بررسی توزیع محورهای تنش بیشینه در ایالت سیستان و الگوی ساختاری پیشنهادی

Abstract

Systan state is one of the important structures in theeast of Iran that separated from Loot block by Nehbandan fault. the maximum issue of stress axis by concerning viewing of fault surface and sliken sides and also the extentional ...(par manand) joints and Neogen fold axis will be Northeast-southwest . so we suggeste two structural model for this area.۱) subsistance a right lateral extentional-shearing system.the witnesses of this model is the diffrences between the age of marginal faults (north-south) with internal faults (Northwest-Southeast) and the angle of main stress for apologis systematic joints. (P type) ۲) constitution initial faults through right lateral motion after faults. (Concerning the first model), one block's rotation accure at divide of these faults. The witnesses of this , we can indicate a shearing motion (simple shear) that making possible the chance of block's rotation at divide of faults , and also construct a sery of extentional areas to compositional areas.