Abstract
Seismic tomography across the Altyn Tagh fault, at the north edge
of the Tibetan Plateau, reveals a low P-wave velocity anomaly below
the fault down to 140 kilometers. This anomaly probably reflects
strike-slip shear in the lithosphere. Slip-partitioning may also
induce a wedge of crust from the Tarim Basin to plunge into the mantle.
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