Khazar Fault, its structure and activity.

The Khazar fault in the northern part of the Alborz mountain range have changed the topography by making an obvious terrace in which along that the mountain drainage lines is ended where it is impossible to observe the geology structures due to the severe erosion and massive vegetation. In this study, some characters of this structure , along it from the west to the center, have presented in which indicates the high activity along this fault system. Here, in spite of some studies that deny or introduce it as an inactive fault, we believe the Khazar fault is active and can be cause serious earthquakes. The progressive activity of the Khazar fault has caused the fault segments, with strike-slip mechanisms, originating from it. These faults almost aren’t so long and are ended to some fractures in their southern range. The northern ridge of Alborz mountain range is controlled by their strike-slip displacement and the Khazar fault.