埃及法尤姆和贝尼苏夫地区始新世中期钙质超微浮游生物生物地层和古环境新探

IF 1.6 3区地球科学 Q2 GEOLOGY

Rivista Italiana Di Paleontologia E Stratigrafia Pub Date : 2023-05-25 DOI:10.54103/2039-4942/18930

I. Ghandour, R. Bălc, M. Faris, S. Helal, G. Mosa, M. Aljahdali

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引用次数: 0

摘要

本文研究了埃及Gebel Na 'alun (Fayoum地区)和Gebel Homret Shaibun (Beni Suef地区)中始新世Beni Suef组事件层的古环境和生物地层学意义，以及事件层的成因和地层意义。钙质纳米浮游生物地层学表明，两地区贝尼湾组是同步的，所覆盖的层段可能与钙质纳米浮游生物带NP17有关。钙质纳米浮游生物的古环境暗示了贝尼湾组沉积物的沉积处于相对稳定、温和和中营养化的条件下，在Homret shabun剖面的底部出现了短间隔的富营养化。

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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NEW INSIGHT INTO THE MIDDLE EOCENE CALCAREOUS NANNOPLANKTON BIOSTRATIGRAPHY AND PALEOENVIRONMENT FROM FAYOUM AND BENI SUEF AREAS, EGYPT

The present study deals with calcareous nannoplankton paleoenvironmental and biostratigraphic implications as well as the genesis and the stratigraphic significance of an event bed recognized from the middle Eocene Beni Suef Formation in the sections of Gebel Na’alun (Fayoum area) and Gebel Homret Shaibun (Beni Suef area), Egypt. Calcareous nannoplankton biostratigraphy indicates that the Beni Suef Formation in the two areas is synchronous, covering an interval that may be correlated with the calcareous nannoplankton Zone NP17. Paleoenvironmental implications from calcareous nannoplankton suggests deposition of sediments in the Beni Suef Formation under relatively stable, temperate and mesotrophic conditions, with a short interval of eutrophication in the basal part of the Homret Shaibun section.

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来源期刊

Rivista Italiana Di Paleontologia E Stratigrafia 地学-地质学

CiteScore

3.60

自引率

4.30%

发文量

审稿时长

>12 weeks

期刊介绍： The Rivista Italiana di Paleontologia e Stratigrafia was founded in 1895. It publishes original papers dealing with all fields of paleontology and of stratigraphy, from Italy and the Mediterranean to the Tethys, as well across the globe from China to North America.