Pierced Salt Domes in the Persian Gulf and in the Zagros Mountain Ranges
J. Rahnama-Rad et al. / Iranian Journal of Earth Sciences 1 (2009) / 57-72 57 Pierced salt domes in the Persian Gulf and in the Zagros mountain ranges Islamic Azad University Mashhad Branch in southern Iran and their relationship to hydrocarbon and basement tectonics J. Rahnama-Rad*1, G. Farhoudi 2, H. Ghorbani 3 Sh. Habibi Mood 1 and R. Derakhshani 4 1. Department of Geology, Islamic Azad University, Zahedan Branch, Zahedan, Iran, 2. Islamic Azad University, Shiraz Branch, Shiraz, Iran. 3. Lar Consultant, Tehran, Iran. 4. Department of Geology, Faculty of basic science, Shahid Bahonar University, Kerman, Iran Received 4 February 2008; accepted: 8 September 2009 Abstract The most enigmatic problems with the nearly 200 salt domes pierced in the Persian Gulf and in the Zagros Mountain Ranges (ZMR) in southern Iran, a unique morphology in the world, have been the matter of this study, which is based on a combination of field work, enhancement of satellite and aerial photographs etc. In the ZMR, structural anomalies are frequently associated with similar facies distribution patterns. In the eastern portion of the region, emergent salt plugs of Infra-Cambrian age exhibit the same alignment patterns. Such trends bear no apparent genetic relationship to the Tertiary folding responsible for the present Zagros fold belt, but rather indicate their affinity with linear basement features which are readily observable on Land sat imagery and aerial photographs. Bending of anticlines in the competent cover rock, combined with minor strike-slip faults and horizontal displacements of parts of folded structures, strongly point to the presence of these basement faults.
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