The Maastrichtian–Danian Boundary Deposits of Central Crimea: New Data on Calcareous Nanoplankton
- Autores: Lygina E.1, Ustinova M.2, Gabdullin R.1, Reentovich A.1
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Afiliações:
- Department of Geology, Moscow State University
- Geological Institute of the Russian Academy of Sciences
- Edição: Volume 74, Nº 2 (2019)
- Páginas: 185-196
- Seção: Article
- URL: https://journals.rcsi.science/0145-8752/article/view/174930
- DOI: https://doi.org/10.3103/S0145875219020078
- ID: 174930
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Resumo
This article discusses the structural peculiarities and new data on the distribution of calcareous nanoplankton from Cretaceous–Paleogene boundary deposits of the central area of Piedmont (Predgornyi) Crimea. Both Maastrichtian and Danian rocks contain abundant Cretaceous nanoplankton assemblages. Danian nanoplankton is scarce, characterized by a poor degree of preservation, or even absent. Upper Maastrichtian rocks contain the species Tranolithus orionatus (=Tranolithus phacelosus Stover), which is typical of the Lower Maastrichtian and unknown in the Upper Maastrichtian of the European section; the only reported section of this age containing this species is in southwestern Tunisia. The NP2–NP4 zones are distinguished in the Danian deposits. The paleogeographic problem is also addressed.
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Sobre autores
E. Lygina
Department of Geology, Moscow State University
Autor responsável pela correspondência
Email: ealygina@mail.ru
Rússia, Moscow, 119234
M. Ustinova
Geological Institute of the Russian Academy of Sciences
Autor responsável pela correspondência
Email: masha@ilran.ru
Rússia, Moscow, 119017
R. Gabdullin
Department of Geology, Moscow State University
Autor responsável pela correspondência
Email: mosgorsun@rambler.ru
Rússia, Moscow, 119234
A. Reentovich
Department of Geology, Moscow State University
Autor responsável pela correspondência
Email: anna.reentovich@mail.ru
Rússia, Moscow, 119234