents one of the carbon sources ered by the Paratethys sea during most of the Bade- for the barnacle, while, in return, they provide ammo-nian. The Cepeliš locality is situated 5 km southwest nium for zooxanthellae (Brickner et al., 1997). Howev-of the town of Petrinja and the studied succession er, our specimens are not preserved within their host consists of Paleogene clastics which are transgressive- corals (cf. Baluk & Radwanski, 1967), probably due to ly overlain by the Badenian Leitha limestone. Above the dissolution of the corals’ aragonitic skeletons. the transgressive boundary ten specimens of barnacle belonging to the Creusia genus were found. Since they indicate a subtidal coral-reef environment, these fossils are useful for paleoecological reconstruc- Fossil findings of genus Creusia in Croatia were pre- tion. Even though they live in a high-energy environ-viously reported only from the Badenian Leitha lime- ment, their shells are not disarticulated, suggesting stones of the Dvor locality in the Banovina region their preservation in situ. These findings, together and Podsused area near Zagreb (Baluk & Radwanski, with the ongoing studies of the Cepeliš locality de-1967). Our finding represents large fossil assemblage posits, will help in determination of the paleoenviron-of this genus in the Badenian of the Paratethys sea. ments of the southwestern part of the Paratethys sea Creusia barnacles, as other pyrgomatids, are character- during the Badenian epoch. ized by a symbiotic relationship with scleractinian cor- 54 This study was supported by the Croatian Science Foundation, Project SEDBAS, IP-2019-04-7042 References Baluk, W., Radwanski, A. 1967. Geološki Vjesnik 20, https://geoloski-vjesnik.hgi-cgs.hr/wp-content/uploads/2022/05/1967_Baluk-Radwanski_281.pdf Brickner, I., Erez, J., Achituv, Y. 1997. Marine Biology, 130/2, https://link.springer.com/article/10.1007/ s002270050244 Presentations Yap, F.-C. et al. 2023. Scientific Reports, 13/1, doi: 10.1038/s41598-023-33738-3 th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Oleg Mandic, Mathias Harzhauser, Thomas A. Neubauer Geological-Paleontological Department, Natural History Museum Vienna, Vienna, Austria, oleg.mandic@nhm-wien.ac.at Middle Miocene endemic mollusks from the Dinarides Lake System: a case study from the Bugojno Basin in Bosnia and Herzegovina During the Middle Miocene, the Dinarides Lake Sys- in species richness contributed by melanopsid, hydro-tem (DLS) was a major hotspot of freshwater mol- biid and neritid gastropods, along with the dreissenid lusk diversity in southeastern Europe (Neubauer et bivalves. al., 2015a). The numerous intramontane lake basins, The present taxonomic evaluation proved the spe-originating from combined effects of tectonic subsid- cies-level identifications from previous studies incor-ence and humid climate, accumulated thick lacustrine rect, resulting in a completely new understanding of successions (de Leeuw et al., 2012). Due to diagenetic the stratigraphic and paleobiogeographic significance overprint and leaching of these carbonate-rich depos- of the Lake Bugojno mollusk fauna for the DLS evo-its, insights into faunal contents have been restricted lution. In particular, the fauna shows a low level of to only a few basins up to the present (Neubauer et al., similarity with other DLS basins, matching the gen-2015b). We contribute to fill this gap by documenting eral pattern of interbasinal dissimilarity detected by for the first time a mollusk fauna from the Bugojno previous taxonomic studies. Such a pattern cannot be Basin in Bosnia and Herzegovina. explained by different depositional conditions as the The succession is excellently outcropped in the open- discussed mollusk fauna derives from very similar pal-pit coal-mine Gračanica NW Gornji Vakuf-Uskoplje. eoenvironments of coal-bearing successions. At least The fauna originates from a coal-bearing succession parts of this taxonomic dissimilarity in the various representing the gradual flooding of coastal wetlands DLS basins might have been caused by their isolated followed upwards by the establishment of perennial geographic settings, exampled by the recent regional lacustrine settings. Additionally to the mollusks, the diversity hotspot Lake Ohrid. The distribution of bi-succession comprises an exceptionally rich fossil re- ostratigraphic marker species suggests an age younger cord of terrestrial and aquatic fauna and flora, mak- than 15 Ma, pointing out the Lake Bugojno fauna as ing it an important spot on the route for terrestrial the youngest Middle Miocene mollusk-bearing hori-mammal migrations from Africa and Asia Minor into zon in the DLS. Europe (Göhlich & Mandic, 2020). In summary, our taxonomic analysis documents 17 The mollusk fauna of Gračanica comprises 14 limnic gastropod and two bivalve species. New to science are and 5 terrestrial species. Their distribution in the three species attributed to the genera Prososthenia, 40-m-long succession allows to detect paleoenviron- Bania, and IIlyricocongeria. A paleoecological analysis mental changes during the history of Lake Bugojno. based on quantified samples shows distinct shifts in Terrestrial species are restricted to the coal-bearing mollusk composition and abundance. The terrestrial lower part of the succession representing swamp taxa are restricted to the coal-bearing interval of the and marsh deposits. Transitional deltaic cross-beds section; melanopsids, neritids and hydrobiids are abun-are associated with a peak in melanopsid gastropod dant in deltaic and littoral settings, whereas bivalves 55 abundance, whereas the subsequent establishment of are frequent in littoral and sublittoral environments. littoral and sublittoral conditions is marked by a domi- In line with previous results, which have evidenced a nance of dreissenid and sphaeriid bivalve species. The high degree of intralacustrine radiation in the DLS, the overlaying interval, which seems to reflect profundal Lake Bugojno fauna shows a low to moderate level of depositional environments of Lake Bugojno, is barren similarity to other DLS faunas. The dissimilarity may of mollusks. A short-term shallowing trend, recorded partly also result from its younger age, as suggested in the topmost part of the section, coincides with the by the presence/absence pattern of regional biostrati-occurrence of shell accumulations marked by peaks graphic markers. The study contributes the FWF project No. I 4950-N “Did the Dinaric Alps force arid climate and speciation during Miocene Climatic Optimum?”. Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References De Leeuw, A. et al. 2012. Tectonophysics 530-531, doi: https://doi.org/10.1016/j.tecto.2012.01.004 Göhlich, U., Mandic, O. 2020. Palaeobiodiversity and Palaeoenvironments 100(2), doi: http://dx.doi.org/10.1007/ s12549-020-00437-0 Neubauer, T.A. et al. 2015. Proceedings of the National Academy of Sciences of the United States of America 112(37), doi: https://doi.org/10.1073/pnas.1503992112 Neubauer, T.A. et al. 2015. Austrian Journal of Earth Sciences 108(2), doi: http://dx.doi.org/10.17738/ ajes.2015.0013 56 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Miha Marinšek1, Valentina Hajek-Tadesse2, Tea Kolar-Jurkovšek1, Luka Gale1,3 1 Geological Survey of Slovenia, Ljubljana, Slovenia; miha.marinsek@geo-zs.si 2 Croatian Geological Survey, Zagreb, Croatia 3 University of Ljubljana, Faculty of Natural Sciences and Engineering, Department of Geology, Ljubljana, Slovenia Badenian Ostracods of North-Eastern Krško Basin The Krško basin, located in the southeastern part of Slovenia, was and continues to be an area of several investigations and studies (Poljak et al., 2016; Poljak, 2017). One branch of these studies that holds quite significant weight in the understanding of the whole area is paleontology Organisms that were investigat- ed were molluscs, ostracods, and foraminifera (Poljak, 2017). The previous ostracod studies were mostly fo- cused on the Pannonian deposits, as other ages were determined on the basis of foraminifera or sedimen- tological analyses. In the studied area of the North-Eastern Krško basin, we found a rare and Badenian ostracod fauna previ- ously undocumented in Slovenia. As previously men- tioned, the emphasis of ostracod research in Slovenia was on Pannonian deposits so this find is an important one as it allows us to better understand the biostrati- graphic and geographic distribution of ostracods in Slovenia and Central Paratethys. The marine ostracod assemblages consist of mixed deep-marine and shallow-water species: Aurila haueri, Aurila sp., Bairdoppilata cf. subdeltoidea, Bosqueti- na carinella, Bunonia dartonensis, Buntonia subulate, Cytherella cf. compressa, Cytherella parallela, Cyth- eropteron vespertilio, Ghardaglaia cf. pectinate, Hen- ryhowella asperrima, Loxocorniculum hastata, Olim- faluina plicatulla, Parakrithe cf. crystallina, Parakrithe dactylomorpha, Paranesidea brevis, Phlyctenopho- ra affinis, Pterygocythereis calcarata, Semicytherura galea, Xestoleberis dispar, Xestoleberis tumida. 