Integrated geophysical research on the tectonic attribute of conjugate continental margin of South China Sea

doi:10.3969/j.issn.0001-5733.2011.12.011

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	Integrated geophysical research on the tectonic attribute of conjugate continental margin of South China Sea
	Hao Tian-Yao 1; Xu Ya 1; Sun Fu-Li 1; You Qing-Yu 1; Lu Chuan-Chuan 1; Huang Song 1; Qiu Xue-Lin 2; Hu Wei-Jian 1; Zhao Ming-Hui 2
	2011-12-01
发表期刊	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN	0001-5733
卷号	54 期号:12 页码:3098-3116
文章类型	Article
摘要	In this paper, the density and magnetic structure of six profiles in South China Sea was inversed based on the latest potential field data and the rock physical property analysis. The constraint information from the ocean bottom seismometer (OBS) data and multi-channel seismic (MCS) results was used in the inversion process. And the FF' profile used the latest MCS data colleted in 2009 by the 973 project. Based on the MCS data, the interval velocity is computed and the structure model is used for the gravity modeling. Based on the deep structure analysis and the density/magnetic structure of the six profiles in this paper, the tectonic attribution of the northern and the southern margins of the South China Sea are more like non-volcanic continental margin. There exists high density layer in the lower crust accompanied with active magma activity to the east of CC' profile in north margin of SCS. But it is lack of the seaward dipping reflectors in this region. So we deduce that the high density layer in lower crust is the result of splitting of the continental margin after the sea floor spreading, which is same as the magmatic rocks in shallow layer. The magnetic basement and the deep structure of the Zhongsha Uplift and Liyue basin are quiet similar. It was deduced that they were the same block before the pull of sea basin. They are a pair of conjugate points of the northern and southern margins of the South China Sea. The integrated geophysical interpretation of southern margin of southwest sub-sea basin indicated that the Mesozoic group can be found near the base of slope but they may be not continuous.
关键词	South China Sea Conjugate continental margin Tectonic attribute Integrated geophysical interpretation
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.3969/j.issn.0001-5733.2011.12.011
关键词[WOS]	CRUSTAL STRUCTURE ; PROFILE
收录类别	SCI
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000298906400011
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.iggcas.ac.cn/handle/132A11/74755
专题	中国科学院地质与地球物理研究所
通讯作者	Hao Tian-Yao
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Chinese Acad Sci, S China Sea Inst Oceang, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Hao Tian-Yao,Xu Ya,Sun Fu-Li,et al. Integrated geophysical research on the tectonic attribute of conjugate continental margin of South China Sea[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2011,54(12):3098-3116.
APA	Hao Tian-Yao.,Xu Ya.,Sun Fu-Li.,You Qing-Yu.,Lu Chuan-Chuan.,...&Zhao Ming-Hui.(2011).Integrated geophysical research on the tectonic attribute of conjugate continental margin of South China Sea.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,54(12),3098-3116.
MLA	Hao Tian-Yao,et al."Integrated geophysical research on the tectonic attribute of conjugate continental margin of South China Sea".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 54.12(2011):3098-3116.