Distribution of Miogypsinoides in the Zagros Basin, in southwest Iran

被引：11

作者：

Amirshahkarami, Mahnaz ^{[1
]}

机构：

[1] PNU, Dept Geol, Fac Sci, Wazvan, Esfahan, Iran

来源：

HISTORICAL BIOLOGY | 2008年 / 20卷 / 03期

关键词：

Miogypsinoides complanatus; Miogypsinoides formosensis; Miogypsinoides dehaartii; Chattian; Aquitanian; stratigraphy; Zagros Basin; Iran;

D O I：

10.1080/08912960802516893

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In the present study three species of Miogypsinoides are described from the Oligocene-Miocene Asmari Formation of the Zagros Basin in the southwest of Iran. This is the explanation of the morphological recognition and distribution of Miogypsinoides complanatus, Miogypsinoides formosensis (Upper Oligocene, Chattian) and Miogypsinoides dehaartii (Lower Miocene, Aquitanian). Nepionic acceleration is the most important factor for recognition of Miogypsinoides species. Also it is applied in stratigraphic correlation. Examination of samples indicates a decreasing number of nepionic chambers (Mx) as time passes so M. dehaartii with Mx < 10 belong to the Aquitanian age. The study of microfacies shows that these species lived in an open marine environment with normal salinity and medium hydraulic energy in a middle ramp position.

引用

页码：175 / 184

页数：10

共 37 条

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Adams C.G., 1967, 1074 IR OIL OFFSH CO

[2]

Amirshahkarami M, 2007, THESIS ESFAHAN U IRA, P148

[3] Sedimentary facies and sequence stratigraphy of the Asmari Formation at Chaman-Bolbol, Zagros Basin, Iran [J].