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学科主题: Geochemistry & Geophysics
题名: The sedimentary and tectonic evolution of the Yinggehai-Song Hong basin and the southern Hainan margin, South China Sea: Implications for Tibetan uplift and monsoon intensification
作者: Clift, PD ; Sun, Z
通讯作者: p.clift@abdn.ac.uk
刊名: JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
发表日期: 2006
卷: 111, 期:B6, 页:-
收录类别: sci
部门归属: Univ Aberdeen, Kings Coll, Sch Geosci, Aberdeen AB24 3UE, Scotland; Univ Bremen, DFG, RCOM, Bremen, Germany; Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Peoples R China
项目归属: 海洋地质
摘要: [ 1] The Yinggehai - Song Hong basin is one of the world's largest pull-apart basins, lying along the trace of the Red River fault zone in the South China Sea. South of Hainan Island this basin crosscuts the rifted margin of the northern South China Sea. In this paper we present for the first time a regional compilation of multichannel seismic reflection data from both the strike slip and rifted margins. The basins started to open after similar to 45 Ma, especially after similar to 34 Ma. The Yinggehai basin was folded and inverted in the middle Miocene, after 21 Ma in the north and 14 Ma in the south, before rapidly subsiding again after similar to 5 Ma because of continued tectonism. This subsidence has caused shale diapirism, especially driven by associated sedimentation in the late Pliocene (2.6 - 2.0 Ma). Extension along the adjacent south Hainan margin shows preferential lower crustal extension, suggestive of lower crustal flow increasing toward the continent-ocean transition during breakup. Sediment supply is reconstructed to peak in the middle Miocene, then falls between 14 and 10.3 Ma to reach a low in the late Miocene. However, rates rose again in the Pliocene-Pleistocene. The Red River sediment budget is incompatible with climate models that propose stronger monsoon rains starting at 8 Ma or with large-scale river capture away from the Red River after similar to 10 Ma. Both lines of evidence point to major uplift in the Red River drainage being middle Miocene or older. The recent, preindustrial Red River carried much more sediment than the average Pleistocene accumulation rate, indicating modest sediment buffering onshore, at least in recent geologic time.
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WOS记录号: WOS:000238602200001
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4416
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Clift, PD; Sun, Z.The sedimentary and tectonic evolution of the Yinggehai-Song Hong basin and the southern Hainan margin, South China Sea: Implications for Tibetan uplift and monsoon intensification,JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2006,111(B6):-
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