The Role of Fault Zone of Khezr Abad Area, Yazd on Creation of Mass Movements

One of the causes of mass movement is the presence of faults. The studied basin in this research was Khezr-Abad Basin, one of the sub-basins of Yazd-Ardakan plain on the northern slope of Shirkouh mountain range in Yazd which is located between 53 - 41'-30" up to 54 - 12' of east longitude and 31- 46'-00 up to 32-06'-00 of north latitude. and there are over 418 km of faults in the basin. This basin is part of the city of Sadukh and located in the south part of the city. In this study, the fault weight were identified through the geomorphic indicators and In order to prove the region's activation, the mountain front sinuosity index and rock formations photo lineament recognition through areal photos, satellite photos (remote sensing) and Geology Maps has been performed that the index action in the East Zone was 1.2 and in the western zone was 1.3, which indicates that the basin is morph tectonically active. Then by identifying the fault zone in the region and identifying the main and minor faults and preparing faults maps in the Arc GIS, the effect of the fault zone on the formation of mass movements was evaluated.