Bidhand Strike-Slip Fault System (South Qom)
The NNW-SSE striking Bidhand strike-slip fault system cut and displaced the Cenozoic volcanic and sedimentary rocks of the Urumieh-Dokhtar magmatic arc in south Qom. Structural evidences show that at least 16 km horizontal displacement in the Eocene 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 gabbroic sills were intruded in the southwestern extensional termination. Younger syenitic and granitic intrusive (Miocene) were intruded in the vacant space of the northern compressional termination and releasing zones along the central straight segments of the Bidhand fault. Gabbroic sills in the extensional termination at the south-western area of the Bidhand fault were folded and thrusted towards northeast due to the later deformational events.
Geosciences Scientific Quarterly Journal, Volume:19 Issue:74, 2010
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