57 Some species that were found are not constrained to the Badenian. Ostracod assemblages indicate lower to middle Badenian age of the investigated sediments. References Poljak, M et al. 2016. Geologija 59/2, https://doi.org/10.5474/geologija.2016.008 Poljak, M. (2017): Geological map of the eastern part of the Krško basin 1:25.000: explanatory booklet Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Miloš Markič Geological Survey of Slovenia, Ljubljana, Slovenia, milos.markic@geo-zs.si Neogene coals of Slovenia Neogene coals in Slovenia (Markič et al., 2007; and metres to 2.2 meters thick within 125 (Petišovci) to references therein) occur it two basic paleogeographic 175 (Globoko) meters thick sediments of the upper and tectonic realms: as paralic coals in the periphery Pannonian (formerly “Pontian”) age. Lignite-bearing of the SW part of the Pannonian Basin System and sediments are freshwater, while sediments between as coals in intramontane basins within the Dinarides lignite-bearing sequences are brackish. A distinctive (Fig.). The first two are represented by coals in NE sedimentary cyclicity occurs between the lignite seams, Slovenia in the Mura-Zala Basin (best explored in the with the coarsest sediments (sands) approximately in Lendava – Petišovci - Benica area) and by coals in the the middle of them. Krško Basin (best explored in the Globoko area). Ne- Numerous coal seams were detected throughout ogene intramontane coals occur in the Velenje, Kr- the Mura-Zala Basin by hydrocarbons wells, but not melj, Kočevje, Kanižarica and Ilirska Bistrica basins. proved exactly by core drilling data. Deep coals (>800 All Neogene coals in Slovenia are lignites of predom- m) of this basin represent a huge potential for e.g. car-inantly huminite maceral composition. The highest bon sequestration. coalification-rank lignites are those of the Mura-Zala Paralic coal deposits are tectonically simple, the Pe-Basin. In the deepest parts, below cca. 1000 m, they tišovci considerably more than the Globoko one. transit to meta-lignites due to well-known increased Their present tectonic structure is a consequence of geothermal gradient. Most Neogene lignites of Slove- compressional regime and related basin inversion dur-nia are low grade coals with 20–30 mass % ash yield ing the Pannonian times up to the present. (dry basis), with 1.0–2.6 mass % sulphur content (dry basis), and calorific value in a range of 10.0–13.3 MJ/ Intramontane lignite-bearing basins are tectonically kg (at the “economic” as received basis). Exceptions more complicated, also exhibiting a final compressional are the Kočevje lignite with 4.5 mass % of sulphur regime. Lignite beds are less numerous but thicker, up and calorific value 14.6 MJ/kg, and, on the other hand, to 7 metres, in Kočevje some of them even much more. the Ilirska Bistrica lignite with only 6.2 MJ/kg calorific Such a variability can be explained by different original value. The lowest grade lignite is the Krmelj one with peat thicknesses, their differential compaction and dif-35 mass % ash yield. ferent contribution of mineral-rich intersediments. Diagenesis from peat to lignite ran predominantly in al- Intramontane basins are filled by freshwater sediments. kaline (Ca-rich) paleo-environments due to prevailingly Defining the exact age is more complicated than in the pre-Neogene carbonate rocks in the hinterland, and case of paralic coals. Among the best results were ob-carbonate fine clastics compacted to different degrees tained by pollen analyses. (clayey silts/siltstones, silts/siltstones, fine sands/sand- Both the Kočevje and Kanižarica coals are known by stones, and “marlstones”) in vertical and lateral vicinity high radioactivity (e.g. uranium content in the Kanižar-of the lignite seams. Silicious component generally in- ica coal 250 µg/g comparing to ca. 3 µg/g in “world creases with increasing coarsening (middle and coarse coals”), interestingly, especially in the lower-most beds 58 sands/sandstones). Thrue clays are subordinated and close to the Mesozoic carbonates. Increased radioac-so are conglomerates. Alkaline environments enhanced tivity is also well known for many Ca-rich coals in the bacterial activity favourable for both reduction of sul- Dinarides, but of Paleogene age (e.g. Vremski Britof, phates to sulphides and acceleration of biochemical Sečovlje, and Raša). processes of transformation of organic matter from original heterogeneous vegetal material to more uni- The Velenje ortho-lignite seam is among the world form one. This process, also known as biochemical coal-thickness phenomena with its thickness of up gelification, affected fine organic detritus easier and to 100 meters, extremely to 160 m. It occurs approx-earlier than bigger wooden pieces. imately in the middle of a 1000 m thick Pliocene to Quaternary clastic sedimentary sequence filling a typi- Paralic lignites of the Pannonian Basin are developed cal pull-apart intramontane basin close to the Periadri-Presentations as numerous lignite seams (15–20) from some centi- atic Lineament. th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Figure: Neogene lignites in this map are the following: paralic Lendava and Globoko and intramontane Velenje, Krmelj, Kočevje, Kanižarica and Ilirska Bistrica. The Ilirska Bistrica lignite is only one single less than 5 m thick low-grade mineral-rich lignite at a depth of cca. 70 m. It is of a negligible economic value but was explored and also exploited between 1930 and 1950. High-quality clays are deposited above it up to the surface. Arsenic (As) content is outstanding for the Pannonian Basin lignites in Slovenia. Only a few analyses involv- ing As content were done but all indicate high con- 59 tents – above 100 µg/g in “whole coal” samples – ex- tremely to 390 µg/g in the Murska Sobota Sob-3g well in comparison to 7.6 µg/g for the world coals. References Markič et al., 2007, Geologija, 50(2), https://doi.org/10.5474/geologija.2007.028 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Monika Milošević1, Viktória Baranyi1, Vlasta Ćosović2, Valentina Hajek-Tadesse1, Ines Galović1, Mirjana Miknić3 1 Croatian Geological Survey, Department of Geology, Zagreb, Croatia, mmilosevic@hgi-cgs.hr 2 Department of Geology, Faculty of Science, University of Zagreb, Zagreb, Croatia 3 Bartolići 49, Zagreb, Croatia The first results of paleoecological interpretation of the Middle Miocene sediments in the North Croatian basin based on smaller benthic foraminifera, Case study: Striježevica borehole, Papuk Mt. The Papuk Mountain and Psunj, Krndija, Dilj, and pendent methods; P/B ratio, modified P/B ratio (after Požeška Gora Mts. represent an isolated inselberg ring van der Zwaan (1990), and gradient analyses (Ho-known as the Slavonian Mountains in the southern henegger, 2005 and Baldi & Hohenegger, 2008) were Pannonian Basin. The Striježevica borehole was drilled used to describe depositional (water) depth. Estimated on the southern slopes of Papuk Mt. The sedimentary depth ranges from the middle shelf to upper bathyal sequence, 95 meters thick in total, was lithologically environments. All applied methods show a shallowing described, with certain intervals selected for detailed (regressive) trend upward which is also confirmed by micropaleontological and palynomorph analyses. The an increase in oxygen content at the sea bottom, lower sedimentary sequence consists predominantly of marly species richness, and, a decrease in diversity indices but sediments, with frequent sandy intercalations and a an increase in dominance in the benthic foraminiferal few limestone intercalations. A total of 84 samples assemblage (Mandic et al., 2019). were collected at 1 m resolution. We combine quan- The nannoplankton zonal marker Sphenolitus heteromor-tified records of foraminifera and palynomorphs with phus Deflandre is present along the entire section indi-unquantified records of ostracods and nannoplankton cating deposition during the NN5 Zone. According to produce an accurate stratigraphic and paleoenviron- to the Croatian dinoflagellate zonation (Bakrač et al., mental reconstruction. 2012) the sediments of the Striježevica borehole can Paleoecological analyses based on smaller benthic fo- be correlated to the Uaq Interval Zone ( Unipontidini-raminifera, so far, show three distinct phases in the um aquaeductus). The composition of the foraminiferal depositional evolution of the sedimentary succession. assemblages attributed the studied sediments to the The lower part of the succession, dominated by in- Lagenidae Zone, and thus, also confirm the Middle faunal species indicates nutrient-rich environments in Miocene age. the water depth at the lower boundary or even below the photic zone (Hudačkova et al., 2020; Kranner et al., 2021). A decrease in oxygen supply, as amplifica- tion of environmental stress is detected by the highest proportion of dysoxic taxa, the decreasing trend of Fisher α and Shannon-Wiener index values together 60 with the increasing trend of Dominance index values. These trends and the composition of smaller benthic assemblage indicate eutrophication (Baldi, 2006; Baldi & Hohenegger, 2008). Mesotrophic conditions in the middle part of the succession could be described as “a transitional environment”, leading to the oligotrophi- cation in the upper part of the succession. Three inde- This research was conducted in the scope of the internal research project „RAMPA -Razvoj miocenskih paleookoliša na prostoru Hrvatske i njihova povezanost s globalnim događajima“at the Croatian Geological Survey, funded by the Nation-Presentations al Recovery and Resilience Plan 2021–2026 of the European Union – NextGenerationEU, and monitored by the Ministry of Science and Education of the Republic of Croatia.“ th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References Bakrač, K. et al. 2012. Geologica Croatica 65(2), doi: http://dx.doi.org/10.4154/gc.2012.12 Báldi, K. 2006. International Journal of Earth Sciences 95, doi: http://dx.doi.org/10.1007/s00531-005-0019-9 Báldi, K., Hohenegger, J. 2008. Geologia Carpathica 59(5), http://www.geologicacarpathica.com/browse-journal/ volumes/59-5/article-455/ Hohenegger, J. 2005. Palaeogeography, Palaeoclimatology, Palaeoecology 217, doi: https://doi.org/10.1016/j.palaeo.2004.11.020 Hudáčková, N. et al. 2020. Palaeontologia Electronica 23, doi: https://doi.org/10.26879/1067 Kranner, M. et al. 2021. Palaeogeography, Palaeoclimatology, Palaeoecology 581, doi: https://doi.org/10.1016/j. palaeo.2021.110640 Mandic, O. et al. 2019. Palaios 34, doi: https://doi.org/10.2110/palo.2018.052 Van Der Zwaan, G.J. et al. 1990 Marine Geology 95(1), doi: https://doi.org/10.1016/0025-3227(90)90016-D 61 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Katja Mužek1, Oleg Mandic2, Valentina Hajek-Tadesse1, Nevena Andrić-Tomašević3 1 Department of Geology, Croatian Geological Survey, Zagreb, Croatia, kamuzek@hgi-cgs.hr 2 Geological-Paleontological Department, Natural History Museum Vienna, Vienna, Austria 3 Institute of Applied Geosciences, Karlsruhe Institute of Technology, Karlsruhe, Germany Exploring the lacustrine ostracods and mollusks: preliminary results of the Kongora section (Tomislavgrad Basin, Dinarides Lake System) During the Miocene, a multitude of intra-montane at the eastern margin of the Tomislavgrad Basin, ap-basins emerged within the Dinarides mountain range. proximately 11 km southeast of Tomislavgrad. This These basins were characterized by the development 2-m-thick section is located on the eastern bank of the of a series of long-lived lakes, collectively referred to Rudnik Lake and comprises a succession composed as the Dinarides Lake System (DLS), which harbored primarily of silty clay and poorly sorted conglomer-endemic lacustrine fauna (de Leeuw et al., 2011; Krstić ate. Five sediment bulk samples were extracted from et al., 2003). the section. The mollusk fauna is represented solely by The Livno-Tomislavgrad basin in Bosnia and Herze- fragmented remains of minute shells including among govina hosted one of the principal lakes within the others sphaeriid bivalves (Pisidium sp.) and planorbid DLS. The basin infill of lacustrine sediments is sep- ( Gyraulus sp.) gastropods indicating fresh-water depo-arated into two distinct lake