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Discovery of a hidden Triassic Arc in the Southern South China Sea: Evidence for the breakaway of a ribbon continent with implications for the evolution of the Western Pacific margin

文献类型：期刊论文

作者Wei, Wu3,4; Liu, Chuan-Zhou3,4,5; Hou, Yi-Fei3,4; Deng, Cheng-Long3,4; Yan, Wen1,4; Li, Xian-Hua3,4,5; Chung, Sun-Lin2,6; Mitchell, Ross N.3
刊名TERRA NOVA
出版日期2021-09-01
页码8
关键词Arc volcanic rocks paleo-Pacific subduction ribbon continent South China Block South China Sea
ISSN号0954-4879
DOI10.1111/ter.12556
英文摘要Paleo-Pacific subduction generated a prolonged active continental margin along the coast of the South China Block (SCB). A Triassic magmatic gap was argued to have occurred and was ascribed to flat-slab subduction of an oceanic plateau. We study for the first time a >330-m-long core of typical arc volcanics dated at ca. 218 Ma from the Meiji Atoll in the southern South China Sea (SCS). Paleomagnetism suggests 4.1 degrees +/- 1.5 degrees of post-eruption southward drift. These observations clearly support the existence of a Triassic arc in the SCB and imply that part of the arc later split off and drifted southward during the opening of the SCS in the Oligocene. Our results better constrain the lateral extent of the proposed flat-slab subduction along the margin of the SCB. Moreover, we provide direct evidence of how the breakaway of ribbon continents operated in active continental margins, a recurrent scenario that has been invoked for Phanerozoic tectonics and continental growth throughout Asia.
WOS关键词FLAT-SLAB SUBDUCTION ; TECTONIC EVOLUTION ; SOURCE REGION ; PETROGENESIS ; PLUME ; AMALGAMATION ; INITIATION ; ISOTOPES ; PROVINCE ; BASALTS
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA13010106] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA13010102] ; National Science Fund for Distinguished Young Scholars[42025201]
WOS研究方向Geology
语种英语
WOS记录号WOS:000691700400001
出版者WILEY
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars
源URL[http://ir.iggcas.ac.cn/handle/132A11/102617]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Liu, Chuan-Zhou
作者单位1.Chinese Acad Sci, South China Sea Inst Oceanol, Innovat Acad South China Sea Ecol & Environm Engn, Key Lab Ocean & Marginal Sea Geol, Guangzhou, Peoples R China
2.Natl Taiwan Univ, Dept Geosci, Taipei, Taiwan
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China
6.Acad Sinica, Inst Earth Sci, Taipei, Taiwan
推荐引用方式
GB/T 7714		 Wei, Wu,Liu, Chuan-Zhou,Hou, Yi-Fei,et al. Discovery of a hidden Triassic Arc in the Southern South China Sea: Evidence for the breakaway of a ribbon continent with implications for the evolution of the Western Pacific margin[J]. TERRA NOVA,2021:8.
APA Wei, Wu.,Liu, Chuan-Zhou.,Hou, Yi-Fei.,Deng, Cheng-Long.,Yan, Wen.,...&Mitchell, Ross N..(2021).Discovery of a hidden Triassic Arc in the Southern South China Sea: Evidence for the breakaway of a ribbon continent with implications for the evolution of the Western Pacific margin.TERRA NOVA,8.
MLA Wei, Wu,et al."Discovery of a hidden Triassic Arc in the Southern South China Sea: Evidence for the breakaway of a ribbon continent with implications for the evolution of the Western Pacific margin".TERRA NOVA (2021):8.

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来源：地质与地球物理研究所

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