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学科主题: Geosciences, Multidisciplinary
题名: Stretching characteristics and its dynamic significance of the northern continental margin of South China Sea
作者: Zhang, YF ; Sun, Z ; Zhou, D ; Guo, XW ; Shi, XB ; Wu, XJ ; Pang, X
通讯作者: zhensun@scsio.ac.cn
关键词: stretching factor ; the northern continental margin of South China Sea ; upper crust ; lower crust ; original hot thinned crust ; Baiyun sag
刊名: SCIENCE IN CHINA SERIES D-EARTH SCIENCES
发表日期: 2008
卷: 51, 期:3, 页:422-430
收录类别: sci
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
项目归属: 海洋地质
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.
原文出处: 查看原文
WOS记录号: WOS:000253527000011
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4576
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Zhang, YF; Sun, Z; Zhou, D; Guo, XW; Shi, XB; Wu, XJ; Pang, X.Stretching characteristics and its dynamic significance of the northern continental margin of South China Sea,SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2008,51(3):422-430
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