Slab‐like high velocity anomaly in the uppermost mantle beneath the Dabie‐Sulu Orogen

Abstract

Seismic tomography is used to determine three‐dimensional velocity structure of the Dabie‐Sulu orogen in eastern China. The high resolution image of the P‐waves velocity structure is obtained for the uppermost mantle to a depth of at least 150 km, along the latitudes of 30°–38°N and longitudes of 114°–122°E. Results of this inversion reveal a slab‐like high velocity anomaly under this orogen in the depth from Moho discontinuity to at least 110 km. It may represent a remnant of the subducted Yangtze block during the period of Triassic continent‐continent collision.