Geodynamics of the Ocean-Continent Transition Zone, Northern Margin of the South China Sea: Implications for the Opening of the South China Sea
详细信息
- 责任者：Lei Chao (Key Laboratory of Tectonics and Petroleum Resources ; Ministry of Education ; China University of Geosciences ; Wuhan 430074 ; China) ; Ren Jianye
- 刊名：Chinese Journal of Geophysics
- 出版年：2013
- 卷期：56(4)
- 关键词：转换断层 ; transform faults ; 大陆边缘 ; continental margins ; 南海 ; South China Sea
- 页码：p.1287-1299
- 图表：illus., 62 refs.
- 分类号：0300
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
Synthesis of deep seismic and potential field data from the northern rifted margin of the South China Sea shows that the ocean-continent transition zone(OCT) is a kilometer-scale wide zone between the shelf-break and ocean floor.We present the results from processing and interpreting one multichannel deep-penetration seismic reflection line collected during the late 2000s.A numerical backstripping calculation using 2D models flexural cantilever and sediment decompaction was performed in our study.The results show the stretching factors of the upper crust,the whole crust and the whole lithosphere are different,which indicates depth-dependent extension on the OCT of the northern margin of the South China Sea.Compared with the faulting in the upper crust,the larger extension factor of whole lithosphere has an important effect on the fast subsidence recognized in recent years.In our study,three stages of evolution of basins on the OCT of the South China Sea are established.They are the rifting in the continent,post-rifted thermal subsidence and post-rift fast subsidence stages.This work can improve understanding of the development and evolution of the South China Sea,and has significance for geodynamic research of the continental margins and petroleum exploration in the deepwater areas of the South China Sea.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |