Sedimentary Environment and Relative Sea Level Changes of the Asmari Formation Deposited in Lurestan Basin, Southwest of Zagros

• 作者: Ava Alizadeh Davood Jahani Mohammad Reza Kamali
• 来源期刊: 地质学期刊(英文)
• 学科: 地球科学
• 关键词: Asmari Formation Oligomicene MICROFACIES Sequence STRATIGRAPHIC Lurestan BASIN SOUTHWEST of ZAGROS
• 年，卷（期）: 2017,（7）
• 页码范围: 945-964
• 页数: 20页
• 分类号: P61

摘要

Asmari Formation is deposited in the Zagros Foreland basin during Oligo-Miocene time. In the presented research, Sheykh Makan (north of Kabir-Kuh Anticline) section located at Lurestan Basin is studied to achieve an understanding of facies changes, paleoenvironment and also sequence stratigraphic framework (relative sea level changes) of the Asmari Formation. Results of this study revealed that 15 microfacies grouped to four facies belts named as tidal flat, lagoon, barrier and open marine are the main constituents. A homoclinal ramp is determined as the depositional setting of the Asmari Formation. In Sheykh Makan Section, studied interval contains three third-order sequences aging oligmiocene. It overlies gradually shaly Pabdeh Formation and is overlain by evaporitic Gachsaran Formatin.