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Stretching characteristics and its dynamic significance of the northern continental margin of South China Sea
Zhang, YF; Sun, Z; Zhou, D; Guo, XW; Shi, XB; Wu, XJ; Pang, X; zhensun@scsio.ac.cn
2008
发表期刊SCIENCE IN CHINA SERIES D-EARTH SCIENCES
ISSN1006-9313
卷号51期号:3页码:422-430
摘要To investigate the thinning of the whole crust, and the contribution of the upper versus lower crust to the stretching since Cenozoic, we calculated the stretching factor of the northern margin of South China Sea with data such as whole crustal thickness, depth of Cenozoic sedimentary basement and the horizontal displacement of faults. An isometric line drawing on whole crustal stretching factor is then obtained. Along the seismic Line 1530 in Baiyun sag, we also calculated the stretching factors of the upper and lower crust. The results suggest that the whole crustal thickness decreases seaward while the whole crustal stretching factor increases from shelf to slope. The Moho upwells highest beneath where the crust is thinned most. The value of the whole crustal stretching factor ranges from 1.5 to 6. Two areas were thinned intensely: the center of Yinggehai Basin, and the Baiyun sag in the Pearl River Mouth Basin. The calculation of the upper and lower crustal stretching factors from DSP1530 in Baiyun sag shows that the original crust of Baiyun sag should be thinned before deformation. Its pre-Cenozoic evolution as well as tectonic position during Cenozoic might be responsible for that.
部门归属[Zhang YunFan; Sun Zhen; Zhou Di; Shi XiaoBin] Chinese Acad Sci, S China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Peoples R China; [Zhang YunFan] Grad Univ, Chinese Acad Sci, Beijing 100049, Peoples R China; [Guo XingWei] China Geol Survey, Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China; [Wu XiangJie; Pang Xiong] China Ltd Shenzhen, China Natl Offshore Oil Corp, Guangzhou 510240, Peoples R China
关键词Stretching Factor The norThern Continental Margin Of South China Sea Upper Crust Lower Crust Original Hot Thinned Crust Baiyun Sag
学科领域Geosciences, Multidisciplinary
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收录类别sci
资助项目海洋地质
WOS记录号WOS:000253527000011
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被引频次:20[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4576
专题中科院边缘海地质重点实验室
通讯作者zhensun@scsio.ac.cn
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GB/T 7714
Zhang, YF,Sun, Z,Zhou, D,et al. Stretching characteristics and its dynamic significance of the northern continental margin of South China Sea[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2008,51(3):422-430.
APA Zhang, YF.,Sun, Z.,Zhou, D.,Guo, XW.,Shi, XB.,...&zhensun@scsio.ac.cn.(2008).Stretching characteristics and its dynamic significance of the northern continental margin of South China Sea.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,51(3),422-430.
MLA Zhang, YF,et al."Stretching characteristics and its dynamic significance of the northern continental margin of South China Sea".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 51.3(2008):422-430.
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