phases corresponding to sitional setting. the evolution of the basin. The first phase denotes a In the analyzed samples, the freshwater ostracod fauna period when the basin remained undivided, hosting was documented, representing three distinct families: the long-lived Lake Livno. Subsequently, during the Candonidae (Kaufman), which includes Candona neglecta second phase, separate lakes formed within the divid- Sars, Candona sp., and Fabaeformiscandona? sp.; Cyprididae ed Livno and Tomislavgrad basins (de Leeuw et al., (Baird), encompassing Scottia browniana (Jones) Brady 2011; Papeš, 1975; Kochansky-Devide & Slišković, & Norman, and Scottia sp.; and Ilyocyprididae (Kauf-1978, 1980). man), with the presence of Ilyocypris cf. bradyi Sars. The initiation of the second lake phase started with The identified Ilyocypris bradyi has been document-the deposition of white marls in separate lakes – Livno ed from the Miocene, Pliocene, and Pleistocene and and Tomislavgrad. Two distinct lithological units char- is still living now. This discovery underscores the re-acterize the uppermost strata of deposits from the markable longevity and evolutionary constancy of I. second phase. The first one comprises a coal series, bradyi within aquatic environments (Meisch, 2000). characterized by alternating layers of lignite and clays, Conversely, species such as Candona neglecta and Scottia while the second unit consists of a variegated series browniana have been documented from the Pliocene to composed of layers of clays and sands with frequent the Pleistocene (Van Baak et al., 2013; Sokač, 1978). limestone concretions (Papeš, 1975). 62 The Kongora section, which can be correlated with the second unit overlying the lignite layers, is situated This research was conducted in the scope of the internal research project „Development of Miocene paleoenvironments in Croatia and their connection with global events (RAMPA)“ at the Croatian Geological Survey, funded by the National Recovery and Resilience Plan 2021–2026 of the European Union – NextGenerationEU, and monitored by the Ministry Presentations of Science and Education of the Republic of Croatia. th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References Kochansky-Devide V. and Slišković, T. 1978. Miocenske Kongerije Hrvatske, Bosne i Hercegovine. Palaeontologia Jugoslavica, 19 Kochansky-Devide V. and Slišković, T., 1980. Mlađe miocenske Kongerije Livanjskog, Duvanjskog i Kupreškog Polja u jugozapadnoj Bosni i Hodova u Hercegovini. Palaeontologia Jugoslavica. 25. Krstić, N. et al. 2003. Acta Geologica Hungarica vol. 46/3, https://doi.org/10.1556/ageol.46.2003.3.4 de Leeuw, A. et al. 2011. Stratigraphy 8/1, 10.29041/strat.08.1.03 Meisch, C. 2000. Freshwater Ostracoda of Western and Central Europe. Sußwasserfauna von Mitteleuropa 8/3 Papeš, J. 1975. Basic Geological Map 1:100 000. Explanatory notes for sheet Livno. Sokač, A. 1978. Pleistocene Ostracode fauna of the Pannonian Basin in Croatia. Palaeontologia Jugoslavica 20. Van Baak, C.G.C. et al. 2013. Global and Planetary Change 103/1, 10.1016/j.gloplacha.2012.05.004 63 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Anastasia Ninić1, Dragana Životić2, Dejan Radivojević1 1 Faculty of Mining and Geology, Department of Regional Geology, University of Belgrade, Belgrade, Serbia, anastasianinic@gmail.com 2 Faculty of Mining and Geology, Department of Economic Geology, University of Belgrade, Belgrade, Serbia Challenges and Insights: Sequence Stratigraphy of Pannonian Coals in the Drmno Depression, Serbia The application of sequence stratigraphy on coal beds data. The sedimentation cycle of each unit commenc-worldwide has significantly contributed to the under- es with fine-grained siliciclastics of the upper delta standing of coal deposits and their origin. On the plain, followed by coarse-grained siliciclastics of allu-southeastern edge of the Serbian part of the Panno- vial channels, and ends with the accumulation of peat nian basin, there is a system of peri-Pannonian basins and the formation of coal. The units located in the characterized by the appearance of Upper Miocene deeper parts of the basin were determined by using coal seams in the siliciclastic fill, which provides an ex- overlapping seismic data and geophysical logging data. cellent opportunity for testing sequence stratigraphy in However, only the upper part of the second unit was young coal basins. In this study, sequence stratigraphy visible on the open section, so they are classified as as-was applied to coals in the Drmno Depression, which sumed. On the other hand, the third and fourth units presents a challenge to traditional prospecting meth- are located in shallower parts and were defined based ods due to its lack of lateral continuity. on both well data and field data from open sections The deposition of siliciclastics was formed in the upper and are therefore classified as certain. delta plain, which then transitioned into alluvial chan- The age of the youngest sedimentological unit was nels with segments of swamps where peat accumu- determined by biostratigraphy, based on the differ-lated. The accumulation of peat and siliciclastics was ent species of Prosodacnomya bivalva. The discovery cyclical, from the geometry of the layers, it is evident of Prosodacnomya carbonifera in the southern region re-that the center of peat accumulation moved vertically, vealed an age of 7.5-8 million years (Radivojević et al., due to the inability of horizontal expansion as a result 2022), while the discovery of P rosodacnomya elongata in of the developed vegetation (Gradzinski et al., 2003). the northern part indicated an age of 7.2 million years Four sedimentological units were distinguished based (Radivojević et al., 2022). on geophysical logging data, seismic profiles, and field 64 References Gradzinski, R. et al. 2003. Sedimentary Geology 157, doi: https://doi.org/10.1016/S0037-0738(02)00236-1 Radivojević, D. et al. 2022. International Journal of Earth Sciences 111, doi: https://doi.org/10.1007/s00531-022-Presentations 02209-x th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Antonina Nosowska Faculty of Geology, University of Warsaw, Warsaw, Poland, a.nosowska@student.uw.edu.pl Biostratigraphy of middle Miocene deposits overlying and underlying the Outer Carpathians based on calcareous nannoplankton – preliminary results The studied N-2 well is located in the area of Rzeszów of Discoaster, important for Miocene biostratigraphy, Bay in Southern Poland. The Middle Miocene deposits have been found in the studied samples. The rela-of Rzeszów Bay were formed as a result of the trans- tively rare occurrence and poor preservation state of gression of the Paratethys Sea onto the eroded margin discoasters in the Carpathian Foredeep deposits are of the Outer Carpathians (Kotlarczyk 1991). Due to known from the previous research (e.g. Garecka 2014, orogenic movement, the Carpathian deposits, togeth- Oszczypko-Clowes et al. 2012). The stratigraphically er with the overlying transgressive Miocene deposits, important Sphenolithus heteromorphus is present in were overlapped on the area of the Outer Carpathian samples taken from the autochthonous Miocene de-Foredeep. In the N-2 well, the transgressive Miocene posits. Single specimens also occur in a few samples of deposits of Rzeszów Bay (claystones interbedded with transgressive Miocene deposits. All samples also con-sandstones) are located at a depth of 21 – 540 m, while tain reworked Paleogene and Cretaceous taxa, mainly: the autochthonous Miocene deposits of the Carpathi- Ericsonia formosa [ed: Coccolithus formosus], Cyclian Foredeep (claystones) are located at a depth of cargolithus abisectus, Reticulofenestra bisecta, Retic-3260 – 3315 m. The examined samples were taken ulofenestra lockeri, Reticulofenestra reticulata, Retic-from the drilling core at depths of 520 – 526 m and ulofenestra umbilicus, Watznaueria barnesiae, Micula 3270 – 3274 m, 3276 – 3285 m, 3290 – 3299 m, 3303 staurophora. – 3309 m and 3312 – 3315 m, thus comprising both Biostratigraphic conclusions were based on Martini’s transgressive and autochthonous Miocene deposits. (1971) zonation: the NN4/NN5 boundary was deter- Calcareous nannoplankton assemblages in the Middle mined by the last occurrence of Helicosphaera amplia-Miocene deposits within the studied geological col- perta, while the NN5/NN6 boundary was established umn exhibit limited taxonomic diversity. The samples by the last occurrence of S. heteromorphus. Prelimi-from the autochthonous Miocene and the transgres- nary research results indicate that samples taken from sive Miocene deposits are dominated by Coccolithus autochthonous Miocene deposits belong to the NN5 pelagicus and small Reticulofenestra species. Cyclicar- zone sensu Martini (1971). In most examined samples, golithus floridanus, Reticulofenestra pseudoumbilicus S. heteromorphus was recorded and no H. ampliaperta and Helicosphaera carteri occur in smaller numbers. was found. It seems that samples from the transgressive The samples also include: Calcidiscus leptoporus, Cal- Miocene deposits belong to the NN6 zone, although a cidiscus premacintyrei, which have been recorded in few samples contain single specimens of S. heteromor-samples from autochthonous Miocene only, Umbili- phus. These may potentially be redeposited elements cosphaera jafari, Reticulofenestra perplexa, Helicos- in deposits belonging to the NN6 zone. According to phaera carteri var. burkei, Helicosphaera walbersdor- Hohenegger et al. (2014), the NN5 zone corresponds fensis, Sphenolithus abies, Sphenolithus moriformis, to the middle and late Badenian and the NN6 zone 65 Pontosphaera multipora, Braarudosphaera bigelowii, corresponds to the late Badenian and Sarmatian. Thoracosphaera saxea. No well-preserved specimens References Garecka, M. 2014. Biuletyn Państwowego Instytutu Geologicznego 459, doi: http://dx.doi. org/10.5604/08676143.1113062 Hohenegger, J. et al. 2014. Geologica Carpathica 65(1), doi: http://dx.doi.org/10.2478/geoca-2014-0004 Kotlarczyk, J. 1991. Paleontologia a batymetria Martini, E. 1971. Proceedings of the II Planktonic Conference, Roma Oszczypko-Clowes, M. et al. 2012. Geologica Carpathica 63(4), doi: https://doi.org/10.2478/v10096-012-0022-6 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Đurđica Pezelj1, Jurica Sabol2 1 University of Zagreb, Faculty of Science, Department of Geology, Zagreb, Croatia, djurdjica.pezelj@geol.pmf.hr 2 Museums of the Croatian Zagorje, Gornja Stubica, Croatia Decoding the changes in Middle Miocene shelfal environments by studying foraminiferal assemblages: Bednja section (Hrvatsko Zagorje Basin, Croatia) The Bednja