محاسبه و تفسير برخي شاخص هاي ريخت زمين ساختي پيرامون گسل ترود، جنوب دامغان

Calculation and Interpretation of Some Morphotectonic Indices Around the Torud Fault, South of Damghan

The only geologic evidence of the neotectonic activity of theTorud region is its seismisity which assumed to be related to the Torud seismogenic fault. This fault has been overlain by the Quaternary alluvium in the major part of its length. Therefore, the study of morphotectonical characteristics of the region gives more evidences about its activity. Calculation of three morphotectonic indices including stream length - gradient ( SL) and ratio of valley - floor width to valley height (Vf) of stream channels and mountain front sinuosity (Smf) shows high SL values (425 - 1044) and low Vf (2.68 - 3.34) and Smf (1.05 - 1.44) values and indicate