Carboniferous Strata in Maloyaroslavets (Kaluga Region) and Its Biostratigraphy Based on Foraminifers and Conodonts

IF 0.3 Q4 GEOLOGY Moscow University Geology Bulletin Pub Date : 2024-06-05 DOI:10.3103/s0145875224700170

A. S. Alekseev, N. B. Gibshman, N. V. Goreva, K. V. Sakhnenko

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Abstract

The study of a core of borehole 8 drilled in the town of Maloyaroslavets to a depth of 94 m has made it possible to obtain the biostratigraphic characteristics of the Tarusian and Protvian regional substages of the Serpukhovian Stage and lower part of the Vereian Regional Substage of the Moscovian Stage based on foraminifers and conodonts. The Tarusian Regional Substage is attributed to the Neoarchaediscus postrugosus Zone. The Eostaffellina paraprotvae Zone has been established in the Protvian Regional Substage, and a deep-water conodont assemblage of the Gnathodus bollandensis Zone has been found in its upper part (6.8–12.0 m above the base). The generalization of all data on conodonts of the Protvian Regional Substage of the Moscow Syneclise has shown that it contains at least four transgressive–regressive cyclites. The type locality of the species Eostaffellina protvaeensis has been specified in the Tetyuevo section in the Rzhev Volga region. A rich assemblage of conodonts from the Vereian Alyutovo Formation of the Moscovian Stage belongs to the Declinognathodus donetzianus Zone.

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马洛亚罗斯拉维茨（卡卢加地区）石炭纪地层及其基于有孔虫和锥齿动物的生物地层学

摘要通过对在马洛亚罗斯拉韦茨镇钻探到 94 米深处的 8 号钻孔岩芯的研究，可以根据有孔虫和锥齿轮虫获得谢尔普霍夫期塔鲁西亚和普罗特维亚区域亚期以及莫斯科期维埃里亚区域亚期下部的生物地层特征。塔鲁西地区亚段被归属于新古生代（Neoarchaediscus postrugosus）区。Eostaffellina paraprotvae 区被确定为普罗特维亚区域亚台，在其上部（距基底 6.8-12.0 米）发现了 Gnathodus bollandensis 区的深水锥齿轮组合。对莫斯科合成期普罗特维亚地区亚期的所有圆齿动物数据进行归纳后发现，该亚期至少包含四个递变-递变旋回。Eostaffellina protvaeensis 这一物种的模式产地已被确定为伏尔加河热夫地区的 Tetyuevo 断面。莫斯科期的维雷亚阿留托沃地层出土的大量针齿类动物属于Declinognathodus donetzianus区。

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来源期刊

Moscow University Geology Bulletin GEOLOGY-

CiteScore

0.60

自引率

25.00%

发文量

期刊介绍： Moscow University Geology Bulletin is the journal that mainly publishes scientific articles, short reports of graduate students, and reviews. Publications made by the members of the Faculty of Geology of the Moscow State University and their collaborators are published. Publications encompass all branches of geology.