Analysis of deep geological structures by variety of Curie point Depth in Birjand area, east of IRAN

摘要

We examined the geology structures of the crust across complex deformation zones in Birjand (E Iran, 32°27'N to 33°28'N and 58°30'E to 59°30'E, ca. 600 km2) using the Curie Point Depth (CPD) estimates of the tectonic state of the crust with the seismic activity to provide insights for spatial limits of brittle failure in this region. The CPD estimates of Birjand area from 10.3 to 16 km below the surface. Birjand has one regions of shallow CPD. The shallow CPD region in the Bagheran Mountain in southern part of the study area is caused by upper crustal thinning and swallowing of high conductivity lower crust. In this area where hydrothermal reservoirs are located, CPD significantly shallows.