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Journal of African earth sciences v.139, 2018년, pp.440 - 462   SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Geometric-kinematic characteristics of the main faults in the W-SW of the Lut Block (SE Iran)

Rashidi Boshrabadi, Ahmad (Phd Student, Department of Geology, University of Birjand, Birjand, Iran ) ; Khatib, Mohamad Mahdi (Professor (Full), Department of Geology, University of Birjand, Birjand, Iran ) ; Raeesi, Mohamad (PhD in Seismology, Independent Researcher, SeisAnalysis AS, Bergen, Norway ) ; Mousavi, Seyed Morteza (Assistant Professor, Department of Geology, University of Birjand, Birjand, Iran ) ; Djamour, Yahya (Associate Professor, National Cartographic Center of I.R., Tehran, Iran ) ;
  • 초록  

    Abstract The area to the W-SW of the Lut Block in Iran has experienced numerous historical and recent destructive earthquakes. We examined a number of faults in this area that have high potential for generating destructive earthquakes. In this study a number of faults are introduced and named for the first time. These new faults are Takdar, Dehno, Suru, Hojat Abad, North Faryab, North Kahnoj, Heydarabad, Khatun Abad and South Faryab. For a group of previously known faults, their mechanism and geological offsets are investigated for the first time. This group of faults include East Nayband, West Nayband, Sardueiyeh, Dalfard, Khordum, South Jabal-e-Barez, and North Jabal-e-Barez. The N-S fault systems of Sabzevaran, Gowk, and Nayband induce slip on the E-W, NE-SW and NW-SE fault systems. The faulting patterns appear to preserve different stages of fault development. We investigated the distribution of active faults and the role that they play in accommodating tectonic strain in the SW-Lut. In the study area, the fault systems with en-echelon arrangement create structures such as restraining and releasing stepover, fault bend and pullapart basin. The main mechanism for fault growth in the region seems to be ‘segment linkage of preexisting weaknesses’ and also for a limited area through ‘process zone’. Estimations are made for the likely magnitudes of separate or combined failure of the fault segments. Such magnitudes are used in hazard analysis of the region. Highlights A number of active faults are introduced and named for the first time. Investigated are the distribution of active faults and the role that they play in tectonic strain. The main mechanism for fault growth in SW-Lut is ‘segment linkage of preexisting weaknesses’. Estimations are made for the likely magnitudes of combined failure of the fault segments.


  • 주제어

    Active tectonics .   En-echelon faults .   Fault growth .   Restraining zone .   Releasing zone .   Seismic hazard.  

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