Geomorphology of Nahbandan Fault System and Surrounding in Eastern Iran

جغرافیا و مخاطرات محیطی

Article 4, Volume 11, Issue 2 - Serial Number 42, August 2022, Pages 61-75   

Document Type: Research Article

DOI: 10.22067/geoeh.2022.72969.1119

Authors

Majid Nemati^{* 1}; Camelia Yazdanfar²

¹Associate Professor in Seismology, Department of Geology, Faculty of Science and Earthquake Research Center of Shahid Bahonar University of Kerman, Iran

²PhD in Tectonic, Department of Geology, University of Orumieh, Iran

Abstract

Geomorphology is one of the tools to identify active faults and tectonic of active areas. Due to the presence of geomorphological deformations related to tectonics, the east of Iran is one of the active tectonic areas. Long strike-slip faults as well as the Sistan suture fault in this area is one of its most important features. These strike-slip faults are all dextral. The Nahbandan fault system is the longest fault system in the east of Iran. This system is composed of two eastern and western faults, and the eastern fault is longer. These faults and surrounding faults have created various landforms in the eastern part of Iran. From these various landforms, we can mention the displacement of young streams, folds, formations and the creation of pull-apart areas. In this research, in addition to displaying the landforms and fault displacements, the earth's formation has also been investigated following the cumulative and long-term movement and displacement of the faults. In this review, MrSID and SRTM satellite images have been used. In this study, MrSID and SRTM satellite images have been used. By using these images, the maximum and minimum elevation measured perpendicular to the faults were estimated as 200 meters and 1300 meters, respectively. The maximum horizontal displacement of the streams and formation measured along the faults were estimated to be 7782 meters and 13740 meters, respectively. The faults had outcrops in some places; some of these faults with visible outcrops were documented and investigated.

Keywords

Eastern Iran; Nehbandan Fault; Earthquake; Geomorphology; Tectonic

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