Abstract

The results of microfaunistic (benthic foraminifers) and magnetostratigraphic (paleomagnetic and petromagnetic) studies obtained in the lower part of the Upper Cretaceous deposits of the Kommunar section are presented. On the basis of the study of benthic foraminifers, the section consists of middle and upper Turonian, Coniacian, lower and upper Santonian, and basal horizon of the lower Campanian. In addition, all Coniacian zones and subzones of the East European Platform have been established. These data confirm the importance of the Kommunar section as a stratotype of the Volsk Formation (Coniacian of the Middle and Lower Volga region). In the Kommunar section, the Turonian and Coniacian are characterized by a normal polarity, and the Santonian and lower Campanian are characterized by a reversed polarity.

中文翻译：

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东欧地台 Volsk 构造带上白垩统沉积物：Kommunar 剖面的 Turonian-Lower Campanian：论文 1. 地质环境、底栖有孔虫和磁地层学

摘要

介绍了在 Kommunar 剖面的上白垩统沉积物下部获得的微动物学（底栖有孔虫）和磁地层学（古地磁和岩磁）研究的结果。在对底栖有孔虫研究的基础上，该剖面由图隆中上层、科尼亚西层、桑托层下上层、坎潘层下层基底层组成。此外，东欧平台的所有科尼亚克亚带和子带均已建立。这些数据证实了 Kommunar 剖面作为 Volsk 组（伏尔加中下游地区的科尼亚克阶）层型的重要性。在 Kommunar 剖面，Turonian 和 Coniacian 的特点是极性正常，而 Santonian 和下坎帕尼亚的特点是极性相反。