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Prolonged post-rift magmatism on highly extended crust of divergent continental margins (Baiyun Sag, South China Sea)
Zhao, Fang; Alves, Tiago M.; Wu, Shiguo; Li, Wei; Huuse, Mads; Mi, Lijun; Sun, Qiliang; Ma, Benjun; Wu, SG; Li, W (reprint author), Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China.; Li, W (reprint author), Univ Kiel, Inst Geosci, D-24188 Kiel, Germany.
2016
发表期刊EARTH AND PLANETARY SCIENCE LETTERS
卷号445页码:79-91
摘要Three-dimensional (3D) seismic, borehole and geochemical data reveal a prolonged phase of post-rift magmatism on highly extended crust of the Baiyun Sag, South China Sea. Two volcanic complexes are identified and described in the context of continental rifting and diachronous continental breakup of the South China Sea. Biostratigraphic data from exploration wells BY7-1 and BY2, complemented by K-Ar datings from core samples, confirm that magmatic activity in the Baiyun Sag occurred in two main stages: (1) a first episode at the base of the Miocene (23.8 Ma); and (2) a second episode occurring at the end of the Early Miocene (17.6 Ma). The relative location of volcanic complexes in the Baiyun Sag, and their stratigraphic position, reveals prolonged magmatism inboard of the ocean-continent transition zone during continental breakup. We suggest that magmatism in the Baiyun Sag reflects progressive continental breakup in the South China Sea, with the last volcanic episode marking the end of a breakup sequence representing the early post-rift tectonic events associated with the continental breakup process. Seismic and borehole data from this breakup sequence records diachronous magma emplacement and complex changes in depositional environments during continental breakup. (C) 2016 The Authors. Published by Elsevier B.V.
部门归属[Zhao, Fang] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Alves, Tiago M.] Cardiff Univ, Sch Earth & Ocean Sci, Seism Lab 3D, Main Bldg,Pk Pl, Cardiff CF10 3AT, S Glam, Wales; [Wu, Shiguo; Li, Wei] Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China; [Li, Wei] Univ Kiel, Inst Geosci, D-24188 Kiel, Germany; [Huuse, Mads] Univ Manchester, Sch Earth Atmospher & Environm Sci, Manchester M13 9PL, Lancs, England; [Mi, Lijun] CNOOC, Dept Explorat, Beijing 100010, Peoples R China; [Sun, Qiliang] China Univ Geosci, Minist Educ, Key Lab Tecton & Petr Resources, Wuhan 430074, Peoples R China; [Ma, Benjun] Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China; [Ma, Benjun] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
关键词South China Sea Continental Margin Breakup Sequence Magma Volcanic Edifices
学科领域Geochemistry & Geophysics
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15447
专题中科院边缘海地质重点实验室
通讯作者Wu, SG; Li, W (reprint author), Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China.; Li, W (reprint author), Univ Kiel, Inst Geosci, D-24188 Kiel, Germany.
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GB/T 7714
Zhao, Fang,Alves, Tiago M.,Wu, Shiguo,et al. Prolonged post-rift magmatism on highly extended crust of divergent continental margins (Baiyun Sag, South China Sea)[J]. EARTH AND PLANETARY SCIENCE LETTERS,2016,445:79-91.
APA Zhao, Fang.,Alves, Tiago M..,Wu, Shiguo.,Li, Wei.,Huuse, Mads.,...&Li, W .(2016).Prolonged post-rift magmatism on highly extended crust of divergent continental margins (Baiyun Sag, South China Sea).EARTH AND PLANETARY SCIENCE LETTERS,445,79-91.
MLA Zhao, Fang,et al."Prolonged post-rift magmatism on highly extended crust of divergent continental margins (Baiyun Sag, South China Sea)".EARTH AND PLANETARY SCIENCE LETTERS 445(2016):79-91.
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