Lectostratotype of the Maikopian Group in the Belaya River Section Upstream of the Town of Maikop (Western Ciscaucasia) in the Oligocene Part


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The section of Maikop deposits on the Belaya River upstream of the town of Maikop is characteristic of Western and Central Ciscaucasia; it is well exposed and well-studied and can be considered as the type section of the Maikop Group. The section shows a continuous transition from the underlying white marl of the Belaya Glina Formation to dark clay lying at the base of the Maikop Group. The lower Oligocene part of the section exposes an almost uninterrupted outcrop of the Pshekha Formation and shows unconformities at the base and top of the Polbian Bed. These are overlain by the lower non-carbonate and upper carbonate subformations of the Morozkina Balka Formation and the Batalpashinsk and undivided Upper Oligocene Septarian + Zelenchuk formations. This paper contains a detailed lithological description of the section with a summary of its fossils. The composition of the studied microphytoplankton and animal remains, including nannoplankton, planktonic and benthic foraminifers, mollusks, and ichthyofauna is described and paleomagnetic study results are presented. The study of palynology and dinocysts from the same series of samples was previously completed. The history of the study of the Maikop Group and its subdivision into formations are discussed. This paper discusses the possibility of using the data for correlation and reconstruction of the depositional environment.

作者简介

S. Popov

Borissiak Paleontological Institute, Russian Academy of Sciences

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Email: serg.pop@mail.ru
俄罗斯联邦, Moscow, 117647

I. Tabachnikova

All-Russia Geological Institute (VSEGEI)

Email: serg.pop@mail.ru
俄罗斯联邦, St. Petersburg, 199106

A. Bannikov

Borissiak Paleontological Institute, Russian Academy of Sciences

Email: serg.pop@mail.ru
俄罗斯联邦, Moscow, 117647

E. Sytchevskaya

Borissiak Paleontological Institute, Russian Academy of Sciences

Email: serg.pop@mail.ru
俄罗斯联邦, Moscow, 117647

T. Pinchuk

Kuban State University

Email: serg.pop@mail.ru
俄罗斯联邦, Krasnodar, 350040

M. Akhmet’ev

Geological Institute, Russian Academy of Sciences

Email: serg.pop@mail.ru
俄罗斯联邦, Moscow, 119017

N. Zaporozhets

Geological Institute, Russian Academy of Sciences

Email: serg.pop@mail.ru
俄罗斯联邦, Moscow, 119017

A. van der Boon

Paleomagnetic Laboratory of Utrecht University

Email: serg.pop@mail.ru
荷兰, Utrecht, 3584 CD

W. Krijgsman

Paleomagnetic Laboratory of Utrecht University

Email: serg.pop@mail.ru
荷兰, Utrecht, 3584 CD

A. Stolyarov

Fedorovsky All-Russian Scientific Research Institute of Mineral Resources (VIMS)

Email: serg.pop@mail.ru
俄罗斯联邦, Moscow, 119017

J. Krhovsky

Ministry of the Environment of the Czech Republic

Email: serg.pop@mail.ru
捷克共和国, Prague 10, 100

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