The Paleogeography of the Formation of the Eocene Nummulitic Bank in Southwestern Crimea According to Lithological and Paleontological Data

IF 0.3 Q4 GEOLOGY
E. A. Lygina, E. R. Chizhova, N. V. Pravikova, E. A. Ovchinnikova
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Abstract

The results of a comprehensive study of the Lower–Upper Ypresian boundary sediments at the Suvlu-Kaya Mountain section (Bakhchisarai region, Southwestern Crimea) are presented. The evolution of formation of the nummulitic bank in the study area is shown based on a detailed microfacies analysis. The sediments were formed on a deep shelf with depths at and below the storm wave base. It has been established that the Ypresian transgression was developed gradually, in three stages, with the maximum at the end of the Early Ypresian, and then was followed by a long-term regression. The data are confirmed by the results of the micropaleontological analysis of the morphogroups.

Abstract Image

根据岩石学和古生物学数据研究克里米亚西南部始新世沼泽滩的古地理形成
摘要介绍了对苏夫鲁-卡亚山地段(克里米亚西南部巴赫奇萨拉伊地区)下-上伊普雷期边界沉积物的综合研究结果。根据详细的微岩相分析,展示了该研究区域楠木岩岸的形成演变过程。这些沉积物形成于深海大陆架上,深度在风暴潮基底及以下。研究证实,伊普雷期的横断是逐渐形成的,分为三个阶段,在早伊普雷期末期达到最大,随后是长期的回归。形态群的微古生物学分析结果证实了这些数据。
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来源期刊
CiteScore
0.60
自引率
25.00%
发文量
43
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.
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