Crust and upper mantle velocity structure in SE Tibet and its geodynamic implications

Southeastern Tibet is a major area for transport of the Tibetan Plateau materials. Recently, researchers from University of Science and Technology of China obtained the high-resolution crust and upper mantle velocity structure of this area from ambient noise and surface wave tomography. The results reveal three major dynamic modes in southeastern Tibet: rigid extrusion of upper crustal material, complex and disconnected plastic flow of mid-lower crust material, and large-scale upwelling of asthenospheric material.