section located in northern Croatia, near Within benthic foraminiferal assemblages, five epithe town of Krapina, consists of marly deposits at- faunal, oxic species dominate. The relative abundanc-tributed to the Middle Miocene and originated in the es of species Asterigerinata planoribis dÒRBIGNY Central Paratethys sea (Hrvatsko Zagorje Basin). Fo- (18.7 – 29.8%), Elphidium fichtelianum dÒRBIGNY raminiferal tests were obtained using the wet sieving (8.5 – 16.7%) and Elphidium crispum dÒRBIGNY method and analyses were performed on standardized (5 – 10.9%) exhibit slight fluctuations along the sec-samples (approximately 300 randomly selected spec- tion. The abundances of species Cibicidoides ungerianus imens in the ≥ 63 µm size fraction) with the aim of dÒRBIGNY (12.8 – 45.3%) and Lobatula lobatula paleoecological reconstructions of the environment WALKER & JACOB (4.7- 20.3%) show significant (including paleobathymetry, salinity, concentration variations that are considered a complementary rela-of organic matter and oxygen availability at the sea- tionship. Intervals with lower oxygen concentration floor). For these objectives we addressed the follow- on the seafloor (lower BFOI values) and a higher P/B ing characteristics of foraminiferal assemblages: 1) the ratio have a higher abundance of L. lobatula specimens, planktonic/benthic ratio (P/B ratio) (Murray, 2006); 2) while intervals characterized by higher BFOI values dominant and common species of benthic foraminif- and a lower abundance of planktonic foraminifera are era, their known ecological/paleoecological prefer- dominated by C. ungerianus individuals. This relation-ences (like known depth ranges, mode of life, food ship between the species L. lobatula and C. ungerianus preferences); and 3) the values of diversity indices and indicates the existence of competition between them Benthic Foraminifera Oxygen Index (BFOI) (Kaiho, and their reaction to fluctuations in the quantity and 1996; Jorissen et al., 2015). quality of organic matter reaching the seafloor. The values of the P/B ratio varied from 6.0 to 46.7%, showing oscillations along the section, indicating pos- sible changes in the depth of deposition within the middle shelf setting. However, such changes in the P/B ratio can also be caused by selective dissolution of planktonic tests or fluctuations in the productivity of the upper part of the water column, i.e. changes in the quantity and quality of the nutrient flux to the seafloor. 66 This study was supported by the Croatian Science Foundation, Project SEDBAS, IP-2019-04-7042. References Murray, J.W. 2006. Cambridge University Press, New York, doi: https://doi.org/10.1017/S0016756808004676 Kaiho, K. 1994. Geology 2, doi: http://dx.doi.org/10.1130/0091-7613(1994)022%3C0719:BFDOIA%3E2.3.CO;2 Presentations Jorissen, F.J. et al. 1995. Marine Micropaleontology 26, doi: https://doi.org/10.1016/0377-8398(95)00047-X th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Dejan Radivojević1, Radonjić Miloš2, Katona Lajos Tamás 3, Imre Magyar 4 1 University of Belgrade, Faculty of Mining and Geology, Department of Regional Geology, Belgrade, Serbia, dejan.radivojevic@nis.rs 2 Serbia ZiJin Mining, Čukaru Peki Mine, Geology Department, Bor, Serbia 3 Hungarian Natural History Museum–BTM, Zirc, Hungary 4 HUN-REN-MTM-ELTE Research Group for Paleontology, Budapest, Hungary 5 MOL Plc, Október huszonharmadika utca 18, Budapest, Hungary Shelf-edge advancement in the southeastern perimeter of Lake Pannon, Banat (Serbia and Romania) During the late Neogene period, the Pannonian Ba- Approximately 9.6 to 9.1 million years ago, following sin situated in Central Europe underwent a process of the inundation of the foothills of the Southern Car-sediment deposition as rivers flowing from the Alps pathians by Lake Pannon, a shelf began to form, ex-and Carpathian Mountains discharged their sediment tending from the Southern Carpathians into the deep loads into Lake Pannon (MAGYAR ET AL., 2013; waters (300 to 500 meters) of the adjacent local de-BUDAI ET AL, 2019). The most prominent source- pression. The expansion of the shelf-edge progressed to-sink system was associated with the ancient Danube to the vicinity of Vršac Island, which is situated about River, which transported sediments from the northern 20 to 25 kilometres to the northwest. This occurred foreland of the Alps into the lake, causing a northwest approximately 7.5 to 7.0 million years ago, and during to southeast progradation of the shelf-edge. In the this time, a small-scale transgressive-regressive cycle southeastern border of the basin, however, localized developed on the flanks of the Vršac Mountains (Fig-sedimentary systems operated in the opposite direc- ure, RADIVOJEVIĆ ET AL., 2022). tion, contrary to the prevailing north-to-south sedi- This cycle involved the deposition of coarse-grained ment flow (MAGYAR ET AL., 2013, TER BORGH materials sourced locally during the initial flooding, ET AL., 2014). which were subsequently covered by offshore marls that The duration and rate of advancement of these represented the peak of flooding. These layers were fur-counterflow systems were previously unknown. We ther overlain by a regressive deltaic sequence originating conducted an investigation of one such sedimenta- from the Southern Carpathians. ry system in the southeastern region of Banat, at the southeastern tip of the Pannonian Basin (RADIVO- JEVIĆ ET AL., 2022). This system transported mate- rial from the westernmost part of the Southern Car- pathian Mountains toward the central region of the basin in the northwest. 67 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Figure: Schematic representation of the evolution of the study area between the Southern Carpathians and the Vršac Mts across the Zagajica depression– A - Initial shelf-edge forms at the S Carpathians (9.7– 9.6 Ma); B Shelf-edge progradation across the Zagajica depression (9.6–7.6 Ma); C Transgression on the flanks of the Vršac Mts (7.6 Ma); D Shelf-edge progradation fills the Zagajica depression and passes by the Vršac Mts (7.1 Ma); E Present-day conditions, formed by Quaternary basin inversion, deposition in the basin center and erosion on the flanks of the mountains (RADIVOJEVIĆ ET AL., 2022). verageverage rate of progradation of the shelf-edge, roughly around 10 kilometers per million years, was nearly an order of magnitude lower than the progradation rate observed in the 68 contemporary paleo-Danube shelf located on the opposite northwestern side of the lake. References Budai, S. et al. 2019. International Journal of Earth Sciences 108, doi: https:// Doi. org/10. 1007/ s00531- 019-01745-3 Magyar, I. et al. 2013. Global Planet Change 103, doi: https://doi.org/10.1016/j.gloplacha.2012.06.007 Radivojević, D. et al. 2022. International Journal of Earth Sciences 111, doi: https://doi.org/10.1007/s00531-022-02188-z Presentations Ter Borgh, M. et al. 2014. Basin Research 27, doi: https://doi.org/10.1111/bre.12094 th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Raičković Katarina, Radivojević Dejan University of Belgrade, Faculty of Mining and Geology, Department of Regional Geology, Belgrade, Serbia, katarina.raickovic975@gmail.com Neogene Paleoenvironmental Dynamics: Insights from the Čerević Region in Northern Serbia’s Fruška Gora The northern Fruška Gora region holds paramount evident from the predominance of carbonate facies importance in deciphering the Neogene geological and abundant marine fossils such as planktonic and evolution of northern Serbia, particularly regarding the benthic foraminifera, ostracods, bryozoans, red algae, Miocene and Pliocene deposits associated with the evo- corals and echinoids, suggesting shallow marine and lution of the southern margin of the Pannonian Basin warm conditions. Interbasin turbations observed in represented by significant environmental fluctuations Badenian marls at the Erdelj site further support the driven by rapid shifts in abiotic factors. Furthermore, possibility of carbonate slope proximity. The Sarma-the scarcity of geological survey papers on Čerević tian deposits continued to exhibit characteristics of (Radoičić & Jovanović, 2012) and its surrounding area shallow water, with a shift toward marl formations, (Ter Borgh et al., 2013) makes this article particularly indicating lower energy conditions in waters between valuable, as it provides new insights into the diversity marine and brackish salinity. Early Pannonian deposits of sedimentary environments, their interconnections exhibited features of a bottomset delta environment, which are represented by facial associations, and their characterized by alternating marl and silt formations evolution through stratigraphic and tectonic events. deposited in caspi-brackish conditions which alternate Subsequent to field observations and data collection toward continental environment formations in upper using standard protocols at fourteen designated field Pannonian. Accordingly, the Pliocene deposits display stops, the collected samples were forwarded to labora- prominent fluvial characteristics, evident from com-tories for further petrological and paleontological anal- mon ripple structures, indicating unidirectional trans-ysis. Utilizing software programs, the obtained data portation and fluctuating flow regimes with occasional was plotted into geological logs corresponding to the avulsion. Finally, the subsequent energy plunges led to Brazilija, Čerević, Erdelj brdo, Filijala, and Šakotinac the formation of bars and alluvial plains. sites. This in-depth analysis enabled the comprehen- In addition to quantitative and qualitative analysis of sive understanding and interpretation of sedimento- satellite imagery, the study employed these methods to logical facies across the temporal spectrum between investigate neotectonics in the area (Figure) and gener-early Miocene and Pliocene. ate reconstruction models putting an accent on slope Our findings reveal a dynamic sedimentary record, stability with respect to erosion/accumulation rates highlighting the transformation of the Čerević area and block movements. This data is further utilized as from typical lacustrine conditions in the early Mio- an indication of the possibility of future rupture activ-cene to marine environment during the Badenian. ity and an understanding of the general safety of the This transition was primarily attributed to the tecton- area. In conclusion, the analysis exposes vulnerabilities ic uplift of the Fruška Gora ridge and subsidence of in the southeastern region’s stability, highlighting the 69 its peripheral margins, leading to the transgression of crucial role of both intense erosion