Open Journal of Geology, 2017, 7, 965-977 http://www.scirp.org/journal/ojg ISSN Online: 2161-7589 ISSN Print: 2161-7570 DOI: 10.4236/ojg.2017.77065 July 21, 2017 A New Approach to Permian System in the Section of Gahkum Mountain (Zagros-Iran) Maryam Abedini 1* , Ali Aghanabati 2 , Ali Meisami 3 , Davoud Jahani 4 1 Islamic Azad University, North Tehran Branch, Tehran, Iran 2 Department of Geology, Faculty of Science, Islamic Azad University, North Tehran Branch, Tehran, Iran 3 Department of Geology, Islamic Azad University, Boomehen Branch, Boomehen, Iran 4 Department of Geology, Islamic Azad University, North Tehran Branch, Tehran, Iran Abstract The deposits of Permian system in Kuh-e-Gahkum consist of 480 m clastic subdiffusion of Faraghan Formation and carbonates of Dalan Formation. In this section, the sediments of Faraghan Formation, which is gradationally overlain by Dalan formation, unconformably overlies Zakin Formation (Low- er Carboniferous). In the upper part, Kangan Formation rests on the Permian deposits with an erosional and unconformable contact. Studying the micro- scopic thin sections led to the identification of 37 genera and 37 species of Foraminifera as well as 14 genera and 15 species of algae. According to the identified foraminifera in Faraghan and Dalan Formations, the age of the rock units in Permian system is assigned to Julfian-Asselian. Keywords Permian, Gahkum, Zakin Formation, Dalan Formation, Foraminifera 1. Introduction Similar to other parts of Iran and its neighbors, Permian progradational se- quences (Faraghan Formation and its equivalences) are deposited in Zagros structural-sedimentary zone after a long period of erosion resulting from various phases of Hercynian tectonic, and finally reach to the upper Permian marine deposits (Dalan formation and its equivalences). Given the above-mentioned erosion period, progradational subdiffusions have clastic origin and are mostly composed of sandstone in fluvial environments, particularly in intermediate deltaic environments. Therefore, a dozens of highly different views have been presented as they represent poor paleontological data. Regarding the lithological studies and gathered microfossils, the age of the How to cite this paper: Abedini, M., Ag- hanabati, A., Meisami, A. and Jahani, D. (2017) A New Approach to Permian Sys- tem in the Section of Gahkum Mountain (Zagros-Iran). Open Journal of Geology, 7, 965-977. https://doi.org/10.4236/ojg.2017.77065 Received: January 27, 2017 Accepted: July 18, 2017 Published: July 21, 2017 Copyright © 2017 by authors and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access