A Revision of the Macraster species (Echinodermata, Echinoidea) occurring in the Albian deposits of the Zagros basin, Southwest Iran

Shadan, Hossein Kamyabi; Villier, Loïc; Sadeghi, Abbas; Adabi, Mohammad Hossein

doi:10.1016/j.annpal.2013.11.003

Cited by 6 publications

(1 citation statement)

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“…The lower contact of the Sarvak Formation in type section is transitional and conformable with the Kazhdumi Formation (Kamyabi-Shadan et al, 2014;Afghah and Fadaei, 2015;Gholamalian et al, 2016). The upper contact of the Sarvak Formation is sharp and clear, with marls and shales of the Gurpi Formation (Senemari and Afghah, 2020).…”

Section: Introductionmentioning

confidence: 51%

Biostratigraphy, Microfacies and Depositional Environment of the Sarvak Formation at the Pyun Anticline (Zagros Basin, Southwest of Iran)

Mohajer

Afhgah

Dehghanian

et al. 2021

Acta Geologica Sinica (Eng)

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The Sarvak Formation is a carbonate sequence of Late Albian-Early Turonian age in Zagros Basin in Iran. In this investigation, the Sarvak Formation at the Pyun Anticline section (Izeh Zone) has been studied. It consists of 797 m thick limestone which overlies the Kazhdumi Formation conformably and underlies the Gurpi Formation unconformably at the Pyun Anticline. A very rich fossil association (85 genera and 132 species) characterizes the Pyun section. Based on the stratigraphic distribution of diagnosed foraminifera, five biozones are established: 1, Muricohedbergella-Globigerinelloides sp. assemblage zone (Late Albian); 2, Praealveolina iberica-Chrysalidina gradata interval zone (Early Cenomanian); 3, Chrysalidina gradata-Cisalveolina fraasi (fallax) and C. lehneri interval zone (Middle Cenomanian); 4, C. fraasi (fallax) and C. lehneri-Praetaberina bingistani assemblage zone (Late Cenomanian); 5, Nezzazatinella picardi-Mangashtia-Dicyclina assemblage zone (Early Turonian). Based on the petrographic and sedimentological analyses, some 13 carbonate microfacies were identified. The investigated microfacies confirm a ramp-type paleoenvironment. These microfacies, from distal to proximal environments, consist of: MF1:

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Section: Introductionmentioning

confidence: 51%