Figure 2

2D inversion models of line HZ (a) with normalized misfit 2.265, line AQ (b) with normalized misfit 2.379 and line ZX (c) with normalized misfit 1.91. 1: normalized misfit of the inversion at each station using the same color bar with electrical modes; 2: proposed slab interfaces; 3: depth-integrated conductance calculated for the upper mantle (50–150 km); 4: upwelling direction. S1–S4 represent the “traces” of intracontinental subducted slabs, L1–L4 represent the top interfaces of the slabs, and “N” (S2-N, L2-N) indicates the Nanling Range.