Early Cretaceous compressive structures in the Nansha block (Dangerous Grounds): Implications for the late Mesozoic tectonic regime on the southern margin of the South China Sea

Schematic late Mesozoic tectonic evolution of SE Asia. The convergence between the Luconia block and the South China continent emerged approximately between 128.5 Ma and 79.5 Ma. SCC: South China continent; DS: Dongsha volcanic arc; CS: Chaoshan Depression; LB (RB): Liyue Bank (Reed Bank); SWB: SW Borneo; NWS: NW Sulawesi; PPO: Paleo-Pacific Ocean; PSCS: proto-South China Sea (the remnant oceanic crust of the Paleo-Pacific Ocean).