Biostratigraphy of larger foraminifera from the Middle Eocene Jahrum-Pabdeh formations (Zagros region, SW Iran) and their correlation with the planktonic foraminiferal zones

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-01-01 DOI:10.47894/mpal.69.4.05

Seyyed Khalil Forouzande, M. Hadi, M. Vahidinia, L. Consorti, A. Salahi, M. H. M. Gharaie, Ercan Ozcan

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引用次数: 1

Abstract

Eocene larger benthic foraminifera including orthophragmines, nummulitids and alveolinids from the Jahrum and Pabdeh formations in the Zagros region are presented. The studied 20-m-thick stratigraphic interval contains, Asterocyclina Gumbel 1870, Nemkovella Less 1987, Orbitoclypeus Silvestri 1907, Discocyclina Gumbel 1870, Nummulites Lamarck 1801, Assilina d'Orbigny 1826 and Alveolina d'Orbigny 1826. This larger benthic foraminiferal assemblage testifies for the shallow benthic zones (SBZs) 15 to 17, which ranges from the middle Lutetian up to the early Bartonian. Further micropaleontological analysis made on intercalated planktonic-rich levels helps calibrate the larger foraminifera biostratigraphy, demonstrating a correlation with the E11 biozone. This confirms that the chronostratigraphic calibration of the SBZs made by previous authors for the peri-Mediterranean area can, through the middle Lutetian to the early Bartonian, be applicable in the Middle East as well.

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伊朗西南部Zagros地区中始新世Jahrum-Pabdeh组大型有孔虫生物地层学及其与浮游有孔虫带的对比

本文介绍了Zagros地区Jahrum和Pabdeh组始新世大型底栖有孔虫，包括orthophragmines, nummultiids和alveolinids。所研究的20 m厚地层层段包括Asterocyclina Gumbel 1870、Nemkovella Less 1987、Orbitoclypeus Silvestri 1907、Discocyclina Gumbel 1870、Nummulites Lamarck 1801、Assilina d’orbigny 1826和Alveolina d’orbigny 1826。这个较大的底栖有孔虫组合证明了浅底栖带(SBZs) 15至17，范围从中期鲁特世到早期巴尔顿世。在富含浮游生物的插层水平上进行的进一步微体古生物学分析有助于校准较大的有孔虫生物地层，证明了与E11生物带的相关性。这证实了前人对地中海沿岸地区从中鲁特世到早期巴尔顿世的sbz年代学定标同样适用于中东地区。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.