Micro-Bio Stratigraphy of Asmari Formation in Mamoolan Stratigraphy Section, Sout of Khorramabad
Micro-Bio Stratigraphy of Asmari Formation in Mamoolan Stratigraphy Section, Sout of Khorramabad作者机构:Department of Geology Payame Noor University Tehran Iran
出 版 物:《Open Journal of Geology》 (地质学期刊(英文))
年 卷 期:2016年第6卷第6期
页 面:459-467页
学科分类:070903[理学-古生物学与地层学(含:古人类学)] 0709[理学-地质学] 07[理学]
主 题:Zagros Asmari Lorestan Foraminifera Depositional Environment
摘 要:In this paper, Biostratigraphy of Asmari formation to San oligo-Myocene was studied in North Mamulan, South West Lorestan Province. In this region, Shahbazan-Asmari carbonate formation is located between Kashkan formation beneath and evaporative formation of Gachsaran as old as lower Miocene in the form of disconformity above. From 180 m real thickness observed in this study, 23 genera and 15 species of benthic foraminifera were identified and studied. These foraminifera were found in four assemblage zones suggesting that this formation dates back to Oligocene (Chattian-Rupelian) and early Miocene (Aquitanian-Burdigalian). Moreover, based on microscopic studies and visual observations, nine microfacies were identified that were deposited in three zones: lagoon, dam, and shallow open marine.