Geomorphology of Nahbandan Fault System and Surrounding in Eastern Iran

Document Type : Research Article

Authors

• Majid Nemati ¹
• Camelia Yazdanfar ²

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

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

https://doi.org/10.22067/geoeh.2022.72969.1119

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.

Graphical Abstract

Keywords

• Eastern Iran
• Nehbandan Fault
• Earthquake
• Geomorphology
• Tectonic

20.1001.1.23221682.1401.11.2.4.8

References

باقری، ساسان؛ یبلویی، مهدی؛ 1387. گسل کهور و شواهد ساختاری حاشیه آن، منطقه چاه داشی – غرب نهبندان. دوازدهمین همایش انجمن زمین شناسی ایران.، اهواز. شرکت ملی مناطق نفت‌خیز جنوب.

خطیب، محمدمهدی؛ سالاروند، اسماعیل؛ بومر، محمد؛ 1387. تأثیر حرکات سیستم گسلی نهبندان بر ژئومورفولوژی اطراف شهر نهبندان. جغرافیا و توسعه. دوره 6. شماره 12. صص 24-5.     

 https://gdij.usb.ac.ir/article_1240.html                                                                          

رابطیِ، دنیا؛ ده‌بزرگی، مریم؛ حکیمی، سعید؛ نوزعیم، رضا؛ 1397. بررسی زمین ساخت فعال با استفاده از شاخص‌های ژئومورفولوژی در حوضه سپیدرود. البرز غربی. پژوهش‌های ژئومورفولوژی کمی. دوره 7. شماره 2. پاییز 1397. صص 140-157                                    http://www.geomorphologyjournal.ir/article_81026.html

میلان، فاطمه؛  نعمتی مجید؛ 1397. شاخص‌های ژئومورفولوژی، زمین‌ساخت جنبا و لرزه‌خیزی حوزه‌های لوت و جازموریان (استان کرمان). فصل‌نامه علمی- پژوهشی زمین‌شناسی محیط‌زیست.، سال دوازدهم. شماره 42. صص 45-33.                                                     https://geojournal.islamshahr.iau.ir/article_545375.html

نعمتی، مجید؛ 1397. مبانی لرزه‌زمین‌ساخت با نگاهی ویژه به لرزه‌زمین‌ساخت ‌ایران‌زمین. انتشارات دانشگاه شهیدباهنر کرمان. 300 ص.                                                   https://mybooket.com/books/04788a1053a14692

 

Berberian M, Jackson JA, Fielding E, Parsons BE, Priestly K, Qorashi M, Talebian M, Walker R, Wright, TJ Baker E., 2001. The 1998 March 14 Fandoqa earthquake (Mw6.6) in Kerman, southeast Iran: re-rupture of the 1981 Sirch earthquake fault, triggering of slip on adjacent thrusts, and the active tectonics of the Gowk fault zone. Geophysical Journal International 146 (2): 371–398.  https:// onlinelibrary.wiley.com/ doi/ 10.1046/ j.1365-246x.2001.01459.x

Berberian M, Jackson JA, Qorashi M, Khatib MM, Priestley K, Talebian M, Ghafuri-Ashtiani, M. 1999. The 1997 May 10 Zirkuh (Qa’enat) earthquake (M7.2): faulting along the Sistan suture zone of eastern Iran. Geophysical Journal International 136: 671–694. https:// doi. org/ 10.1046/j.1365-246x.1999.00762.x

Berberian M, Jackson JA, Qorashi M, Talebian M, Khatib M, Priestley K., 2000. The 1994 Sefidabeh earthquakes in eastern Iran: blind thrusting and bedding-plane slip on a growing anticline, and active tectonics of the Sistan suture zone. Geophysical Journal International 142 (2): 283–299. https://onlinelibrary.wiley.com/doi/10.1046/j.1365-246x.2000.00158.x

Berberian M., 1979. Earthquake faulting and bedding thrust associated with the Tabas-e-Golshan (Iran) earthquake of September 16, 1978. Bull. Seismol. Soc. Am., 69 (6): 1861–1887. https://doi.org/10.1785/BSSA0690061861

Nemati M, Derakhshani R., 2021. Short-term seismicity patterns along the most active faults in Iran". Journal of Iberian Geology 47(3):441-459. . https://doi.org/10.1007/s41513-020-00133-0

Nemati M., 2015. Aftershocks investigation of 2010 Dec. and 2011 Jan. Rigan earthquakes in the southern Kerman province, SE Iran. Journal of Tethys (Iran) 3(2): 96-113. http://jththys.org    

Nemati M., 2018. Seismotectonic and seismicity of Makran, a bimodal subduction zone, SE Iran. Journal of Asian Earth Sciences 196: 139-161. https:// doi. org/ 10.1016/ j.jseaes. 2018. 08. 009

Savidge E, Nissen E, Nemati M, Karas¨ozen E, Hollingsworth J, Talebian M, Bergman E, Ghods A, Ghorashi M, Kosari E, Rashidi A, Rashidi A., 2019. The December 2017 Hojedk (Iran) earthquake triplet — sequential rupture of shallow reverse faults in a strike-slip restraining bend. Geophysical Journal International 217(2): 909-925. https:// doi. org/ 10. 1007/ s10950-020-09934-3

Walker R, Jackson J, Baker C., 2004. Active faulting and seismicity of the Dasht-e-Bayaz region, eastern Iran. Geophysical Journal International 157: 265–285. https:// academic. oup. com/ gji/article/157/1/265/557991

Walker RT, Bergman EA, Elliott JR, Fielding EJ, Ghods AR, Ghoraishi M, Jackson J, Nazari H, Nemati M, Oveisi B, Talebian M, Walters RJ., 2013, The 2010-2011 South Rigan (Baluchestan) earthquake sequence and its implications for distributed deformation and earthquake hazard in southeast Iran. Geophysical Journal International, 193, 349-374. https://academic.oup.com/gji/article/193/1/349/739478