Structural Heterogeneities in Southeast Tibet: Implications for Regional Flow in the Lower Crust and Upper Mantle

Figure 5

Plan views of P-wave and S-wave velocity images (in %) at the depths of 10 km, 40 km, and 90 km. The layer depth is shown in the lower-left corner of each map. Red color denotes low velocity while blue color represents high velocity. Black dots show the epicenters of earthquakes within a range of 5–10 km along each depth. Gray solid lines indicate the active faults and blue solid lines show the major plate boundaries and sutures. A red triangle denotes the active Tengchong volcano. The velocity perturbation scale and the magnitude scale of large crustal earthquakes are shown on the upper right of the map.