The boundary between the Indian and Asian tectonic plates below Tibet

摘要: The fate of the colliding Indian and Asian tectonic plates below Tibetan high plateau may be visualized by, in addition to seismic tomography, mapping deep discontinuities, like crust-mantle boundary (Moho), lithosphere-asthenosphere (LAB), or discontinuities at 410 660 km depth. We herein present observations with P S receiver function techniques beneath central western Tibet along two new profiles discuss results connection from earlier profiles, which did observe LAB. LAB is well-imaged by several suggests a changing mode India-Asia collision east-west direction. From eastern Himalayan syntaxis edge Tarim Basin, lithosphere underthrusting an increasingly shallower angle reaching progressively further north. A particular lithospheric region was formed northern as crush zone between plates, existence marked temperature, low mantle wavespeed (correlating late arriving signals discontinuity), poor Sn propagation, east southeast oriented global positioning system displacements, strikingly larger (SKS) anisotropy.