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学科主题: Geosciences, Multidisciplinary
题名: 3D analogue modeling of the South China Sea: A discussion on breakup pattern
作者: Sun, Z ; Zhong, ZH ; Keep, M ; Zhou, D ; Cai, DS ; Li, XS ; Wu, SM ; Jiang, JQ
通讯作者: smwu@scsio.ac.cn
关键词: South China Sea ; Breakup pattern ; 3D analogue modeling
刊名: JOURNAL OF ASIAN EARTH SCIENCES
发表日期: 2009
卷: 34, 期:4, 页:544-556
收录类别: sci
部门归属: [Sun, Zhen; Zhou, Di; Wu, Shimin] Chinese Acad Sci, S China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Zhong, Zhihong] Shenzhen Branch CNOOC, Dept Sci & Technol, Guangzhou 510420, Guangdong, Peoples R China; [Keep, Myra] Univ Western Australia, Tecton Special Res Ctr, Nedlands, WA 6907, Australia; [Cai, Dongsheng; Li, Xushen] Zhanjiang Branch CNOOC, Dept Sci & Technol, Zhanjiang 524057, Peoples R China; [Jiang, Jianqun] Hainan Oil & Gas Explorat Co, Liaohe Oilfield PetroChina, Panjin 124010, Peoples R China
项目归属: 海洋地质
摘要: The opening of the South China Sea is one of the most important Cenozoic events in SE Asia. In order to investigate its tectonic evolution, three analogue modeling experiments were compared. The modeling results suggest that rifting pattern and orientation change of the rift zone were related to initial theological stratification. Affected by the ductile flow of silicone (lower crust) and honey (asthenosphere), the faults became flattened, especially close to the breakup area. We conjecture that the slope area may bear relatively hotter and thinner lithosphere than the shelf area from the beginning of rifting due to stretching and mantle upwelling associated with this regional extension, which in turn lead to the change in initial rheological stratification and therefore the rifting pattern from shelf to slope. In the experiments, breakup developed first at isolated points, which grew and coalesced to become a single spreading area. The conjugate boundaries were either all concave or all convex. Where a rigid massif was located at the divergent boundary, stretching history was different. in this case, the northern and southern areas thinned rapidly and developed into two deep troughs, which may finally evolve into spreading centers. The shape of the massif controls the orientation and boundary shape of the spreading area. It is interpreted that crustal breakup was more viscous in style, and the NW sub sea basin developed along the northern trough of the Zhongsha-Xisha massif (Macclesfield Bank). (C) 2008 Elsevier Ltd. All rights reserved.
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WOS记录号: WOS:000263500400005
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4660
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; Zhong, ZH; Keep, M; Zhou, D; Cai, DS; Li, XS; Wu, SM; Jiang, JQ.3D analogue modeling of the South China Sea: A discussion on breakup pattern,JOURNAL OF ASIAN EARTH SCIENCES,2009,34(4):544-556
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