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学科主题: Geochemistry & Geophysics
题名: Shallow anatomy of a continent-ocean transition zone in the northern South China Sea from multichannel seismic data
作者: Zhu, JJ ; Qiu, XL ; Kopp, H ; Xu, HL ; Sun, ZX ; Ruan, AG ; Sun, JL ; Wei, XD
通讯作者: jzhu@scsio.ac.cn ; xlqiu@scsio.ac.cn ; hkopp@geomar.de ; hlxu@scsio.ac.cn ; sunzx@scsio.ac.cn ; ruanag@163.com ; sunjl@scsio.ac.cn ; xdwei@scsio.ac.cn
关键词: Continent ocean transition zone ; Multi-channel seismic data ; South China Sea ; Continental passive margins
刊名: TECTONOPHYSICS
发表日期: 2012
卷: 554, 页:18-29
部门归属: [Zhu, Junjiang; Qiu, Xuelin; Xu, Huilong; Sun, Zongxun; Sun, Jinlong; Wei, Xiaodong] Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Peoples R China; [Kopp, Heidrun] Helmholtz Ctr Ocean Res Kiel GEOMAR, D-24148 Kiel, Germany; [Ruan, Aiguo] SOA, Inst Oceanog 2, Hangzhou 310012, Zhejiang, Peoples R China
项目归属: 海洋地质
摘要: The Cenozoic tectonic evolution of the South China Sea is reflected in diverse tectonic processes including continental rifting, seafloor spreading, subduction, terrane collision and strike-slip fault movement. A continent-ocean transition zone in the northern South China Sea caused by the lithospheric extension when the continent underwent break-up, rifting and later seafloor spreading, is clearly imaged in the multi-channel seismic data presented in this study. The morphological units of the continent-ocean transition zone are the rift-depression, the volcanic zone and tilted fault blocks. The volcanic zone represents a highest extension zone within the continent-ocean transition zone and is mainly distributed in the southern slope uplift zone along the northern passive margin of the South China Sea. The large listric-normal faults bounding the Dongsha Rise and Baiyun Sag are evidenced in the seismic image. The passive margin in the northern South China Sea underwent the wide-rift to narrow-rift process in the transition zone as inferred from the relation between the surface heat flow and initial rifted crustal thickness. The continent-ocean transition zone in the continental margin of the South China Sea is consistent with high heat flow zone (average 90 mW.m(-2)) observed in the previous heat flow measurements and at ODP Site 1148, and is manifested in a sharp change of the P-wave velocity. The rifted margin of the South China Sea is a non-typical magma poor passive margin or an intermediary form between the Iberian-type non-volcanic and the Greenland-type volcanic margin compared to the world's typical passive margins. (C) 2012 Elsevier B.V. All rights reserved.
语种: 英语
WOS记录号: WOS:000307136900002
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10325
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:
Zhu, JJ; Qiu, XL; Kopp, H; Xu, HL; Sun, ZX; Ruan, AG; Sun, JL; Wei, XD.Shallow anatomy of a continent-ocean transition zone in the northern South China Sea from multichannel seismic data,TECTONOPHYSICS,2012,554():18-29
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