20.500.12556/DiRROS-17798 Upper Triassic–to Lower Cretaceous Slovenian Basin successions in the northern margin of the Sava Folds Zgornjetriasno do spodnjekredno zaporedje Slovenskega bazena iz severnega roba Posavskih gub The evolution of the Slovenian Basin southern margin is currently interpreted based on the successions outcropping in the surroundings of Škofja Loka, on the Ponikve Plateau and in the foothills of the Julian Alps in western Slovenia, as well as from the valley of the Mirna River in south-eastern Slovenia. However, no extensive research on this paleogeographic unit has been carried out in the northern part of the Sava Folds region. Recent field observations permitted the recognition of Upper Triassic to lowermost Cretaceous successions of the Slovenian Basin, including the recently described Middle Jurassic Ponikve Breccia Member of the Tolmin Formation. Based on reambulation-type geological mapping, macroscopic facies observations supported by microfacies analysis and biostratigraphy, three stratigraphic columns were constructed showcasing Slovenian Basin formations on the northern flank of the Trojane Anticline (Sava Folds region). These newly described successions encompass Upper Triassic (Bača Dolomite Formation) and Jurassic–lowermost Cretaceous resedimented limestones and pelagic formations, while the attribution of the Pseudozilian Formation is complex. Based on facies characteristics these successions are similar to those preserved in the Podmelec Nappe (lowermost thrust unit of the Tolmin Nappe) in western Slovenia. The connection between the western and the eastern Slovenian Basin during the Late Triassic-Early Cretaceous interval could be thus recognised. Razvoj južnega obrobja Slovenskega bazena je trenutno poznan na podlagi zaporedij, ki izdanjajo v okolici okrog Škofje Loke, na Ponikvanski planoti in iz predgorja Julijskih Alp v zahodni Sloveniji ter iz doline reke Mirne v jugovzhodni Sloveniji. Nasprotno do sedaj še ni bilo celostne stratigrafske študije globljemorskih zaporedij iz severnega dela Posavskih gub. Tekom nedavnih terenskih raziskav smo na tem območju prepoznali zgornjetriasno do spodnje kredno zaporedje Slovenskega bazena, ki vsebuje tudi nedavno opisan člen Ponikvanske breče Tolminske formacije. Na podlagi reambulacijskega geološkega kartiranja, makroskopskega opazovanja faciesov, katerega smo podprli z mikroskopsko analizo in biostratigrafijo, smo izdelali tri stratigrafske stolpce, ki prikazujejo zaporedje Slovenskega bazena vzdolž severnih obronkov Posavskih gub (Trojanske antiklinale). Novo prepoznano zaporedje vključuje zgornjetriasni Baški dolomit in jurske do spodnjekredne presedimentirane apnence in pelagične sedimente. Faciesne značilnosti kažejo, da ta del Posavskih gub pripada vzhodno nadaljevanje Podmelškega pokrova (spodnje podenote Tolminskega pokrova). S tem je prepoznana povezava med zahodnimi in vzhodnimi zaporedji Slovenskega bazena. Southern Alps Sava Folds Slovenian Basin Jurassic Ponikve Breccia stratigraphy foraminifera Južne Alpe Posavske gube Slovenski bazen Ponikvanska breča stratigrafija foraminifere true false true Geološki zavod Slovenije Angleški jezik Slovenski jezik Neznano 2024-01-15 10:54:49 2024-01-15 10:54:49 2024-01-16 03:40:57 0000-00-00 00:00:00 2023 0 0 str. 205-228 no. 2 vol. 66 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-12-21 551.7 0016-7789 10.5474/geologija.2023.009 179224067 1861-Article_Text-12342481-1-10-20231221.pdf 1861-Article_Text-12342481-1-10-20231221.pdf 1 7307AA535E95E1721224EBFE904CBD58 c2c661134b1ea777520f030f4e5aa99264b90890f532fe88f3851c0331f43c93 103bae15-b38d-11ee-b0d4-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=24157 Geološki zavod Slovenije Geologija 0 0 0