Biostratigraphy and microfacies of the Asmari Formation in north flank of Khami anticline (north of Gachsaran)

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RAHIM ABADI M.; VAZIRI MOGHADDAM H.; SEYRAFIAN A.; SOTOHIAN F.

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Journal: IRANIAN JOURNAL OF PETROLEUM GEOLOGY Year:2019 | Volume:8 | Issue:16 Page(s): 1-25

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Title

Biostratigraphy and microfacies of the Asmari Formation in north flank of Khami anticline (north of Gachsaran)

Author(s)

RAHIM ABADI M. | VAZIRI MOGHADDAM H. | SEYRAFIAN A. | SOTOHIAN F. | Issue Writer Certificate

Keywords

Asmari FormationQ1

Khami anticlineQ1

Oligocene-MioceneQ1

MicrofaciesQ1

Large benthic foraminiferaQ1

Abstract

In the present study, biostratigraphy, Microfacies and sedimentary environment of the Asmari Formation in north flank of the Khami anticline in the north of the Gachsaran province is investigated. The Asmari Formation at the study section with a thickness of 276 meters is a thin, medium and thick to massive limestone, nodular limestone, marl, marly limestone, dolomite and dolomitic limestone. In this study 166 thin sections are studied and 23 genera and 24 species of foraminifera have been identified and 3 biozones are introduced. 1-Archaias asmaricus-Archaias hensoni-Miogypsinoides complanatus Assemblage zone. (Chattian) 2- Indeterminate zone (Aqutanian) 3-Borelis melo curdica-Borelis melo melo Assemblage zone. (Burdigalian) Thus, the age of the Asmari Formation at the study area is Chattian to Burdigalian (OligoMiocene). Based on study of thin sections and by considering the sediment texture, distribution of skeletal and non-skeletal grains, 12 Microfacies are recognized which were deposited in open marine, bar, semi-restricted and restricted lagoon. Four platform types for the Asmari Formation at the study area in comparison with the recent studies on Asmari Formation including: 1-Rupelian-lower Chattian: Distally steepend ramp, 2-middle Chattian-upper Chattian: open shelf, 3-Aqiutanian: homoclinal ramp, 4-lower Burdigalian: carbonate platform.

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APA: Copy

RAHIM ABADI, M., VAZIRI MOGHADDAM, H., SEYRAFIAN, A., & SOTOHIAN, F.. (2019). Biostratigraphy and microfacies of the Asmari Formation in north flank of Khami anticline (north of Gachsaran). IRANIAN JOURNAL OF PETROLEUM GEOLOGY, 8(16 ), 1-25. SID. https://sid.ir/paper/384847/en

Vancouver: Copy

RAHIM ABADI M., VAZIRI MOGHADDAM H., SEYRAFIAN A., SOTOHIAN F.. Biostratigraphy and microfacies of the Asmari Formation in north flank of Khami anticline (north of Gachsaran). IRANIAN JOURNAL OF PETROLEUM GEOLOGY[Internet]. 2019;8(16 ):1-25. Available from: https://sid.ir/paper/384847/en

IEEE: Copy

M. RAHIM ABADI, H. VAZIRI MOGHADDAM, A. SEYRAFIAN, and F. SOTOHIAN, “Biostratigraphy and microfacies of the Asmari Formation in north flank of Khami anticline (north of Gachsaran),” IRANIAN JOURNAL OF PETROLEUM GEOLOGY, vol. 8, no. 16 , pp. 1–25, 2019, [Online]. Available: https://sid.ir/paper/384847/en

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