سامانه گسل امتدادلغز بيدهند (جنوب قم)

Bidhand Strike-Slip Fault System (South Qom)

The NNW-SSE striking Bidhand strike-slip fault system eut and displaced the Cenozoic volcanic and sedimentary rocks ofthe Urumieh-Dokhtar magmaltc are in south Qom. Structural evidences show that at least 16 km horizontal displacement in the Eoeene volcanics has been caused due to dextral strike-slip movement along this fault. The compressional and extensional terminations were developed at the western block and not observed at the eastern one. The reverse and thrust faults associated with the drag folds were generated in the northwestern compressional termination and gabbrote sills were intruded in the southwestern extensional termination. Younger syenitic and granitie intrusive (Miocene) were intruded in the vaeant space ofthe northern compressional termination and releasing zones along the central straight segments of the Bidhand fault, Gabbroie sills in the extensional termination at the south-western area of the Bidhand fault were folded and thrustcd towards northeast due to the later deformational