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学科主题: Geosciences, Multidisciplinary
题名: Filling History and Post-Breakup Acceleration of Sedimentation in Baiyun Sag, Deepwater Northern South China Sea
作者: Zhou, D ; Sun, Z ; Liao, J ; Zhao, ZX ; He, M ; Wu, XJ ; Pang, X
通讯作者: zhoudiscs@scsio.ac.cn
关键词: filling history ; post-breakup acceleration of sedimentation ; Baiyun sag ; deepwater basin ; South China Sea
刊名: JOURNAL OF EARTH SCIENCE
发表日期: 2009
卷: 20, 期:1, 页:160-171
收录类别: sci
部门归属: [Zhou Di; Sun Zhen; Liao Jie; Zhao Zhongxian] Chinese Acad Sci, Key Lab Marginal Sea Geol, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [He Min; Wu Xiangjie; Pang Xiong] China Natl Offshore Oil Corp, Inst Sci & Technol, Shenzhen Branch, Guangzhou 510420, Guangdong, Peoples R China
项目归属: 海洋地质
摘要: The Baiyun (sic) sag in the southern Pearl River Mouth basin is the largest and deepest sag in deepwater northern South China Sea. Researches and exploration in this sag have revealed many distinct features of the sag. This article reports its filling history through backstripping of depth data of interpreted sequence boundaries. Maps of sediment rates of 10 sequences from 49 Ma to the present were constructed, showing the spatio-temporal variation of the sediment rate. Three stages of sediment infilling, 49-17.5 Ma, 17.5-10.5 Ma, and 10.5-0 Ma, were divided by abrupt changes of sedimentary patterns. If the breakup of the South China Sea took place at similar to 30 Ma, significant post-breakup acceleration of sedimentation was observed at 17.5-15.5 Ma and 13.8-12.5 Ma, indicating acceleration of subsidence at these times. We propose that the onset of strong post-breakup subsidence at similar to 17.5 Ma was an important tectonic event that changed the pattern of sedimentation from discrete and medium-rate deposition centers in both main and south subsags to restricted but high-rate deposition in the main subsag. The cause and implications of this newly recognized event need to-be investigated.
原文出处: 查看原文
WOS记录号: WOS:000264753800016
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4648
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Recommended Citation:
Zhou, D; Sun, Z; Liao, J; Zhao, ZX; He, M; Wu, XJ; Pang, X.Filling History and Post-Breakup Acceleration of Sedimentation in Baiyun Sag, Deepwater Northern South China Sea,JOURNAL OF EARTH SCIENCE,2009,20(1):160-171
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