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Full-Text Articles in Physical Sciences and Mathematics
Upper Cretaceous - Lowermost Miocene Lithostratigraphic Units Exposed In Alba Iulia-Sebes-Vintu De Jos Area (Sw Transylvanian Basin), Vlad Codrea, Emanuel Paul Dica
Upper Cretaceous - Lowermost Miocene Lithostratigraphic Units Exposed In Alba Iulia-Sebes-Vintu De Jos Area (Sw Transylvanian Basin), Vlad Codrea, Emanuel Paul Dica
Studia UBB Geologia
A main area where several Uppermost Cretaceous-Lower Cenozoic formations are exposed in the SW Transylvanian Depression is the region outlined by the localities Alba Iulia, Sebeş, Vinţu de Jos (Alba district). In Maastrichtian, continental formations belonging to the post-Laramian cover began their deposition. In Early Cenozoic, the dominance of continental formations continued, but some short marine transgress events occur too, with specific marine and brackish deposits interbedded into the continental successions. Some new lithostratigraphic units are proposed: Vurpăr (Maastrichtian), Şard (Maastrichtian-Late Eocene), Bărăbanţ (Oligocene) and Sântimbru (Aquitanian) formations. Ighiu Fm. (Late Eocene-Early Oligocene) is also reinterpreted. This region is an …
Wielician Foraminifera At The Western Border Of The Transylvanian Basin, Sorin Filipescu
Wielician Foraminifera At The Western Border Of The Transylvanian Basin, Sorin Filipescu
Studia UBB Geologia
Marine Middle Miocene deposits at the top of Gârbova de Sus Formation preserve a particular foraminifera assemblage, with both benthic and planktonic taxa. Presence of several biostratigraphic significant species allowed an extension of the known age of the formation, up to Wielician. The morphogroups also suggest a deeper environment, compared to the rest of the formation. The change of fauna type at this level might be correlated to the start of a new global cycle.
Badenian (Middle Miocene) Calcareous Nannofossils From Paglisa (Cluj District): Biostratigraphical Importance, Carmen Chira, Erika Szabo, Constantin Ianoliu
Badenian (Middle Miocene) Calcareous Nannofossils From Paglisa (Cluj District): Biostratigraphical Importance, Carmen Chira, Erika Szabo, Constantin Ianoliu
Studia UBB Geologia
The calcareous nannofossils from the Middle Miocene (Badenian) formations from Pâglişa (Cluj district) are typical for the Lower and Middle Badenian, respectivelly Moravian and Wielician (or Langhian). The detailed study of the calcareous nannofossils from the Pâglişa section revealed the presence of the nannoplankton assemblages belonging to the NN5 and NN6 zones. They have been remarked 40 species of calcareous nannofossils. There are mentioned especially the most representative species and their biostratigraphical significance.