Magmatic switch-on and switch-off along the South China continental margin since the Permian: Transition from an Andean-type to a Western Pacific-type plate boundary

doi:10.1016/j.tecto.2012.02.011

	Magmatic switch-on and switch-off along the South China continental margin since the Permian: Transition from an Andean-type to a Western Pacific-type plate boundary
	Li, Zheng-Xiang 1,2; Li, Xian-Hua 3; Chung, Sun-Lin 4; Lo, Ching-Hua 4; Xu, Xisheng 5; Li, Wu-Xian 6
刊名	TECTONOPHYSICS
	2012-04-06
卷号	532 页码:271-290
关键词	Flat-slab subduction Western Pacific-type plate margin Andean-type plate margin South China Mesozoic Arc initiation
ISSN号	0040-1951
DOI	10.1016/j.tecto.2012.02.011
文献子类	Article
英文摘要	Detrital zircon provenance data for the Tananao schist in eastern Taiwan is consistent with its protolith being deposited on the South China continental margin at around, or soon after, 150 Ma, rather than being of an exotic origin and much older as previously suggested. The absence of ca. 200 Ma zircons agrees with the presence of a magmatic gap in the region after the orogenic and magmatic front migrated to central South China, due to a flat-slab subduction. The characteristic lack of input from interior South China (i.e., the lack of 1100-750 Ma and 470-420 Ma populations), and the immature nature of some of the schist units, suggest that they were sourced from the nearby coastal regions. On the other hand, they exhibit a dominant 190-150 Ma magmatic zircon population, suggesting the presence of abundant magmatic rocks of that age along the coastal regions. This, along with our newly discovered ca. 180 Ma I-type granites from eastern Zhejiang and other ca. 190-180 Ma magmatic rocks recently reported from the coastal regions, led us to propose that a new-continental arc was initiated after ca. 190 Ma along the coastal region after a magmatic gap due to flat-slab subduction. This newly initiated arc likely persisted until ca. 90 Ma, and is represented by the I-type granitic rocks in eastern Taiwan. Slab roll-back likely caused the arc system to retreat towards the Pacific Ocean after 90 Ma, and ca. 60-17 Ma bimodal magmatism adjacent to the South China Sea signifies continental margin extension in the lead-up to, and during, the opening of the South China Sea. We thus argue that the continental margin of East Asia was transformed from an Andean-type plate margin at 280-90 Ma, to the present-day Western Pacific-type plate margin soon after 90 Ma. (C) 2012 Elsevier B.V. All rights reserved.
WOS关键词	U-PB GEOCHRONOLOGY ; S-TYPE GRANITES ; TECTONIC SIGNIFICANCE ; SOUTHEASTERN CHINA ; JIANGXI PROVINCE ; VOLCANIC-ROCKS ; TAIWAN REGION ; GEOCHEMICAL CONSTRAINTS ; CATHAYSIA BLOCKS ; SYENITE-GABBRO
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000303308300018
资助机构	National Natural Science Foundation of China(40728002) ; National Natural Science Foundation of China(40728002) ; National Science Council (Taiwan) ; National Science Council (Taiwan) ; Australian Research Council(DP DP110104799) ; Australian Research Council(DP DP110104799) ; National Natural Science Foundation of China(40728002) ; National Natural Science Foundation of China(40728002) ; National Science Council (Taiwan) ; National Science Council (Taiwan) ; Australian Research Council(DP DP110104799) ; Australian Research Council(DP DP110104799) ; National Natural Science Foundation of China(40728002) ; National Natural Science Foundation of China(40728002) ; National Science Council (Taiwan) ; National Science Council (Taiwan) ; Australian Research Council(DP DP110104799) ; Australian Research Council(DP DP110104799) ; National Natural Science Foundation of China(40728002) ; National Natural Science Foundation of China(40728002) ; National Science Council (Taiwan) ; National Science Council (Taiwan) ; Australian Research Council(DP DP110104799) ; Australian Research Council(DP DP110104799)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/84780]
专题	中国科学院地质与地球物理研究所
通讯作者	Li, Zheng-Xiang
作者单位	1.Curtin Univ Technol, ARC Ctr Excellence Core Crust Fluid Syst CCFS, Perth, WA 6845, Australia 2.Curtin Univ Technol, Dept Appl Geol, Inst Geosci Res TIGeR, Perth, WA 6845, Australia 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100027, Peoples R China 4.Natl Taiwan Univ, Dept Geosci, Taipei 106, Taiwan 5.Nanjing Univ, Dept Earth Sci, State Key Lab Mineral Deposits Res, Nanjing 210093, Jiangsu, Peoples R China 6.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Li, Zheng-Xiang,Li, Xian-Hua,Chung, Sun-Lin,et al. Magmatic switch-on and switch-off along the South China continental margin since the Permian: Transition from an Andean-type to a Western Pacific-type plate boundary[J]. TECTONOPHYSICS,2012,532:271-290.
APA	Li, Zheng-Xiang,Li, Xian-Hua,Chung, Sun-Lin,Lo, Ching-Hua,Xu, Xisheng,&Li, Wu-Xian.(2012).Magmatic switch-on and switch-off along the South China continental margin since the Permian: Transition from an Andean-type to a Western Pacific-type plate boundary.TECTONOPHYSICS,532,271-290.
MLA	Li, Zheng-Xiang,et al."Magmatic switch-on and switch-off along the South China continental margin since the Permian: Transition from an Andean-type to a Western Pacific-type plate boundary".TECTONOPHYSICS 532(2012):271-290.