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Turonian–Coniacian Deposits of the Kamennyi Brod-1 Section (Southern Ulyanovsk-Saratov Trough)
Stratigraphy and Geological Correlation ( IF 1.0 ) Pub Date : 2020-02-03 , DOI: 10.1134/s0869593819070025 E. M. Pervushov , I. P. Ryabov , A. Yu. Guzhikov , V. S. Vishnevskaya , L. F. Kopaevich , A. A. Guzhikova , E. A. Kalyakin , V. A. Fomin , V. B. Sel’tser , E. I. Il’inskii , G. V. Mirantsev , P. A. Proshina
中文翻译:
Kamennyi Brod-1断层(南部乌里扬诺夫斯克-萨拉托夫海槽)的Turonian-Coniacian矿床
更新日期:2020-02-03
Stratigraphy and Geological Correlation ( IF 1.0 ) Pub Date : 2020-02-03 , DOI: 10.1134/s0869593819070025 E. M. Pervushov , I. P. Ryabov , A. Yu. Guzhikov , V. S. Vishnevskaya , L. F. Kopaevich , A. A. Guzhikova , E. A. Kalyakin , V. A. Fomin , V. B. Sel’tser , E. I. Il’inskii , G. V. Mirantsev , P. A. Proshina
Abstract
The most stratigraphically representative section of Turonian–Coniacian in the right-bank part of the Volga region is found at the Kamennyi Brod-1 section (Olkhovka district of Volgograd oblast). The subdivision of carbonate rocks into zones is based on the complexes of benthic foraminifera and other accompanying groups of invertebrates. Regressive-transgressive tendencies in the evolution of the Turonian–Coniacian basin is also reflected in the quantitative ratio between benthic and planktonic foraminifera. The earlier unknown representatives of Turonian and Coniacian marine biota are revealed: silicon sponges, crinoids, starfish, brittle stars, and brachiopods. The magnetostratigraphic (magnetopolar and petromagnetic) characteristic of the section is obtained, and the magnetic zone of anomalous polarity is revealed against the background of normal polarity (N). It is supposed that anomalous directions of magnetization represent the stabilized vector sum of oppositely directed components, one of which (corresponding to reverse polarity) is the primary one.中文翻译:
Kamennyi Brod-1断层(南部乌里扬诺夫斯克-萨拉托夫海槽)的Turonian-Coniacian矿床