Document Type : Original Research Paper


1 Department of Geology, Science and Research Branch, Islamic Azad University, Tehran, Iran

2 Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran


Bafq-Baghin fault system has formed by 8 fault segments. On this fault system has not recorded any historical seismic data. Instrumentally earthquakes are located in low depth and their magnitude is from small to medium. Morphometric parameters and the presence of fault scarp along the fault segments indicate their activeness. Recent earthquake epicenters of the region (2005-2009) have northeast-southwest trend are located at the intersection of southeast of the Bafq-Baghin fault system. Field investigations and satellite images of region show that the concentration trend of recent earthquake epicenters is located on the cross fault trend that introduced as Rafsanjan-Zarand fault. This fault is one of the X faults in the region that has formed by movement of shear zone.


Mobasher, K.,  Babaie,  H. A., 2008- Kinematic significance of fold- and fault-related fracture systems in the Zagros mountains, southern Iran. Tectonophysics 451 (2008) 156–169.
Riedel, W., 1929- "Zarmechonik geologischer Brucher scheinungen", zentralbatt fur mineralogie, Geologie und paleontologie, AbhandlungB, pp.354-368.
Talwani, P., 1999- Fault Geometry and Earthquakes in Continental Interiors, Tectonophysics, 305, 371-379.
Tchalenko, J. S., 1970- Similarities between shear zones of different magnitudes, Geol.soc.Amer.Bull, Vol.81, PP.1625-1640.
Wells, D. L. & Coppersmith, K. J., 1994- New empirical relationships among magnitude, rupture length, rupture width, rupture area and Surface displacement, Bulletin of the Seismological Society of America, 84(4): 974-1002.
Yousefi, E. & Friedberg, J. L., 1978- Aero magnetic map of Iran Rafsanjan (Quadrangle No.110), Geological survey of Iran.