摘要
Rifted continental margins play a crucial role in understanding Earth’s tectonics[1].Their significance extends beyond elucidating the mechanisms of continental rifting and plate tectonics;they also hold substantial potential as reservoirs for mineral resources,hydrocarbons,and geothermal energy[2].The South China Sea(SCS)has undergone a comprehensive sequence of lithospheric stretching,thinning,breakup,and the formation of new oceanic crust.Unlike the classic magma-rich and magma-poor end-members observed in different parts of the Atlantic,the SCS rifted margin is considered to be of an intermediate type[3].In addition,the continental margin of the SCS was formed associated with the Late Mesozoic subduction of the paleo-Pacific Plate and subsequently underwent rifting tectonic transformation.The eastern,western,and southern sides of the SCS are now bordered by two major subduction zones:the western Pacific and the Indian Ocean[4].This evolutionary trajectory underpins a tectonic system fundamentally distinct from the Atlantic-type rifted margins,and a concept of SCS plate-edge rifting was proposed[5].
基金
National Key Research and Development Program of China(2022YFC3102200)
National Natural Science Foundation of China(42076071,42106071,and 42376070)
Special Fund of South China Sea Institute of Oceanology of the Chinese Academy of Sciences(SCSIO2023QY06)
Guangdong Basic and Applied Basic Research Foundation(2022A1515012019).
