P-to-S converted teleseismic waves recorded by temporary broadband networks
across Tibet show a north-dipping interface that begins 50 kilometers nort
h of the Zangbo suture at the depth of the Moho (80 kilometers) and extends
to a depth of 200 kilometers beneath the Bangong suture. Under northern Ti
bet a segmented south-dipping structure was imaged. These observations sugg
est a different form of detachment of the Indian and Asian Lithospheric man
tles caused by differences in their composition and buoyancy.