Fig. 6

(a) Contour map of Ro valued in the Wufeng-Longmaxi formations. (b) Maximum ancient burial depth of the Wufeng Formation (basal part) in southern Sichuan and Emei basalt distribution (modified according from13).

(a) Contour map of Ro valued in the Wufeng-Longmaxi formations. (b) Maximum ancient burial depth of the Wufeng Formation (basal part) in southern Sichuan and Emei basalt distribution (modified according from13).