The Maastrichtian–Danian Boundary Deposits of Central Crimea: New Data on Calcareous Nanoplankton
- 作者: Lygina E.1, Ustinova M.2, Gabdullin R.1, Reentovich A.1
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隶属关系:
- Department of Geology, Moscow State University
- Geological Institute of the Russian Academy of Sciences
- 期: 卷 74, 编号 2 (2019)
- 页面: 185-196
- 栏目: Article
- URL: https://journals.rcsi.science/0145-8752/article/view/174930
- DOI: https://doi.org/10.3103/S0145875219020078
- ID: 174930
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详细
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.
作者简介
E. Lygina
Department of Geology, Moscow State University
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Email: ealygina@mail.ru
俄罗斯联邦, Moscow, 119234
M. Ustinova
Geological Institute of the Russian Academy of Sciences
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Email: masha@ilran.ru
俄罗斯联邦, Moscow, 119017
R. Gabdullin
Department of Geology, Moscow State University
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Email: mosgorsun@rambler.ru
俄罗斯联邦, Moscow, 119234
A. Reentovich
Department of Geology, Moscow State University
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Email: anna.reentovich@mail.ru
俄罗斯联邦, Moscow, 119234