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From arc accretion to continental collision in the eastern Jiangnan Orogen: Evidence from two phases of S-type granites

文献类型：期刊论文

作者Wang, Xin-Shui1,2,3; Gao, Jun1,2,4; Klemd, Reiner3; Jiang, Tuo5; Zhai, Qing-Guo6; Li, Ji-Lei1,2; Liang, Xin-Quan7
刊名PRECAMBRIAN RESEARCH
出版日期2019-02-01
卷号321页码:199-211
关键词South China Jiangnan Orogen S-type granite Strongly peraluminous NE Jiangxi ophiolite
ISSN号0301-9268
DOI10.1016/j.precamres.2018.12.010
英文摘要The NE Jiangxi ophiolitic m lange separates the Huaiyu and Jiuling terranes in the eastern Jiangnan Orogen of the South China Block. Two phases of S-type granites, which are geochemically and mineralogically similar to the Himalayan leucogranites, are newly recognized in mantle peridotites of the NE Jiangxi ophiolite. The first phase, a tourmaline-bearing granite porphyry, has a SIMS zircon U-Pb age of 904.4 +/- 4.8 Ma and is strongly enriched in K2O (4.00-4.26 wt%) and strongly peraluminous (A/CNK = 2.94-3.24). It further shows high Rb/Sr ratios and highly fractionated REE patterns, indicating an origin due to fluid-absent melting of metapelites at relatively high temperatures. The granite porphyry exhibits highly evolved zircon Hf ( -6.0 to -1.0) and whole rock Nd ( -4.2 to -5.1) isotopes, which is in contrast to juvenile-derived magmatic rocks in the Huaiyu Terrane. We thus propose that the granite porphyry was formed by melting of the metapelites sourced from the Yangtze Block subsequent to the accretion of the Huaiyu arc to the Jiuling Terrane (the continental margin of the Yangtze Block). The second phase, a muscovite-bearing quartz porphyry, is strongly peraluminous (A/CNK = 1.29-1.34) with low CaO/Na2O ratios (0.11-0.14) and low FeOt + MgO + TiO2 contents (2.39-2.75 wt%), similar to melts derived from fluid-fluxed melting of metapelites. Zircon grains from the quartz porphyry yielded U-Pb ages of ca. 803-801 Ma with mainly positive epsilon(tif)(t) values ( + 1.9 to + 8.7), which are younger than the depositional ages of the basement sequences and nearly identical to the accumulation of the overlying unmetamorphosed cover in the Jiangnan Orogen. Therefore, it is suggested that the quartz porphyry was formed in a post-collisional extensional setting subsequent to the final assembly of the Yangtze and Cathaysia blocks. In conjunction with published data, we conclude that multiple subduction-accretion events may have been involved in the formation of the South China Block during Neoproterozoic times.
WOS关键词SHRIMP U-PB ; NEOPROTEROZOIC TECTONIC EVOLUTION ; SOUTH CHINA CONSTRAINTS ; SOUTHEASTERN YANGTZE BLOCK ; HF ISOTOPIC COMPOSITIONS ; GEOCHEMICAL EVIDENCE ; LU-HF ; CATHAYSIA BLOCK ; PERALUMINOUS GRANITOIDS ; VOLCANIC-ROCKS
资助项目National Natural Science Foundation of China[41172200] ; China Geological Survey[DD20160345] ; CSC-DAAD Postdoc Scholarship Program (CSC)[201709920072]
WOS研究方向Geology
语种英语
WOS记录号WOS:000457657500012
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; CSC-DAAD Postdoc Scholarship Program (CSC) ; CSC-DAAD Postdoc Scholarship Program (CSC) ; CSC-DAAD Postdoc Scholarship Program (CSC) ; CSC-DAAD Postdoc Scholarship Program (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; CSC-DAAD Postdoc Scholarship Program (CSC) ; CSC-DAAD Postdoc Scholarship Program (CSC) ; CSC-DAAD Postdoc Scholarship Program (CSC) ; CSC-DAAD Postdoc Scholarship Program (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; CSC-DAAD Postdoc Scholarship Program (CSC) ; CSC-DAAD Postdoc Scholarship Program (CSC) ; CSC-DAAD Postdoc Scholarship Program (CSC) ; CSC-DAAD Postdoc Scholarship Program (CSC) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; CSC-DAAD Postdoc Scholarship Program (CSC) ; CSC-DAAD Postdoc Scholarship Program (CSC) ; CSC-DAAD Postdoc Scholarship Program (CSC) ; CSC-DAAD Postdoc Scholarship Program (CSC)
源URL[http://ir.iggcas.ac.cn/handle/132A11/90513]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Wang, Xin-Shui; Gao, Jun
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Univ Erlangen Nurnberg, GeoZentrum Nordbayern, D-91054 Erlangen, Germany
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.China Geol Survey, Wuhan Ctr, Lab Isotope Geochem, Wuhan 430205, Hubei, Peoples R China
6.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
7.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Xin-Shui,Gao, Jun,Klemd, Reiner,et al. From arc accretion to continental collision in the eastern Jiangnan Orogen: Evidence from two phases of S-type granites[J]. PRECAMBRIAN RESEARCH,2019,321:199-211.
APA Wang, Xin-Shui.,Gao, Jun.,Klemd, Reiner.,Jiang, Tuo.,Zhai, Qing-Guo.,...&Liang, Xin-Quan.(2019).From arc accretion to continental collision in the eastern Jiangnan Orogen: Evidence from two phases of S-type granites.PRECAMBRIAN RESEARCH,321,199-211.
MLA Wang, Xin-Shui,et al."From arc accretion to continental collision in the eastern Jiangnan Orogen: Evidence from two phases of S-type granites".PRECAMBRIAN RESEARCH 321(2019):199-211.

入库方式： OAI收割

来源：地质与地球物理研究所

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