Writers : Ghanadan,Azadeh;Almasian,Mahmoud;Ghaemi,Farzin;Naderi,Nasir

Abstract :

The studied area lies in south of Mashhad and has several thrust faults. The most important is the Ultra-Basic Mashhad units thrust fault which is an imbricate type of thrust fault and consists of turbiditic rocks. Another important fault contact is the Sangbast-Shandiz thrust fault which causes the thrusting of Paleozoic turbidits onto lower-middle Jurassic conglomerates. This shows that this thrust fault is a leading imbricate type. The age of this fault is post-Jurassic. This fault approximately has a 140 to 145 degree dip that points in a NE direction and also consists of fault-propagation and folding. The axis of these folds is parallel to front normal thrust and its' surface axis is in a NE direction. The movement of this fault has been determined to be dextral. By calculating the parameters and special vectors and graphing them on related diagrams, it was specified that the joints in the area are of a front normal thrust and front parallel thrust kind.

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