Figure 7

Schematic diagrams illustrating the evolution of the Dunhua-Mishan fault. (a) The magma upwelling within the fault zone due to crustal extension in the Late Cretaceous-Paleogene periods. (b) The magma upwelling cooled and solidified within the fault zone at the crust-mantle boundary with the development of geological time, contributing to the observed double Moho discontinuities.