and active neotec-middle Miocene marine waters. This transgression is tonic structures. References Radoičić R. and Jovanović, D. 2012. Geološki anali Balkanskoga poluostrva 73, doi: https://doi.org/10.2298/GAB-P1273031R Ter Borgh, M. et al. 2013. Global and Planetary Change 103, doi: https://doi.org/10.1016/j.gloplacha.2012.10.001 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Yu.V. Rostovtseva Geophysical Center of the Russian Academy of Sciences (GC RAS), 119296 Moscow, rostovtseva@list.ru Facies associations of Middle Miocene (Konkian of Eastern Paratethys) sedimentary succession of the Kura Basin (Ujarma section, Georgia) The Eastern Paratethys Konkian is correlated to the The wave dominated regime resulted in five major fa-Kosovian (13.65–12.829 Ma) in the Central Paratethys cies associations: (1) transgressive erosion facies asso-and is related to the timing of last large Middle Mio- ciation (TE), (2) upper part of sand sheets (SS1), (3) cene marine transgression in Paratethys (Hilgen et al., lower part of sand sheets (SS2), (4) middle shoreface 2012; Hohenegger et al., 2012; 2014). The facies as- (MS), (5) lower shoreface (LS). The first three facies sociations of the Konkian sedimentary sequence of accumulated within the upper part of the shoreface. the Ujarma section (Kura basin, Georgia, Eastern Pa- The wave dominated facies are defined for the Sarta-ratethys), accumulated under different sedimentation ganian and the lower part of the Veseljanian. Accumu-regimes and reflecting the stages of marine transgres- lation of these sediments reflects the onset and maxi-sion, are considered in this conference paper. mum development of the marine transgression. The Ujarma section is located on Eastern Georgia The subaqueous deltaic regime resulted three major (Kakheti) (41˚77′62.24″ N, 45˚14′95.65″ E) and com- facies associations: (1) lower front delta (FD), (2) up-prises well-exposed Konkian-Lower Sarmatian sedi- per prodelta (PD1), (3) lower prodelta (PD2). These ments. Sartaganian and Veseljanian sediments of the facies associations are revealed for the Veseljanian and Konkian stage are defined in the Ujarma section. Total the Lower Sarmatian. These sediments accumulat-thickness of these sediments is approximately 69–73 ed mainly within the shoreface. At this time there is m. The Konkian sediments consist of clays, separate a wide development of subaqueous deltaic sediments sandy layers, as well as alternating clays with sands. against the background of stabilization and weakening The fine-pebble conglomerate occurs at the base of of marine transgression. the Sartaganian. According to determinations of fo- The facies analysis of the Ujarma Konkian sedimenta-raminifera by K.P. Koiava, these sediments containing ry succession reveals eight facies associations reflecting Borelis melo (Fichtel & Moll) correspond to the Sart- the change of depositional environment. The change aganian (Layers 2–6); rocks containing Varidentella of Konkian depositional environments was controlled reussi sartaganica (Krash.) and species of genus Am- by the stages of marine transgression, as well as by the monia (Ammonia beccarii (Linnaeus) and others) cor- progradation and lateral migration of the front delta respond to the Veseljanian (Layers 11–18) (Rostovt- and prodelta. seva et al., 2020). The Ujarma Konkian sedimentary succession is revealed as a facies association reflecting the influence of wave and subaqueous deltaic regimes of accumulation (Figure). 70 This research was funded by budgetary funding of the Geophysical Center of RAS, adopted by the Ministry of Science Presentations and Higher Education of the Russian Federation (project 075-00764-22-00), and by RSF (project 24-17-00273). th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Figure: Depositional environments and facies associations of the Ujarma Konkian sedimentary succession. (a) Depositional environments at the initial Sarmatian in the Kura basin, modified after (Koiava et al., 2012): land (1), shallow water (2), transitional (3), relatively deep-water (4) settings and location of the studied section (5); (b) models of the shallow-marine depositional environments of the Konkian rocks: wave dominated (Layers 1–10) (1) and subaqueous deltaic (Layers 11–18) (2) regimes, (FWWB) fair weather wave base, (MSWB) maximum storm wave base; (c) lithological column and facies associations: transgressive erosion (TE), upper part of sand sheets (SS1), lower part of sand sheets (SS2), middle shoreface (MS), lower shoreface (LS), lower front delta (FD), upper prodelta (PD1), lower prodelta (PD2). 71 References Hilgen et al. GTS2012 Hohenegger, J., Wagreich, M. 2012. International Journal of Earth Sciences, 101, doi: 10.1007/s00531-011-0658-y Hohenegger et al., 2014. Geologica Carpathica, 65, doi.org/10.2478/geoca-2014-0004 Koiava et al., 2012 Bulletin Georg. Natl. Acad. Sci., 6(3): http://science.org.ge/old/moambe/6-3/Koiava.pdf Rostovtseva Yu. V. et al. 2020. Moscow University Geology Bulletin, 75(6): 10.3103/S0145875220060101 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Krisztina Sebe1, Márton Szabó2, Zoltán Szentesi2, Luca Pandolfi3, Noémi Jankó4, Imre Magyar1,2,5 1 HUN-REN–MTM–ELTE Research Group for Paleontology, Budapest, Hungary, sebekrisztina.geo@gmail.com 2 Department of Palaeontology and Geology, Hungarian Natural History Museum, Budapest, Hungary 3 Dipartimento di Scienze, Università della Basilicata, Potenza, Italy 4 University of Pécs, Pécs, Hungary 5 MOL Hungarian Oil and Gas Plc. Budapest, Hungary Fossils from the Upper Miocene (Pannonian) sands of the Pécsvárad sand pit (Eastern Mecsek Mts., SW Hungary) The Mecsek mountains in SW Hungary are an uplifted basement block of the Pannonian Basin. Their Ne- ogene cover includes deposits both from the Middle Miocene Central Paratethys and from its Late Miocene (Pannonian) brackish-water descendant, Lake Pan- non. Along the mountain front, the Pannonian sands of the Pécsvárad sand pit contain a mixed vertebrate fossil assemblage, which gives insight into terrestrial and aquatic biota during various time intervals of the Miocene. The fossil-bearing sands accumulated between 7.6–6.8 Ma, in a high-energy littoral setting of Lake Pannon, as indicated by the mollusc remains. The vertebrate fossil assemblage is relatively diverse compared to the num- ber of finds. The most abundant group, aquatic mam- mals, including at least four odontocete species and a few mysticete taxa, originally lived in the Paratethys, during the Badenian and the Sarmatian. Rhinoceratid remains are reworked from sediments aged some- where between the Karpatian and earliest Pannonian. The single shark tooth must be Badenian, and proba- bly the scombrid fishes have that age as well. Fossils of other fishes (sparids, latids and acipenserids), giant salamanders, turtles, crocodilians and cervids might originate from older Miocene deposits but can be co- eval with the host sands as well. Tapirs and giraffes 72 must have lived on the lakeshores of Lake Pannon, probably contemporaneously with sand deposition or not much earlier. The erosion, enrichment and mixing of the fauna is a result of the uplift and denudation of the Mecsek mountains during Lake Pannon sedimen- tation, caused by neotectonic basin inversion. Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Krisztina Sebe1, Márton Szabó2, Zoltán Szentesi2, Luca Pandolfi3, Soma Budai4, Máté Gregorits5 1 HUN-REN–MTM–ELTE Research Group for Paleontology, Budapest, Hungary, sebekrisztina.geo@gmail.com 2 Department of Palaeontology and Geology, Hungarian Natural History Museum, Budapest, Hungary; 3 Dipartimento di Scienze, Università della Basilicata, Potenza, Italy 4 Turbidites Research Group, School of Earth and Environment, University of Leeds, Leeds,UK 5 University of Szeged, Szeged, Hungary Macrofauna of the Lower – Middle Miocene lacustrine sediments of the Mecsek mountains, SW Hungary: preliminary results Lakes formed in tectonic grabens related to the Mi- tion to the genus Lartetotherium; this taxon is presently ocene rifting of the Pannonian Basin have long been documented in central European localities between known in Serbia and Croatia, but they have only re- the Mammal Neogene Zone (MN) 4 and 9. Our spec-cently been identified in the Mecsek mountains in SW imen was found somewhat below a tuff layer dated to Hungary, where Karpatian–Badenian lacustrine de- 16.8±0,65 Ma, thus it belongs to the MN4 zone. posits occur. Apart from a few endemic molluscs, the The Komló Clay marl Member, which comprises the biota of these successions has not been studied in de- sublittoral lake deposits, is made up of clay marl, silt tail. Our research project 138638 funded by the Hun- and sand, occasionally with coquina and lignite in-garian National Research, Development and Innova- terbeds. Its mollusc fauna is identical to that of the tion Office aims at contributing to the knowledge on Pécsvárad Member, and in addition it contains abun-the poorly documented fauna of the lake sediments. dant gastropod opercula. Fish bones and teeth are Lacustrine deposits were studied at more than a doz- common, among them those belonging to the Spar-en locations, in surface outcrops and in a cave system. idae family. A part of the vertebra and fin bone re-Macrofaunal remains were collected in the field during mains represents the Latidae family. A turtle carapax several campaigns. They often had a poor preservation fragment probably belonged to the pond turtle ( Emys). and needed impregnation already at the outcrop. In In the Eastern Mecsek mountains, black, brown or addition, we sampled sediments for sieving, samples dark grey clay-silt-sand successions with plant remains, attaining about 10 l each. These were sieved after treat- unionid bivalves, gastropod shells and opercula are ment with HCl and/or H O , in 1 mm mesh sieves. A 2 2 classified into the fluvial Szászvár Formation. Based on rhinoceratid mandible collected earlier from the cave the sedimentological features, these can be interpreted was also investigated. as lacustrine delta deposit. 