Discovery of Late Mississippian (late Serpukhovian)–Early Pennsylvanian (earliest Bashkirian?) foraminiferal assemblages from the Sanandaj–Sirjan Zone, Iran: Biostratigraphic and palaeoenvironmental implications

Autor(en)

Shirin Fassihi, Elena Kulagina, Petra Heinz, Fariba Shirezadeh Esfahani

Abstrakt

This study reports the new discovery of relatively abundant foraminiferal faunas from the upper Serpukhovian–lowermost Bashkirian? of the Ghaleh Formation in theShahreza region of the Sanandaj–Sirjan Zone, Iran. Four successive assemblages spanning the upper Serpukhovian–lowermost Bashkirian? are proposed: (1) Assemblage with Biseriella minima and Eostaffellina paraprotvae; (2) Assemblage with Bradyina cribrostomata; (3) Assemblage with Parastaffella utkaensa and Plectostaffella spp., (4) Assemblage with Plectostaffella ex gr. varvariensis. The newly discovered foraminiferal assemblages of the Sanandaj–Sirjan Zone have some species in common with assemblages of the Russian Platform, Donets Basin, Urals, and Western Europe. Ikensieformis aff. mirifica, and Eostaffella igoi, and a new species Ikensieformis persiaensis sp. nov. are described. The microfacies analysis of the Ghaleh Formation limestones suggests a moderate to high-energy shallow marine warm environment, more likely of the inner ramp.

Organisation(en)

Institut für Paläontologie

Externe Organisation(en)

Russian Academy of Sciences, Islamic Azad University

Journal

Geological Journal

Band

58

Seiten

1042-1068

Anzahl der Seiten

27

ISSN

0072-1050

DOI

https://doi.org/10.1002/gj.4641

Publikationsdatum

11-2022

Peer-reviewed

Ja

ÖFOS 2012

105123 Stratigraphie, 105118 Paläontologie

Schlagwörter

ASJC Scopus Sachgebiete

Geology

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/588aa08a-3e2d-4cd9-af97-c4b88ca15165