The boundary of the Turonian and Coniacian of the North-Western Caucasus-Reference-Cited by-同舟云学术

The boundary of the Turonian and Coniacian of the North-Western Caucasus

Published:2022-12-15 Issue:4 Volume: Page:34-42
ISSN:0579-9406
Container-title:Moscow University Bulletin. Series 4. Geology
language:
Short-container-title:Vestnik Moskovskogo universiteta. Seriâ 4, Geologiâ

Author:

Yakovishina E. V.¹,Bordunov S. I.²,Kopaevich L. F.¹,Krasnova E. A.¹,Netreba D. A.¹

Affiliation:

1. Lomonosov Moscow State University

2. Lomonosov Moscow State University; Geological Institute RAS

Abstract

The results of a comprehensive study of the boundaries of the Turonian-Coniacian in the Upper Cretaceous deposits of the Abinsky region of the North-Western Caucasus, composed of rhythmically constructed carbonate strata of the hemipelagic type, are presented. Biostratigraphic analysis of foraminifera complexes made it possible to identify zones in the section that are comparable to those proposed for the Point of the Global Stratotype of the boundary of the Coniacian in Germany. On the basis of chemostratigraphic (isotopic) studies, the levels of abiotic events traced in the section and other territories have been established. The Shapsug section, after further study, can be proposed as a possible Hypostratotype (Limitotype) of the Turon-Coniacian boundary for the territory of the Russian Federation.

Publisher

Faculty of Geology Lomonosov Moscow State University

Subject

General Earth and Planetary Sciences,General Environmental Science

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