3 - 15 m thick, coarsening The littoral deposits made up of locally sourced con- upward packages represent shallowing upward cycles glomerate, sand(stone), mollusc-bearing sand and from the prodelta through the delta front to the del-limestone are classified into the Pécsvárad Member of ta-top fluvial sediments. Fossil-rich sandy facies most the Kiskunhalas (previously Budafa) Fm. Their mac- probably represent the lower delta front, where floods rofauna is dominated by the bivalve Congeria boeckhi of the rivers discharging into the lake carried large and the gastropod Ferebithynia (Bulimus) vadaszi, accom- amounts of terrestrial material, among others plant panied by 2-3 forms of small snails. Fish remains are remains, and could also transport bivalves inhabiting 73 ubiquitous, identifiable remains are Lates, Sparus and the delta front. The rich but poorly preserved mollusc Siluriformes bones. Some outcrops contained abun- fauna contains at least 3 - 4 species of thick-shelled dant small Sparidae ( Diplodus, Sparus, Pagrus) teeth. unionid bivalves and numerous gastropod taxa, the Sporadically, elongated or spherical vertebrate copro- latter including typical freshwater ones (e.g. Prososthe-lites, turtle carapax fragments, crocodylian ( Diplocyno- nia, Theodoxus spp.). Sieving residues are dominated by don) bones, teeth and osteoderms, and bones of yet gastropod opercula, which show higher morphological unidentified terrestrial mammals were found. The oc- variety than those of the Komló Clay marl. In addi-currence of a young sirenian ( Metaxytherium? ) humerus tion to molluscs, fish bone fragments and teeth were was unexpected. The rhinoceratid mandible belonged found. Similar assemblages have been reported from to an adult individual. The morphological features and the Dinaric Lake System, but there the taxa occurring the small dimensions of the teeth suggest an attribu- in Hungary are accompanied by Congeria species. Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Jasenka Sremac1, Marija Bošnjak2, Josipa Velić3, Marijan Kovačić1 1 Faculty of Science, Department of Geology, University of Zagreb, Zagreb, Croatia, jsremac@geol.pmf.hr 2 Croatian Natural History Museum, Zagreb, Croatia 3 Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Zagreb, Croatia Hunting for the Paratethyan acorn barnacles (Cirripedia: Balanomorpha: Balanidae) The acorn barnacles, inhabitants of the rocky sea- Extracted barnacles (Figure a) and rocks comprising shores, comprise numerous extant genera, but are also barnacle particles were collected in the field, at the known from the fossil record. They also represent Medvednica Mt. and Marijagorička Brda Hills near Za-one of the most common invertebrate encrusters on greb (Croatia), from deposits of the Middle Miocene oyster shells. Their sessile modes of life lead to the (Badenian) age. Cross sections were also recognized specific anatomy of soft tissues and the development in the pebbles from the Quaternary gravels SE of Za-of a complex calcareous skeleton. Due to their habitat greb. Additionally, fossils from the Croatian Natural in high energy environment, complete fossils are not History Museum in Zagreb were also taken into con-very common, but disarticulated plates can be found sideration. in soft sedimentary rocks and extracted from e.g. marls Thin sections were prepared from bioclastic lime-by the standard wet-sieving technique. Their complex stones of the Badenian age and from the pebbles microstructures can be also recognized from cross collected in the Sava River alluvial plane (Figure b). sections of consolidated rocks. Nevertheless, they are Diagnostic features were compared with the study of not particularly handy for biostratigraphical research recent barnacle skeletons. and are therefore rarely studied in detail or even men- tioned in the published papers. Acorn barnacles are the important proxies of the rocky shores and therefore deserve much more atten- The aim of this study is to present the findings from tion in the study of marginal marine deposits in the the Central/ Northern Croatia and give a clue to rec- fossil record. We hope that this study will contribute ognition of barnacles from thin sections. to the better knowledge of this neglected fossil group. 74 Figure: (a) Miocene fossil barnacle Balanus vadaszi Kolosvary, 1949 found at the Marijagorička Brda Hills Presentations (NW from Zagreb) (Vadlja, 2018) and (b) photomicrograph presenting a cross section of a barnacle from the Miocene pebble in the Gravel pit Abesinija (SE from Zagreb). th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe This research was supported by the projects: “Mathematical methods in geology VI, VII and VIII” (2021, 2022, 2023), led by Tomislav Malvić (University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering), and Croatian Science Foundation Project “Sedimentary paleobasins, water corridors and biota migrations” (IP-2019-04-7042), led by Marijan Kovačić (University of Zagreb, Faculty of Science). References Checa, A.G. et al. 2019. Royal Society Open Science 6, doi: http://dx.doi.org/10.1098/rsos.190458 Kochansky, V. 1944. Geološki vjesnik Hrvatskog državnog geološkog zavoda I Hrvatskog državnog Geološkog Muzeja 2 Sremac, J. et al. 2015. Rudarsko-geološko-naftni Zbornik 31(1), doi: http://dx.doi.org/10.17794/rgn.2016.1.2 Vadlja, D. 2018. University of Zagreb, Graduate thesis 75 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Barbara Studencka Polish Academy of Sciences, Museum of the Earth in Warsaw, Warsaw, Poland, bstudencka@go2.pl Pectinidae and Cardiidae from the middle Miocene of Poland – witnesses of environmental changes in the Paratethys The Middle Miocene (Badenian–Early Sarmatian) in the Fore-Carpathian basins compared to the Inner is a time of significant climatic and paleogeographic Carpathian basins of the Central Paratethys during the changes in the Central Paratethys, a vast inland sea MMCT. From among 18 scallop species found in the composed of several interconnected water bodies. Af- upper Badenian deposits in Poland, the majority are ter the Middle Miocene Climatic Optimum (MMCO) remnants of the early Badenian fauna; only Propeamus-lasting until 14.7 Ma and the Middle Miocene Climat- sium felsineum, Parvamussium fenestratum and Palliolum bit-ic Transition phase (MMCT), about 13.82 Ma, the tneri [= Chlamys elini], invaded the Fore-Carpathian Ba-temperature decreased significantly, which may have sin in the late Badenian. The appearance of the latter caused the regional extinction of most thermophilic species in the Paratethyan Province is recognized as organisms. Moreover, around 12.65 Ma there was a a distinct marker for reliable correlation of the up-faunal crisis, called the Baden-Sarmatian Extinction permost Badenian and Konkian. None of the scallop Event (BSEE), which marks the Badenian/Sarmatian species, like other marine stenohaline species, survived border. The reasons for this sudden decline in bio- the environmental changes as a result of which the late diversity should be seen not only in the interruption Badenian basin was transformed into a highly isolat-of the connection of the Central Paratethys with the ed early Sarmatian basin with significant fluctuations Mediterranean area around 12.65 Ma, but also in the in the salinity level (30–18‰), decreasing towards the creation of wide connections with the almost three east (Studencka and Jasionowski, 2011). times larger Eastern Paratethys, whose waters were The Middle Miocene cockles from Poland are less di-characterized by reduced salinity throughout most of versified than the scallops (25 species compared to 30 the Middle Miocene, never reaching 25‰ (Nevesskaja species). During the maximum of the early Badenian et al. 2005; Studencka and Jasionowski 2011). transgression ca 15.1 Ma, which reached the south- Bivalves are among the best recognised fossil inverte- ern slopes of the Holy Cross Mts., 11 cockle species brates occurring in the Middle Miocene strata of the appeared but only six of them survived until the late Central Paratethys. Knowledge of the species compo- Badenian. The occurrence of thermophilic species sition of bivalve assemblages within the Central Para- Procardium danubianum, Procardium kunstleri and Discors tethys is of key importance for the reconstruction of spondyloides is limited only to the early Badenian. Elev-paleoenvironment. To show how bivalves inhabiting en species of cockles have been detected in the upper the Fore-Carpathian Basin, being in the Middle Mio- Badenian strata of Poland. A characteristic feature of cene the northernmost part of the Central Paratethys, the early Sarmatian assemblages is high frequency of responded to the above changes, the species compo- the subfamily Lymnocardiinae, represented by three sition of two families was analysed: Pectinidae (scal- endemic genera – Inaequicostata, Plicatiforma and lops), and Cardiidae (cockles). Obsoletiforma. In the Sarmatian sediments of Poland, 76 The hitherto study revealed 30 scallop species in both the presence of 10 cockle species was documented, the lower and upper Badenian sandy and carbonate two of which, Plicatiforma praeplicata and Obsoletiforma deposits from Poland. The occurrence of 12 spe- vindobonense, are common in the Badenian fauna. cies is restricted to the lower Badenian. The lack of The taxonomic composition of both studied families thermophilic scallops such as Cristatopecten cristatum reflects, in a model way, the response of bivalves to badense, Cristatopecten spinulosus attenuatus, Gigantopecten environmental changes in the Middle Miocene of the nodosiformis, Austrohinnites brusson i and Aequipecten oper- Central Paratethys, but is not dependent on the type cularis in the late Badenian assemblages from Poland of bottom they inhabit. is related to a significant progressive cooling of waters Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References Nevesskaja L.A. et al. 2005. Types of Neogene marine and nonmarine basins exemplified by the Eastern Paratethys. Paleontological Journal, 39/3 Studencka, B., Jasionowski, M. 2011. Acta Geologica Polonica 61/1, https://geojournals.pgi.gov.pl/agp/article/ view/9759 77 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Michal Šujan1,2, Kishan Aherwar1, Régis Braucher 3, Andrej Chyba4, Katarína Šarinová5, Tomáš Vlček1, Arjan de Leeuw6, Anton Matoshko7, Alessandro Amorosi8, Bruno Campo8, Imre Magyar9,10, Orsolya Sztanó10, Krisztina Sebe9, Bronislava Lalinská-Voleková11, Anita Grizelj1,2, Barbara Rózsová1, Aster Team2 1 Department of Geology and Paleontology, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia, michal.sujan@uniba.sk 2 Laboratory of Quaternary Research, Nature Research Centre, Vilnius, Lithuania 3 CNRS-IRD-Collège de France-INRAE, CEREGE, Aix-en-Provence, France 4 Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia 5 Department of Mineralogy, Petrology and Economic Geology, Faculty of Natural Sciences, Comenius University in Bratislava, Slovakia 6 Institut des Sciences de la terre (ISTerre), University Grenoble Alps, Grenoble, France 7 Palaeomagnetic Laboratory ‘Fort Hoofddijk’, Department of Earth Sciences, Utrecht University, Utrecht, Netherlands 8 Department of Biological, Geological and