1)Department of Earth and Space Science University of Science and Technology of China，Hefei 2300262)First Monitoring and Application Center, CEA, Tianjin 300180
Abstract：On the basis of the analysis of velocity field, deformation field and strain field of SichuanYunnan area, we proposed the complex deformation model with coexistence of clockwise rotation around eastern Himalayan syntaxis, stretch, compress and shear deformation in SichuanYunnan area. The acting forces for the eastward extrusion of the matter in plateau and NEEward continuous wedging act of the Assam Cape are the principal drive forces.
