Research history,progress and prospects on the subduction erosion
Subduction erosion refers to the tectonic process where the subducting plate removes material from the overlying plate and transports it into the deep mantle.Previous research has indicated that subduction erosion is a widespread and important geodynamic process in the Cenozoic circum-Pacific subduction zones,and it also play an important role in the deformation of active continental margins,the generation of magmatic arcs,metallogenesis,crust-mantle material recycling,and the growth and evolution of continental crust.Basing on reviewing the previous research history,this paper succinctly delineates the fundamental model and controlling factors of subduction erosion and systematically summarizes the geological effects induced by subduction erosion,as well as the criteria for its identification.Then we analyzed and discussed the connection between subduction erosion,metallogenesis,and the evolution of continental crust.Moreover,we introduced the research progress on subduction erosion within China,and we analyzed two research examples identifying the Late Mesozoic subduction erosion processes along the Bangong-Nujiang Suture Zone and the Yarlung Zangbo Suture Zone in the Tibetan Plateau,which unveil that the southern margin of the Eurasian continent was an erosive-type convergence boundary during the Late Mesozoic.Finally,we proposed our thoughts and prospects on subdction erosion researches in the future.
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