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Filling History and Post-Breakup Acceleration of Sedimentation in Baiyun Sag, Deepwater Northern South China Sea
Zhou, D; Sun, Z; Liao, J; Zhao, ZX; He, M; Wu, XJ; Pang, X; zhoudiscs@scsio.ac.cn
2009
发表期刊JOURNAL OF EARTH SCIENCE
ISSN1674-487X
卷号20期号:1页码:160-171
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.
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
关键词Filling History Post-breakup Acceleration Of Sedimentation Baiyun Sag Deepwater Basin South China Sea
学科领域Geosciences, Multidisciplinary
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收录类别sci
资助项目海洋地质
WOS记录号WOS:000264753800016
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被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4648
专题中科院边缘海地质重点实验室
通讯作者zhoudiscs@scsio.ac.cn
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Zhou, D,Sun, Z,Liao, J,et al. Filling History and Post-Breakup Acceleration of Sedimentation in Baiyun Sag, Deepwater Northern South China Sea[J]. JOURNAL OF EARTH SCIENCE,2009,20(1):160-171.
APA Zhou, D.,Sun, Z.,Liao, J.,Zhao, ZX.,He, M.,...&zhoudiscs@scsio.ac.cn.(2009).Filling History and Post-Breakup Acceleration of Sedimentation in Baiyun Sag, Deepwater Northern South China Sea.JOURNAL OF EARTH SCIENCE,20(1),160-171.
MLA Zhou, D,et al."Filling History and Post-Breakup Acceleration of Sedimentation in Baiyun Sag, Deepwater Northern South China Sea".JOURNAL OF EARTH SCIENCE 20.1(2009):160-171.
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