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DOI	10.1016/j.jseaes.2013.05.022
	A possible mechanism for the initiation of the Yinggehai Basin: A visco-elasto-plastic model
	Wang, Xinguo; He, Jiankun; Ding, Lin; Gao, Risheng
通讯作者	Wang, XG (通讯作者)
发表日期	2013
ISSN	1367-9120
EISSN	1878-5786
起始页码	25
结束页码	36
卷号	74
英文摘要	The Yinggehai Basin, lying along the trace of the Red River fault zone in the South China Sea, has been related to the movements of the Red River fault zone and the rotation of the Indochina block. However, the tectonic origin of the Yinggehai Basin remains unclear. This paper explores the initiation of the Yinggehai Basin using a visco-elasto-plastic model. This model concentrates on two main aspects: lateral viscosity variations (mainly controlled by temperature) in the lithosphere and internal friction angles of the pre-existing fault zone. Modeling results show that: (1) for a layered viscosity, en echelon faults would likely form when there is no pre-existing strike-slip fault; whereas, the basin would be narrow and deep, if any, when there is a pre-existing fault; (2) for moderate lateral viscosity variations, a large basin forms, even without a pre-existing fault zone; and (3) for strong lateral viscosity variations, a major rift could form over geologic time. Our results indicate that the initiation of the Yinggehai Basin requires moderate lateral viscosity variations (i.e., a pre-existing gentle upwelling of the Mohorovicic discontinuity) but no pre-existing fault. In addition, the initial extension predicted is NE-SW and is generated by the rotation of the Indochina block. This differs from the NW-SE extension that resulted from the movements of the Red River fault zone. This indicates that the left-lateral displacements of the Red River fault zone and the spreading of the South China Sea only influence the basin evolution after its initiation. (C) 2013 Elsevier Ltd. All rights reserved.
关键词	SOUTH CHINA SEA RIVER SHEAR ZONE CENOZOIC PLATE RECONSTRUCTION RED-RIVER TECTONIC EVOLUTION CONTINENTAL EXTRUSION FAULT SYSTEM SLIP RATES COLLISION YUNNAN
英文关键词	The Yinggehai Basin; The Red River fault; The South China Sea; Finite-element modeling; The Tibetan Plateau
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000324663500003
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258135
推荐引用方式 GB/T 7714	Wang, Xinguo,He, Jiankun,Ding, Lin,et al. A possible mechanism for the initiation of the Yinggehai Basin: A visco-elasto-plastic model[J]. 中国科学院青藏高原研究所,2013,74.
APA	Wang, Xinguo,He, Jiankun,Ding, Lin,&Gao, Risheng.(2013).A possible mechanism for the initiation of the Yinggehai Basin: A visco-elasto-plastic model.JOURNAL OF ASIAN EARTH SCIENCES,74.
MLA	Wang, Xinguo,et al."A possible mechanism for the initiation of the Yinggehai Basin: A visco-elasto-plastic model".JOURNAL OF ASIAN EARTH SCIENCES 74(2013).