Biostratigraphy of the Upper Devonian– Lower Carboniferous deposits in Til-Abad section, northeast Shahrud, Eastern Alborz

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Parvizi Tahereh; BAHRAMI ALI; Isabela Kaiser Sandra; Konigshof Peter

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Paper Information

Journal: JOURNAL OF STRATIGRAPHY AND SEDIMENTOLOGY RESEARCHES Year:2020 | Volume:36 | Issue:1 (78) Page(s): 89-114

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Information Journal Paper

Title

Biostratigraphy of the Upper Devonian– Lower Carboniferous deposits in Til-Abad section, northeast Shahrud, Eastern Alborz

Author(s)

Parvizi Tahereh | BAHRAMI ALI | Isabela Kaiser Sandra | Konigshof Peter | Issue Writer Certificate

Keywords

BiostratigraphyQ2

Late DevonianQ1

Early CarboniferousQ1

Devonian–Carboniferous boundaryQ1

Hangenberg CrisisQ1

Til-AbadQ1

Eastern AlborzQ1

Abstract

The Biostratigraphy of Devonian– Carboniferous (D/C) boundary of Til-Abad section in Eastern Alborz is carried out in this study. The studied section is located about 85 km of northeast Shahrud city and close to the Shahrud– Azadshahr road. The uppermost sediments of Devonian and lowermost Carboniferous strata in Til-Abad section (467 m thick) systematically studied and in general led to discrimination of seven following zonal boundaries: Bispathodus aculeatus aculeatus zone, Bispathodus costatus zone, Bispathodus ultimus zone,? praesulcata zone, ckI, sulcate zone, typicus Zone and anchoralis-latus Zone. The D/C transition interval contains a bioclastic limestone and a coaly shale bed (3 cm thick) with interbedded of very thin gypsum layer. The first horizon of Carboniferous strata is begun with grey marls interbedding fossiliferous limestone. This unit has large amounts of very small corals and brachiopods with high preservation. Interpreted conodont data shows lack of kockeli Zone at the D/C boundary and Carboniferous deposits disconformably overlays the Devonian deposits of the Khoshyeilagh Formation.

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APA: Copy

Parvizi, Tahereh, BAHRAMI, ALI, Isabela Kaiser, Sandra, & Konigshof, Peter. (2020). Biostratigraphy of the Upper Devonian– Lower Carboniferous deposits in Til-Abad section, northeast Shahrud, Eastern Alborz. JOURNAL OF STRATIGRAPHY AND SEDIMENTOLOGY RESEARCHES, 36(1 (78) ), 89-114. SID. https://sid.ir/paper/157085/en

Vancouver: Copy

Parvizi Tahereh, BAHRAMI ALI, Isabela Kaiser Sandra, Konigshof Peter. Biostratigraphy of the Upper Devonian– Lower Carboniferous deposits in Til-Abad section, northeast Shahrud, Eastern Alborz. JOURNAL OF STRATIGRAPHY AND SEDIMENTOLOGY RESEARCHES[Internet]. 2020;36(1 (78) ):89-114. Available from: https://sid.ir/paper/157085/en

IEEE: Copy

Tahereh Parvizi, ALI BAHRAMI, Sandra Isabela Kaiser, and Peter Konigshof, “Biostratigraphy of the Upper Devonian– Lower Carboniferous deposits in Til-Abad section, northeast Shahrud, Eastern Alborz,” JOURNAL OF STRATIGRAPHY AND SEDIMENTOLOGY RESEARCHES, vol. 36, no. 1 (78) , pp. 89–114, 2020, [Online]. Available: https://sid.ir/paper/157085/en

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