晚中生代以来南海的形成与演化述评

IF 4.6 3区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

China Geology Pub Date : 2023-01-01 DOI:10.31035/cg2022021

Xue-jie Li , Zhe Wang , Yong-jian Yao , Hong-fang Gao , Song Zhu , Zi-ying Xu

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引用次数: 0

摘要

现有的南海成因模式包括中南半岛挤压模式、弧后伸展模式和原南海俯冲拖曳模式。然而，这些模型都没有被普遍接受，因为它们与大量的地质现象和事实并不完全匹配。通过对区域构造的研究，并将其与SCS的实测数据相结合，提出了一个弧后扩展左旋剪切模型。结果表明，南海是由PSCS向北俯冲形成的弧后盆地，其形成是由菲律宾海板块向北漂移引起的左旋走滑运动触发的。印度-欧亚碰撞引起的西缘左旋走滑断层使西南次盆地的扩展轴方向从近东西向变为东北-西南，俯冲后退使扩展脊向南跳跃。本研究总结了中生代晚期以来南海及其邻近地区的演化。©2023中国地质编辑部。

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Formation and evolution of the South China Sea since the Late Mesozoic: A review

The existing genetic models of the South China Sea (SCS) include an extrusion model of the Indochina Peninsula, a back-arc extension model, and a subduction and dragging model of the Proto-South China Sea (PSCS). However, none of these models has been universally accepted because they do not fully match a large number of geological phenomena and facts. By examining the regional tectonics and integrating them with measured data for the SCS, in this study, a back-arc spreading-sinistral shear model is proposed. It is suggested that the SCS is a back-arc basin formed by northward subduction of the PSCS and its formation was triggered by left-lateral strike-slip motion due to the northward drift of the Philippine Sea Plate. The left-lateral strike-slip fault on the western margin caused by the Indo-Eurasian collision changed the direction of the Southwest Sub-basin’s spreading axis from nearly E–W to NE–SW, and subduction retreat caused the spreading ridge to jump southward. This study summarizes the evolution of the SCS and adjacent regions since the Late Mesozoic.

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来源期刊

China Geology GEOLOGY-

CiteScore

7.80

自引率

11.10%

发文量

275

审稿时长

16 weeks