TY - EJOUR
AU - Moghaddam, Iraj Maghfouri
AU - Khaksar, Keyvan
AU - Darabi, Ghamarnaz
AU - rokrok, Zahra Rahomo
AU - Besharati, Ziba
PY - 2024
DA - May
TI - Microbiostratigraphy of upper Cretaceous deposits (Bangestan Group) in the northwestern flank of Sepid Kuh anticline, W Iran
T2 - Iranian Journal of Earth Sciences
VL - 15
L1 - https://oiccpress.com/Iranian-Journal-of-Earth-Sciences/article/microbiostratigraphy-of-upper-cretaceous-deposits-bangestan-group-in-the-northwestern-flank-of-sepid-kuh-anticline-w-iran-2/
DO - 10.30495/ijes.2022.521332.1042
N2 - The benthic and planktonic foraminiferal contents of the Bangestan Group (Sarvak, Surgah and Ilam formations) in the Sepid Kuh anticline in the Lorestan Zone, W Iran, were studied. Bangestan Group consists of limestone, argillaceous limestone, dolomitic limestone and marl with thickness of 5400 m. In this section Bangestan Group overlies Garu Formation disconformably and its upper boundary is not exposed. By micropaleontological study on 176 thin sections, 8 genus and 34 species planktonic foraminifera were identified. 400 m of Sarvak Formation has very little fossil diversity that does not indicate a certain age. For this reason, this interval was called the indeterminate zone, which due to its stratigraphic position, is probably of Cenomanian age. Based on the biostratigraphical range of planktonic foraminifera distinguished, four biozones can be identified: Helvetoglobotruncana helvetica Total Rang Zone (Early- Middle Turonian), Marginotruncana schneegansi partial Range Zone (late Turonian), Diacarinella concavata Interval Zone (Coniacian), and Diacarinella asymetrica Total Zone (Santonian).
IS - 3
PB - OICC Press
KW - Senomanian., Santonian, Lorestan Zone, Sepid Kuh, Bangestan Group 
EN -