A preliminary study of the relationship between Mesozoic lithosphere evolution in eastern China and the subduction of the Pacific plate

Abstract：Many scholars at home and abroad believe that lithospheric evolution was related to the subduction of the Pacific plate to the Eurasian plate in eastern China in early Mesozoic. In recent years, the authors examined lithosphere evolution in eastern China from the lithosphere –asthenosphere deep geological process and found that early Mesozoic lithospheric evolution and the subduction of the Pacific plate to the Eurasia plate had no direct relationship, and they might have been the results of the joint action, i.e., the subduction of some oceanic basins of the East Asian seas that originated in China’s eastern periphery to the eastern China continental and collisional orogenic belt and the asthenosphere upwelling caused by such actions. From the beginning to the end, upwelling asthenosphere controlled the layer ringed detachment between the lithosphere and the asthenosphere and between the crust and the mantle, the underplating, and the lithospheric deformation, shortening and extension as well as magmatic activities.