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学科主题: Geochemistry & Geophysics
题名: Experimental evidence for the dynamics of the formation of the Yinggehai basin, NW South China Sea
作者: Sun, Z ; Zhou, D ; Zhong, ZH ; Zeng, ZX ; Wu, SM
关键词: Yinggehai basin ; rifting structure ; depocenter migration ; analogue modeling ; dynamics of basin formation
刊名: TECTONOPHYSICS
发表日期: 2003
卷: 372, 期:40545, 页:41-58
收录类别: sci
部门归属: Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Peoples R China; Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China; China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China
项目归属: 海洋地质
摘要: The Yinggehai basin is located on the northwestern shelf of the South China Sea. It is the seaward elongation of the Red River Fault Zone (RRFZ). The orientation and rift shape of the Yinggehai basin are mainly controlled by NW-, NNW- and nearly NS-trending basal faults. The depocenter migrated southeastward when the basin developed. The depocenter trended northwest before about 36 Ma, then jumped southward and became nearly N-S trending and migrated toward the southeast up to 21 Ma; thereafter, the depocenter trended northwest again. Based on above and structural evolution in neighbor areas, it is believed that the Yinggehai basin formation was mainly controlled by the extrusion accompanied by clockwise rotation of Indochina. We set up analogue models (thin basal plate model and thick basal plate model) to investigate the evolution of Yinggehai basin. From the experiments, we consider that the basin evolution was related to the extrusion and clockwise rotation of the Indochina block, which was caused by the collision of the Indian plate and Tibet. This process took place in four main stages: (1) Slow rifting stage (before 36 Ma) with a NW-trending depocenter; (2) rifting stage formed by sinistral slip of the Indochina block accompanied by rapid clockwise rotation between 36 and 21 Ma; (3) rifting-thermal subsidence stage affected by sinistral slip of the Indochina (21-5 Ma) block and (4) dextral strike-slip (5-0 Ma). (C) 2003 Elsevier B.V. All rights reserved.
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WOS记录号: WOS:000185448000003
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4752
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Sun, Z; Zhou, D; Zhong, ZH; Zeng, ZX; Wu, SM.Experimental evidence for the dynamics of the formation of the Yinggehai basin, NW South China Sea,TECTONOPHYSICS,2003,372(40545):41-58
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