Environmental Sciences, University of Bologna, Via Zamboni 67, 40126 Bologna, Italy 9 ELKH-MTM-ELTE Research Group for Paleontology, Budapest, Hungary 10 Department of Geology, Eötvös Loránd University, Budapest, Hungary 11 SNM-Natural History Museum, Bratislava, Slovakia 12 Croatian Geological Survey, Zagreb, Croatia Suitability of the authigenic 10Be/9Be dating method for epicontinental basin sequences: A sedimentological and sequence-stratigraphic perspective Establishing robust geochronological models for epi- eoenvironmental variability of isotopic initial ratios, continental basins poses a notoriously difficult prob- a factor that has not been thoroughly investigated in lem due to several characteristics. The variability in previous research. The ongoing project undertaken connectivity of such basins to the World Ocean leads by the authors provides insight into how depositional to frequent salinity changes and the extinction or en- processes and the sequence-stratigraphic context of a demism of planktonic taxa, complicating the appli- sampled succession affect the beryllium isotopic var-cation of biostratigraphy. Complex variations in base iability and the reliability of the obtained age models. level and phases of subaerial deposition not only trig- The presented assumptions are based on case studies ger sediment bypass or erosional events but also con- from Upper Miocene to Quaternary successions from tribute to the incompleteness of the depositional re- the Pannonian Basin and Dacian Basin, as well as Hol-78 cord. The utilization of the authigenic 10Be/9Be dating ocene deltaic parasequences of the Po Plain. method, which requires only a few grams of clay sedi- The obtained results suggest that the stability of ter-ment as a dating sample, may offer a robust geochron- restrial 9Be delivery to the environment is one of the ological tool for epicontinental basins. This method crucial conditions to be met. Another important factor is based on the ratio of atmospheric cosmogenic 10Be is a stable accommodation rate, which enables relative-delivered by precipitation and stable 9Be provided to ly rapid sediment burial without post-deposi the sedimentary environment from rock weathering. The different origins of these nuclides result in pal- Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe References Deng, K. et al. 2023. Science Advances 9(23), doi: https://doi.org 10.1126/sciadv.adg3702 Šujan, M. et al. 2023. Palaeogeography, Palaeoclimatology, Palaeoecology 628, doi: https://doi.org/10.1016/j.palaeo.2023.111746 Šujan, M. et al. 2023. Journal of Quaternary Science 38, doi: https://doi.org/10.1002/jqs.3482 79 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Robert Šamarija1, Nevena Andrić-Tomašević1, Oleg Mandic2, Katja Mužek3, Armin Zeh1, Davor Pavelić4 1 Institute of Applied Geosciences, Karlsruhe Institute of Technology, Karlsruhe, Germany 2 Geological-Paleontological Department, Natural History Museum Vienna, Vienna, Austria 3 Department of Geology, Croatian Geological Survey, Zagreb, Croatia 4 Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Zagreb, Croatia New insights gained from zircon U-Pb dating of Miocene volcaniclastic deposits of the Sinj Basin (Dinaride Lake System, Croatia) The intramontane basins of the Dinarides hosted a The present study aims to provide new constraints on series of long - lived lakes during the Miocene, collec- the evolution of the Sinj Basin, based on U-Pb zir-tively known as the Dinarides Lake System. Sinj Basin con geochronology. Samples were collected from the is one of the best studied among them, providing valu- Lučane section in the NW part of the basin, Crveni able insights into the paleobiogeographic and paleoen- Klanac area in the SE part and from selected sites in vironmental evolution of the region. Its development its central part, around Glavice. First, the samples were was initiated by a prominent phase of extension which crushed into a fine powder, which was subsequent-affected the whole orogen. However, the timing of the ly washed using a gold pan in order to separate the onset and duration of deposition is still a matter of heavy-mineral fraction. Individual zircon grains were debate, with consequences for tectonic interpretations. handpicked using a binocular microscope. These were The basin infill consists of a lower unit dominated by imaged for typology with a scanning electron micro-marls with coal intercalations and considerable terrige- scope, before being mounted in epoxy resin. Subse-nous input, a middle unit composed of mostly unfos- quently, cathodoluminiscence images were produced siliferous limy marls and marly limestones, and clayey on polished mounts to gain information about inter-carbonates with coal intercalations in the upper unit nal structures. U-Pb isotope analyses were obtained (Šušnjara & Sakač 1988). A chronostratigraphic frame- by means of laser ablationinductively coupled plasma work was initially obtained in the NW part of the ba- mass spectrometry (LA–ICP–MS). sin from paleomagnetic data collected along the 500 The obtained ages ranging between ~18 and ~15 m thick Lučane section, calibrated by bulk Ar-Ar sa- Ma provide new constraints on the timing of initial nidine and biotite dating of intercalated volcaniclastic lacustrine flooding, and together with the previously deposits (de Leeuw et al. 2010). The subsequent U-Pb published literature, will aid in refining the timing of dating of bauxites in the SE part of the basin demon- the Miocene extensional episode. In addition, a wide strated that lacustrine flooding across the Sinj Basin spectrum of detrital zircon ages was obtained, with was diachronous (Brlek et al. 2021). This result was distinct abundance peaks reflecting the pre-Miocene supported by a partial U-Pb re-dating of the Lučane geodynamic history of the Dinarides. This work will section, highlighting the advantage of this dating tech- serve as the basis for future U-Pb dating and correla-80 nique over Ar-Ar dating in diagenetically altered vol- tion of Miocene lacustrine deposits of the Dinarides caniclastic deposits. and Serbian Lake Systems. References Brlek, M. et al. 2021. International Journal of Earth Sciences 110, doi: http://dx.doi.org/10.1007/s00531-021-02091-z de Leeuw, A. et al. 2010. Palaeogeography, Palaeoclimatology, Palaeoecology 292, doi: https://doi.org/10.1016/j. palaeo.2010.03.040 Presentations Šušnjara, A., Sakač, K. 1988. Geološki Vjesnik 41: 51–74 th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Nina Trinajstić1, Mihovil Brlek1, Julie Schindlbeck-Belo2, Simon Richard Tapster3, Steffen Kutterolf2, Radovan Avanić1, Sanja Šuica4, Vlatko Brčić1, Duje Kukoč1, Samuel Rybar5,6, Katarína Šarinová5, Monika Milošević1, Ivan Mišur1 1 Croatian Geological Survey, Zagreb, Croatia, ntrinajstic@hgi-cgs.hr 2 GEOMAR Helmholtz Center for Ocean Research, Kiel, Germany 3 British Geological Survey, Nottingham, United Kingdom 4 INA-Industrija nafte, d.d., Zagreb, Croatia 5 Comenius University in Bratislava, Bratislava, Slovakia 6 Technical University of Ostrava, Ostrava Poruba, Czech Republic Characterizing the ~15.3 Ma explosive eruption: Insights from volcaniclastic deposits across the Pannonian Basin and the Dinarides During the Neogene, repeated explosive eruptions of corded so far in the most complete Early to Middle the Carpathian-Pannonian Region produced regional- Miocene volcaniclastic succession of the Bükkalja Vol-ly spread volcaniclastic deposits. The volcanic record canic Field in northern Hungary. has become obscured due to erosion, tectonic activity, In our study, a multi-proxy approach is applied to new-ongoing magmatism, and the deposition of younger ly discovered and well-preserved Mt. Požeška gora sedimentary layers. To fully uncover the volcanic his- volcaniclastic succession, as well as on three additional tory of the source region, specifically the frequency volcaniclastic horizons variously distanced from Mt. and spatial distribution of individual volcanic events, a Požeška Gora site (~100–300 km), to evaluate their comprehensive approach is necessary. This approach correlativity. should integrate fieldwork and various analytical tech- niques, applied to both proximal and distal records. To Our study demonstrates that by utilizing data from the fully uncover the volcanic history of the source region, geochemistry of volcanic glass and minerals, alongside specifically the frequency and spatial distribution of in- zircon petrochronology, we can establish a correlation dividual volcanic events, a comprehensive approach is between the volcaniclastic horizon of Mt. Požeška necessary. Gora and volcaniclastic deposits from Kuchyňa (Vien- na Basin), Lučani (Sinj Basin), and Čučerje (Mt. Medv- At Mt. Požeška gora (SW Pannonian Basin), a ~15.3 ednica) localities. Ma primary volcaniclastic record was previously recog- nized (Brlek et al., 2020), and tentatively correlated with These deposits are linked to a single eruption around other regionally spread contemporaneous volcaniclas- 15.3 Ma from an as-yet unidentified source within the tic horizons from the Vienna Basin (Rybar et al. , 2019), region. This newly established correlation positions the the North Alpine Foreland Basin (Rocholl et al., 2018), ~15.3 Ma volcaniclastic deposits as valuable marker as well as the Dinaride Lake System (de Leeuw et al., beds for Neogene stratigraphy across the broader Pan-2012). Coeval volcaniclastic deposits have not been re- nonian Basin area. 81 This work is supported by the Croatian Science Foundation through project „Miocene syn-rift evolution of the North Croatian Basin (Carpathian-Pannonian Region): a multi-proxy approach, correlation and integration of sedimentary and volcanic record“(PYROSKA), (UIP-2019-04-7761). References Brlek, M. et al. 2020. International Journal of Earth Sciences 109, doi: https://doi.org/10.1007/s00531-020-01927-4 Rocholl, A. et al. 2018. International Journal of Earth Sciences 107, doi: https://doi.org/10.1007/s00531-017-1499-0 Rybar, et al. 2019. Geologica Carpathica 70(5), doi: https://doi.org/10.2478/geoca-2019-0022 de Leeuw, A. et al. 2012. Tectonophysics 530, doi: http://dx.doi.org/10.1016/j.tecto.2012.01.004 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Davit Vasilyan1,2, Sergej Lazarev2,1, Oleg Mandic3, Marius Stoica4, Damien Becker1,2, Michal Šujan5, Andrian Delinschi6 1 Jurassica Museum, Porrentruy, Switzerland, davit.vasilyan@jurassica.ch 2 Department of Geoscience, University of Fribourg, Fribourg, Switzerland 3 Natural History Museum Vienna, Vienna, Austria 4 Bucharest University, Faculty of Geology and Geophysics, Department of Geology, Bucharest, Romania 5 Department