Identification of the seismogenic faults in the Zohan region (E-Iran) using topographic, aeromagnetic data and field observations

Document Type : Original Article

Authors

1 1Ph.D. Student, Department of Geology, Faculty of Basic Sciences, University of Birjand, Birjand, Iran.

2 rofessor, Department of Geology, Faculty of Basic Sciences, University of Birjand, Birjand, Iran.

3 3Assistant Professor, Department of Geology, Faculty of Basic Sciences, University of Birjand, Birjand, Iran

4 Assistant Professor, International Institute of Earthquake Engineering and Seismology, Tehran, Iran.

Abstract

Identification of the shaj seismogenic fault in the eastern Zohan 2012 earthquake(E-Iran) show that there are high-potentials of strong earthquake another faults in addition to the Abiz-Gazik-Avaz active fault system. Although seismic data are not distributed uniform across region however folding and cutting the Quaternary sediments is indicate this region should be considered as the places bearing active tectonic and high seismic risk. The process magnetic anomaly maps show magnetic lineaments with NNW (Shaj, Janahmad and Takhtejon) and E–W (Zohan, Saghdar and Qohestan) orientations.Spatial correlation of the Zohan and Qohestan magnetic lineaments with results of obtained from GPS data confirm the activity of E–W basement faults in the north and south region. This is suggested that rhomboid blocks from NNW and E–W trending resulted by the detection of topography lineaments and there are comparison with magnetic lineaments and seismogenic faults.

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Journal of Tectonics
Volume 1, April2015
April 2015
Pages 20-36

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