Affect of shazand Fault in active Tectonics of the Golpayegan Region

Subject Areas :

علیرضا ندیمی ¹ , حمید ثمری ² , علی محمد رجبی ³ , سیدجواد طباطبایی ⁴

1 - گروه زمین شناسی دانشگاه آزاد اسلامی واحد محلات
2 - گروه زمین شناسی دانشگاه آزاد اسلامی واحد محلات
3 - گروه زمین شناسی دانشگاه آزاد اسلامی واحد محلات
4 - گروه زمین شناسی دانشگاه آزاد اسلامی واحد محلات

Received: 2016-09-03 Accepted : 2016-09-03 Published : 2016-08-22

Keywords: Zagros, active tectonics, Shazand Fault, Golpayegan,

Abstract :

Structural and morphotectonical evidences of the Golpayegan Region show that there are twoactive faults systems parallel and normal to the Main Zagros thrust. The Shazand fault has 190 kmlength and is a major NW-SE-trending fault that stretched from northwest Shazand town towardsouthwestern Isfahan. Around Golpayegan town, the Shazand fault and its branch, Hosseinabadfault make an active area. These faults have reverse and right-lateral motions. The Shazand faultcuts and rotate the Quaternary alluvial fans, displaced Golpayegan and Khomein rivers about 4 kmand uplift the Golpayegan depression. Increase of vertical erosion rate in recent years show thattectonically, the Golpayegan Region is active.