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Insights about the structure and development of Zhongsha Bank in the South China Sea from integrated geophysical modelling
Huang, Haibo1,2; He, Enyuan1,2; Qiu, Xuelin1,2; Guo, Xingwei3,4; Fan, Jianke5; Zhang, Xunhua3
2019-08-19
发表期刊INTERNATIONAL GEOLOGY REVIEW
ISSN0020-6814
页码11
通讯作者Guo, Xingwei(xwguo_qd@126.com)
摘要We construct a complete density transection based on the velocity structures across the Zhongsha Bank in the South China Sea. Gravity modelling of the lateral density contrasts between tectonic units helps us to determine the structural attributes and boundaries between continental blocks and deep basins. The configuration of the continent-ocean boundary (COB) around the Zhongsha Bank is mapped based on the gravity/magnetic anomaly and crustal structures. A low-density mantle is found beneath the Zhongsha Bank and the oceanic basins, and this mantle is associated with the high heat-flow background. The COB orientation is northeast-east in the north of the bank, with faulted linear structures. In further southeast, where there is a more intact crust, the COB orientation changed to north-northeast. The reconstructed density model and gravity/magnetic map indicate that the Zhongsha Bank is conjugated with the Liyue Bank by a rifted basin, where the crust had experienced localized deformation before the seafloor spreading. Because of the insufficient magmatism in the oceanic basin, the spreading ridge propagates into the weakened continental lithosphere between the two continental blocks, thus completely separating the Zhongsha Bank from the Liyue Bank. Seafloor spreading ridge jumps within the South China Sea may also be affected by the heterogeneous lithosphere beneath the continental blocks and oceanic basins.
关键词South China Sea Zhongsha Bank continental block geophysical modelling ridge propagation
DOI10.1080/00206814.2019.1653798
收录类别SCI
语种英语
资助项目National Natural Science Foundation of China[41306046] ; National Natural Science Foundation of China[41676045] ; Project of Geological and Geophysical Series Maps of China[GZH200900504] ; Guangdong NSF research team project[2017A030312002] ; National Natural Science Foundation of China[41306046] ; National Natural Science Foundation of China[41676045] ; Project of Geological and Geophysical Series Maps of China[GZH200900504] ; Guangdong NSF research team project[2017A030312002]
WOS研究方向Geology
WOS类目Geology
WOS记录号WOS:000482046800001
出版者TAYLOR & FRANCIS INC
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/162358
专题海洋地质与环境重点实验室
通讯作者Guo, Xingwei
作者单位1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China
2.Chiese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou, Guangdong, Peoples R China
3.Qingdao Inst Marine Geol, Qingdao, Shandong, Peoples R China
4.Qingdao Natl Lab Marine Sci & Technol, Evaluat & Detect Technol Lab Marine Resources, Qingdao 266235, Shandong, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, KEY Lab Marine Geol & Environm, Qingdao, Shandong, Peoples R China
第一作者单位中国科学院海洋研究所
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Huang, Haibo,He, Enyuan,Qiu, Xuelin,et al. Insights about the structure and development of Zhongsha Bank in the South China Sea from integrated geophysical modelling[J]. INTERNATIONAL GEOLOGY REVIEW,2019:11.
APA Huang, Haibo,He, Enyuan,Qiu, Xuelin,Guo, Xingwei,Fan, Jianke,&Zhang, Xunhua.(2019).Insights about the structure and development of Zhongsha Bank in the South China Sea from integrated geophysical modelling.INTERNATIONAL GEOLOGY REVIEW,11.
MLA Huang, Haibo,et al."Insights about the structure and development of Zhongsha Bank in the South China Sea from integrated geophysical modelling".INTERNATIONAL GEOLOGY REVIEW (2019):11.
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