of Geology and Paleontology, Faculty of Natural Sciences, Bratislava, Slovakia 6 Department of Natural Sciences, National Museum of Ethnography and Natural History of Moldova, Chişinãu, Republic of Moldova New updates on the Late Miocene land vertebrate faunas from the north of the Eastern Paratethys The Late Miocene record of the continental vertebrates cluded in Lungu and Rzebik-Kowalska (2011)). Thanks has a rich record in the north of the Eastern Parateth- to our new field observations and sampling, we have ys. The territories of Romania, Moldova, Ukraine and able to redescribed the sections and resampled for fur-Southern Russia provide with continental and partially ther analyses and studies. For more than ten sites of marine deposits which contain also horizons of bone Bessarabian to Maeotian ages, a broad range of prox-remains including all vertebrate groups. Age of these ies such as sedimentological description, relative dat-deposits have been largely dated by previous extensive ing (magnetostratigraphy, micropaleontology, mollusc studies from Sarmatian s.l. to Maeotian. In most cas- biostratigraphy, cosmogenic nuclides), and vertebrate es, the ages of sites are poorly constrained, making paleontology has been applied. the paleobiogeographic, -geographic, -environmental, The sections represent mostly fluvial deposits of the and -climatic reconstructions and analyses in time and Balta Formation but they included also deposits from space extremaly difficult and vague. the shore and/or deltaic envirnments. These sediments Our new study aims to reassess the ages of the known provided mostly vertebrate assemblages. Mammalian sites and document new sites with vertebrate faunas biochronology and biostratigraphy of marine groups using a multidisciplinary approach. Our field studies, have been used to correlate the superpositions of the we could not confidently relocate the earlier known sites and faunas. Amphibian and reptilian assemblage sections and fossiliferous horizons (mostly those in- allowed to reconstruct the paleoprecipitation values. 82 The study has been supported by the Swiss National Science Foundation project Nr. 200021_197323. References Lungu, A., Rzebik-Kowalska, B., 2011. Faunal assemblages, stratigraphy and taphonomy of the Late Miocene locali-Presentations ties in the Republic of Moldova. Polish Academy of Sciences, Krakow th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Davor Vrsaljko1, Vlasta Premec Fućek2, Valentina Hajek-Tadesse3, Mario Matošević2 1 Croatian Natural History Museum, Zagreb, Croatia 2 INA d.d. Industrija nafte, Zagreb, Croatia 3 Croatian Geological Survey, Zagreb, Croatia Biostratigraphy and paleoecology of the middle Miocene deposits of Dilj gora Mt. (NE Croatia), Central Paratethys The Middle Miocene sediments in NE Croatia, located quadratus, Trilobatus trilobus, and T. immaturus. Abundant within the North Croatian Basin (NCB) and paleogeo- species are Tenuitella angustiumbilicata, T. munda and Glo-graphically affiliated with the southern margin of the bigerinoides obliquus. Trilobatus bisphaericus, Globigerinoides Central Paratethys, were examined for their micropal- bolii, Trilobatus sacculifer, Globigerinita glutinata, and others eontological and petrographic characteristics. A sedi- are low-abundant species. Rare occurrences have Trilo-ment sample from Degman Hill on Dilj gora Mt. (point batus sicanus and Globigerinella obesa. Benthic foraminif-DV256) revealed a diverse microfossil assemblage, en- eral assemblage with a total of 25 taxa is moderately compassing pteropods, foraminifera, ostracods, fish diverse. Siphonodosaria consobrina, S. script a, Melonis pom-teeth, sponge spicules, and echinoderm fragments. pilioides, and Hansenica soldanii are highly abundant spe-The sediment consists of fossiliferous silty marl, exhib- cies. The abundant species is Uvigerina grilli, whereas a iting a predominantly homogeneous texture occasion- low abundance has Lenticulina inornata, Plectofrondicularia ally enriched with organic matter. Mineral composition sp., Neugeborina longiscata, Fontbotia wuellerstorfi, Buchneri-analysis identified quartz, feldspars, and phyllosilicates ana buchneri and Guttulina communis. The plankton ben- (mainly muscovite, sericite, and chlorite) alongside car- thos ratio is 90:10. bonate fragments embedded within a prevalent clay- Overall, 15 ostracod taxa of deep-marine, mostly in-ey-carbonate matrix. Planktonic bioclasts are abun- fra-neritic and bathyal species, and the shallow-water dant, while benthic forms occur sporadically. species were present in the sample. Bythocypris lucida, Pteropods, planktonic gastropods from the family Krithe sp., Cytherella cf. vulgat a, and Argilloecia sp. have Cavoliniidae, colloquially termed “sea angels” or “sea rare occurrences, while species Aurila cf. punctata, Au-butterflies,” were classified into three morphotypes. rila sp., Butonia dartonensis, Cytheropteron sp., Eucytherura Morphotype A, previously identified on Medvednica sp., Grinionesis haidingeri, Calistocythere cf. karpatiensis, Mt., belongs to the genus Vaginella (aff. V. austriaca Leptocythere sp., Neocytherideis cf. linearis, Paracytherois sp., Kittl) (Bošnjak et al., 2017). Morphotypes B and C Saida sp., and Semycytherura sp., have very few. likely represent new species and a new genus. These Rich assemblages of siliceous sponge spicules that be-gastropods typically exhibit 5-8 mm in length and 4-6 long to different families are also found in the sample. mm in width, appearing as flattened tests in carbonate The composition of the assemblage and the common coatings, molds, and impressions in the sediments. co-occurrence of the Trilobatus bisphaericus and T rilo-The planktonic foraminiferal assemblage includes 19 batus sicanus are characteristic of the planktonic fo-species. Highly abundant species are Globigerinoides sub- raminiferal MMi4a Zone (Lirer et al., 2019) and M5b 83 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Zone (Raffi et al., 2020) which correspond to lower Badenenian. Most of the determined ostracod species are known from the lower Badenian deposits of the NCB, and seven species from our sample are known from the Karpatian of Central Paratethys (Zorn, 2003). The assemblages of siliceous sponge spicules are similar to those described from the Karpatian of the Carpathian Foredeep in Moravia (Pisera and Hladilova, 2003). This rich and diverse lower Badenian microfossil as- semblage, typical of warm to subtropical seas, implies an open connection of the southern margin of the Central Paratethys with the Mediterranean and, thus, indirectly with the Indian Ocean. Petrographic analysis of the marl and a very high percentage of the plank- tonic foraminifera indicate sediment deposition within a deeper marine environment, with occasional fine- grained detritus from land. Warm-water-preferred planktonic gastropods and spinose planktonic foraminifera, such as Trilobatus and Globigerinoides, indicate a warm sea surface and well-stratified water column. However, the benthic foraminiferal fauna dominated by infaunal species ( Sipho- nodosaria, Melonis, Hansenica, Uvigerina) suggests a low oxygen microhabitat but rich in organic matter and cool bottom water. 84 References Bošnjak, M. et al. 2017. Geologica Carpathica 68(4), doi: https://doi.org/10.1515/geoca-2017-0023 Lirer, F. et al. 2019. Earth-Science Reviews 196, doi: https://doi.org/10.1016/j.earscirev.2019.05.013 Pisera A., Hladilová Š. 2003. Masaryk University, Brno Raffi, I. et al. 2020. Geologic Time Scale, doi: https://doi.org/10.1016/B978-0-12-824360-2.00029-2 Zorn, I. 2003. The Masaryk University, Brno, https://www.muni.cz/en/research/publications/562213 Presentations th 10 International Workshop NCSEE Neogene of Central and South-Eastern Europe Adam Tomašových1, Ines Galović2, Natália Hudáčková N.3, Matúš Hyžný3, Andrej Ruman3, Samuel Rybár3, Ján Schlögl3, Vladimír Šimo1 1Earth Science Institute, Slovak Academy of Sciences, Bratislava, Slovakia, geoltoma@savba.sk 2Croatian Geological Survey, Zagreb, Croatia 3Department of Geology and Paleontology, Comenius University, Bratislava, Slovakia Assessing the preservation of spatangoid echinoids in hypoxic environments (Vienna Basin, Miocene, Central Paratethys) Exceptional preservation of macrobenthic inverte- that (1) burial of echinoids below the mixed layer was brates with articulated remains is frequently explained induced by terrigenous particles settling from suspen-by episodic rapid burial events or by onset of anoxia. sion and by diatom blooms and dumps rapidly export-Here, we assess whether macrobenthic assemblag- ed to the seafloor rather than by their sudden burial es dominated by the shallow-burrowing spatangoid by thicker event deposits, (2) sediment mixing rate echinoid Lovenia that inhabited bathyal environments was slow and patchy as the diatomaceous mats were during the Early Miocene and are preserved in the not eliminated by echinoid and crustacean burrows so-called Schlier-type sediments in the Vienna Basin (Scolicia and Thalassinoides), and (3) high frequencies conform to these scenarios. Echinoids occur in three of complete tests and test fragments with spines or taphofacies types that are compositionally similar but with dislocated plates indicate that disarticulation and differ in preservation, size, and species diversity, in- fragmentation rates in sediment or at the sediment-wa-cluding (1) dispersed or clustered, frequently complete ter interface were very slow. Echinoid concentrations echinoid tests occurring in homogeneous or partial- in pavements probably reflect primary aggregations ly-laminated diatomaceous clays, (2) pavements with that were only later modulated by winnowing as the densely-packed echinoid tests that form pavements homogeneous or partially-laminated taphofacies are capped by mm-thick sands, with intermediate frequen- shell-poor but compositionally do not differ from cy of intact tests with spines, and (3) cm-thick sandy pavements. Hypoxia and fast sediment accumulation skeletal lags formed by well-sorted echinoid test and of Schlier-type deposits driven by suspension-fallout plate fragments. Echinoid tests are best preserved in of diatoms and clastic sediment thus led to an unu-the homogeneous taphofacies with high abundance sual census-like preservation of weakly time-averaged of hypoxia-tolerant benthic foraminifers and with ves- assemblages (contrasting with complex preservation tiges of lamination formed by Thalassionema or Co- pathways of fossil assemblages in well-oxygenated en-scinodiscus-dominated diatom assemblages, indicating vironments subjected to bioturbation). 85 Presentations