Microfacies, depositional environments and biostratigraphy of Asmari Formation in Dashtroom section (South of Yasuj)

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BINAZADEH T.; Binazadeh a.; VAFAEI T.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: GEOSCIENCES Year:2018 | Volume:27 | Issue:106 Page(s): 169-178

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Information Journal Paper

Title

Microfacies, depositional environments and biostratigraphy of Asmari Formation in Dashtroom section (South of Yasuj)

Author(s)

BINAZADEH T. | Binazadeh a. | VAFAEI T. | Issue Writer Certificate

Keywords

Asmari FormationQ2

YasujQ1

MicrofaciesQ2

OligoMioceneQ2

BiostratigraphyQ1

Abstract

The Asmari Formation is a thick carbonate sequence in Zagros foreland basin (southwest of Iran). It was deposited during Oligocene – Early Miocene ages. The formation with a thickness of 233m cropped out in the Dashtroom section (15 km south of Yasuj). This formation was studied from Microfacies, sedimentary environment and biostratigrarphy point of view. Study of benthic foraminifera led to recognition of 23 genera and 32 species. In general, three assemblage biozones were recognized in this formation, consisting of: 1. Lepidocyclina-Operculina-Ditrupa assemblage zone 2. Miogypsina– Elphidium sp., Peneroplis farsensis assemblage zone 3. Borelis melo curdica-Meandropsina iranica assemblage zone An age of Early Oligocene (Rupelian-Chattian)-Early Miocene (Burdigalian) is suggested for the formation at the study area. Based on laboratory studies, nine Microfacies related to three subenvironments (lagoon, bar and open marine) were identified. This study revealed that, the Asmari Formation deposited on a homoclinal epicontinental carbonate ramp.

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APA: Copy

BINAZADEH, T., Binazadeh, a., & VAFAEI, T.. (2018). Microfacies, depositional environments and biostratigraphy of Asmari Formation in Dashtroom section (South of Yasuj). GEOSCIENCES, 27(106 ), 169-178. SID. https://sid.ir/paper/32103/en

Vancouver: Copy

BINAZADEH T., Binazadeh a., VAFAEI T.. Microfacies, depositional environments and biostratigraphy of Asmari Formation in Dashtroom section (South of Yasuj). GEOSCIENCES[Internet]. 2018;27(106 ):169-178. Available from: https://sid.ir/paper/32103/en

IEEE: Copy

T. BINAZADEH, a. Binazadeh, and T. VAFAEI, “Microfacies, depositional environments and biostratigraphy of Asmari Formation in Dashtroom section (South of Yasuj),” GEOSCIENCES, vol. 27, no. 106 , pp. 169–178, 2018, [Online]. Available: https://sid.ir/paper/32103/en

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