THE CRUSTAL STRUCTURE AND MODE OF CRUSTAL MOVEMENT IN THE SICHUAN-YUNNAN REGION

Based on geophysical features,MT results and velocity structure of the crust and upper mantle in the Sichuan-Yunnan area,the crustal structure and tectonic setting in the deep crust are here presented. It has become clear that the thick crust of the area bordering the Sichuan and Yunnan provinces,appears to reflect the SSE extrusion in the continent-continent collision between the Indian plate and Eurasian plate. Its recent activity is characte-rized by block faulting.