Document Type : Original Research Paper
Authors
1 Assistant Professor, Department of Geology, Islamic Azad University North Tehran Branch, Tehran, Iran
2 Ph.D. Student, Department of Geology, Islamic Azad University North Tehran Branch, Tehran, Iran
3 Assistant professor, Department of Geology, Faculty of science, Imam Khomeini International University of Gazvin, Gazvin, Iran
4 Assistant professor, Department of Geology, Islamic Azad University Tabriz Branch, Tabriz, Iran
Abstract
The aim of this study is to determine microfacies and diagenetic processes of the Mobarak Formation with the age of early Carboniferous in Valiabad section, at Karaj-Chalus road. The thickness of the formation at this section is 339 m and consists of limestone with intercalations of shale and marl. According to lithological characteristics, the MobarakFormationis subdivided into 8 rock units and is disconformably overlain by the Lalun Formation and underlain by Dozdeband Formation. Thirteen microfacies have been recognized on the basis of depositional texture and petrographic analysis. These carbonate facies belong to four major sub- environments including beach/tidal flat, lagoon, barrier/sand shoal and open marine. The formation deposited in a homoclinal carbonate ramp.
Keywords
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