The Cretaceous–Paleogene Boundary in the Shapsug Section (Southern Slope of the Northwestern Caucasus)

IF 0.7 4区地球科学 Q4 PALEONTOLOGY

Paleontological Journal Pub Date : 2024-04-16 DOI:10.1134/s0031030123600270

D. V. Kochergin, N. V. Granovskaya

引用次数: 0

Abstract

A silicite horizon corresponding to the global catastrophic event at the Cretaceous–Paleogene boundary was found for the first time in the flysch sequence of the Shapsug section on the southern slope of the Northwest Caucasus. Assemblages of radiolarians and planktonic foraminifers dating the host beds were identified. Mineralogical and analytical data support the presence of tectites, impact minerals, and increased iridium content in the boundary bed of the studied section.

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沙普苏格地段（西北高加索南坡）的白垩纪-古近纪界线

摘要在西北高加索南坡沙普苏格剖面的萤石层中首次发现了与白垩纪-古近纪边界全球灾难性事件相对应的硅酸盐层。对放射虫和浮游有孔虫的组合进行了鉴定，确定了寄主床的年代。矿物学和分析数据证明，在所研究地段的边界岩床中存在构造岩、冲击矿物以及铱含量的增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Paleontological Journal 地学-古生物学

CiteScore

1.20

自引率

33.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Paleontological Journal (Paleontologicheskii zhurnal) is the principal Russian periodical in paleontology. The journal publishes original work on the anatomy, morphology, and taxonomy of fossil organisms, as well as their distribution, ecology, and origin. It also publishes studies on the evolution of organisms, ecosystems, and the biosphere and provides invaluable information on global biostratigraphy with an emphasis on Eastern Europe and Asia.