Patterns and Dynamics of Rifting on Passive Continental Margin from Shelf to Slope of the Northern South China Sea: Evidence from 3D Analogue Modeling

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院边缘海地质重点实验室

	Patterns and Dynamics of Rifting on Passive Continental Margin from Shelf to Slope of the Northern South China Sea: Evidence from 3D Analogue Modeling
	Sun, Z ; Zhou, D ; Wu, SM ; Zhong, ZH ; Myra, K ; Jiang, JQ ; Fan, H
刊名	JOURNAL OF EARTH SCIENCE
	2009
卷号	20 期号:1 页码:136-146
关键词	passive continental margin rifting pattern 3D analogue modeling South China Sea
ISSN号	1674-487X
通讯作者	smwu@scsio.ac.cn
中文摘要	Affected by thermal perturbation due to mantle uprising, the rheological structure of the lithosphere could be modified, which could lead to different rifting patterns from shelf to slope in a passive continental margin. From the observed deformation style on the northern South China Sea and analogue modeling experiments, we rind that the rift zone located on the shelf is characterized by half grabens or simple grabens controlled mainly by long faults with large vertical offset, supposed to be formed with normal lithosphere extension. On the slope, where the lithosphere is very hot due to mantle upwelling and heating, composite grabens composed of symmetric grabens developed. The boundary and inner faults are all short with small vertical offset. Between the zones with very hot and normal lithosphere, composite half grabens composed of half grabens or asymmetric grabens formed, whose boundary faults are long with large vertical offset, while the inner faults are relatively short. Along with the thickness decrease of the brittle upper crust due to high temperature, the deformation becomes more sensitive to the shape of a pre-existing weakness zone and shows orientation variation along strike. When there was a bend in the pre-existing weakness zone, and the basal plate was pulled by a clockwise rotating stress, the strongest deformation always occurs along the middle segment and at the transition area from the middle to the eastern segments, which contributes to a hotter lithosphere in the middle segment, where the Baiyun (sic) sag formed. KEY WORDS: passive continental margin, rifting pattern, 3D analogue modeling, South China Sea.
学科主题	Geosciences, Multidisciplinary
收录类别	SCI
原文出处	CHINA UNIV GEOSCIENCES
WOS记录号	WOS:000264753800014
公开日期	2011-07-03
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/4644]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	Sun, Z,Zhou, D,Wu, SM,et al. Patterns and Dynamics of Rifting on Passive Continental Margin from Shelf to Slope of the Northern South China Sea: Evidence from 3D Analogue Modeling[J]. JOURNAL OF EARTH SCIENCE,2009,20(1):136-146.
APA	Sun, Z.,Zhou, D.,Wu, SM.,Zhong, ZH.,Myra, K.,...&Fan, H.(2009).Patterns and Dynamics of Rifting on Passive Continental Margin from Shelf to Slope of the Northern South China Sea: Evidence from 3D Analogue Modeling.JOURNAL OF EARTH SCIENCE,20(1),136-146.
MLA	Sun, Z,et al."Patterns and Dynamics of Rifting on Passive Continental Margin from Shelf to Slope of the Northern South China Sea: Evidence from 3D Analogue Modeling".JOURNAL OF EARTH SCIENCE 20.1(2009):136-146.