Provenance, palaeoweathering and tectonic setting of the Ediacaran Bayandor Formation in NW Iran: Implications for the northern Gondwana continental margin during the late Neoproterozoic

The present study deals with depositional environment and microfacies analysis of the Asmari Formation in the Nasr-Abad section of Zagros basin in SW of Iran. The thickness of 240 m with Nasr-Abad stratigraphic section to define microfauna is taken from Asmari Formation. Asmari Formation is located in SE of Shiraz. According to the identified index microfossils, following three Oligocene assemblages are determined: 1: Nummulites fichteli-Nummulites vascus, 2: Archaias asmaricuas-Archiaias hensoni, and 3: Peneroplis evolutus-Austroterillina howchini. According to the field observation, thin section studies and the results of petrographic analyses, four microfacies contain open marine (MF1-3), shoal (MF-4), lagoon (MF5-7) and tidal flat (MF8-9) depositional environments are identified. Based on the paleoenvironmental interpretations, the lack of barrier reefs as well as of gradual facies change, a homoclinal ramp mainly represented by its inner and middle sectors is proposed and reconstructed for depositional environment of the Asmari Formation in the studied section.

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Compositional and Geochemical Signatures of Oligocene volcanoclastic sandstones of Abbasabad-Kahak area, NE Iran: Implications for provenance relations and paleogeography

Jafarzadeh

Maryam

Mousivand

et al. 2022

Marine and Petroleum Geology

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Provenance, palaeoweathering and tectonic setting of the Ediacaran Bayandor Formation in NW Iran: Implications for the northern Gondwana continental margin during the late Neoproterozoic

Cited by 7 publications

References 50 publications

Provenance analysis and maturity of the Rayen River sediments in Central Iran: based on geochemical evidence

Provenance analysis and maturity of the Rayen River sediments in Central Iran: based on geochemical evidence

Facies analysis and depositional environment of the Oligocene–Miocene Asmari Formation, in Interior Fars (Zagros Basin, Iran)

Compositional and Geochemical Signatures of Oligocene volcanoclastic sandstones of Abbasabad-Kahak area, NE Iran: Implications for provenance relations and paleogeography

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