Structural Analysis of the Western Part of Shotori Mountain Range; Eastern Iran
سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 78
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شناسه ملی سند علمی:
JR_JSEE-24-1_001
تاریخ نمایه سازی: 8 شهریور 1402
چکیده مقاله:
NW-SE trending Shotori range has some structural elements such as folds and fractures (including thrust and strike-slip faults), following almost a similar trend. Based on the plotted stereograms, the predominant mechanism of the region’s faults is thrust with a dextral strike slip component which implies overcoming compressive stresses in the region. On the other hand the strike-slip horizontal component of the faults may also be due to the Nayband fault activities on Shotori and Esfandiar thrust zones. The steep dip of these faults may also be due to some normal faults converted to reverse faults as a result of stress phase change from tensional to compressional. Based on planar axis perpendicular compression or stretching axis σ۱= ۳۴, ۱۰ and σ۳= ۲۹۶, ۳۸ were obtained for the study area. striogram axial surface folds dominantly show NW-SE direction, which is indicates compression axis which is equal N۵۳, ۱۲.Aeromagnetic data analysis revealed two magnetic lineaments with the same trends as surveyed lineaments in the field. The relatively high magnetic intensity of these lineaments could be due to basement faults in the region. With regards to obtained stereo plots, trend of the folds’ axis are parallel to the regional thrust faults and folds’ contour diagrams apply asymmetric folds with faulting in the area.
کلیدواژه ها:
نویسندگان
Razieh Abbaspour
Department of Geology, University of Birjand, Birjand, Iran
Ahmad Rashidi
Department of Earthquake Research, Shahid Bahonar University of Kerman, Kerman, Iran; & International Institute of Earthquake Engineering and Seismology (IIEES), Tehran, Iran
Seyed Morteza Mousavi
Department of Geology, University of Birjand, Birjand, Iran
Shahram Shafieibafti
Department of Geology, Shahid Bahonar University of Kerman, Kerman, Iran
Majid Nemati
Department of Geology, Shahid Bahonar University of Kerman
Reza Derakhshani
Department of Geology, Shahid Bahonar University of Kerman, Kerman, Iran