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Spatial-temporal relationships of late Mesozoic granitoids in Zhejiang Province, Southeast China: constraints on tectonic evolution

文献类型：期刊论文

作者Wang, Yong-bin1,2; Zeng, Qing-dong1,3; Zhang, Song4; Chen, Pei-wen1,3; Gao, Shuai1,3
刊名INTERNATIONAL GEOLOGY REVIEW
出版日期2018
卷号60期号:11-14页码:1529-1559
关键词Late Mesozoic granitoids tectonic evolution Zhejiang South China Block
ISSN号0020-6814
DOI10.1080/00206814.2017.1369176
英文摘要Late Mesozoic granitoids in South China are generally considered to have been generated under the Palaeo-Pacific tectonic regime, however, the precise subduction mechanism remains controversial. Detailed zircon U-Pb geochronological, major and trace element, and Sr-Nd-Hf isotopic data are used to document the spatiotemporal distribution of the granitoids in Zhejiang Province. Three periods of late Mesozoic magmatism, including stage 1 (170-145Ma), stage 2 (145-125Ma), and stage 3 (125-90Ma), can be distinguished based on systematic zircon U-Pb ages that become progressively younger towards the SE. Stage 1 granitic rocks are predominantly I-type granitoids, but minor S- or A-type rocks also occur. Sr-Nd-Hf isotopic data suggest that these granitoids were generated from hybrid magmas that resulted from mixing between depleted mantle-derived and ancient crust-derived magmas that formed in an active continental margin environment related to the low-angle subduction of the Palaeo-Pacific plate beneath Southeast China mainland. Stage 2 granitic rocks along the Jiangshan-Shaoxing Fault are predominantly I- and A-type granitoids with high initial Sr-87/Sr-86, low epsilon(Nd)(t), epsilon(Hf)(t) values and Mesoproterozoic Nd-Hf model ages. These results suggest that stage 2 granitoids were derived from mixing between enriched mantle-derived mafic magmas and ancient crust-derived magmas in an extensional back-arc setting related to rollback of the Palaeo-Pacific slab. Stage 3 granitic rocks along the Lishui-Yuyao Fault comprise mainly A- and I-type granitoids with high initial Sr-87/Sr-86 ratios, and low epsilon(Nd)(t) and epsilon(Hf)(t) values, again suggesting mixing of enriched mantle-derived mafic magmas with more ancient crustal magmas in an extensional back-arc setting, related in this case to the continued rollback the Palaeo-Pacific plate and the outboard retreat of its subduction zone. [GRAPHICS] .
WOS关键词A-TYPE GRANITES ; ZIRCON U-PB ; I-TYPE GRANITES ; YANGTZE METALLOGENIC BELT ; CRUST-MANTLE INTERACTION ; CRETACEOUS MONZONITIC PLUTONS ; VOLCANIC-INTRUSIVE COMPLEX ; TONGCUN MOLYBDENUM DEPOSIT ; HF ISOTOPIC CONSTRAINTS ; RE-OS GEOCHRONOLOGY
资助项目National Natural Science Foundation of China[41502090] ; Postdoctoral Science Foundation of China[2015M581165] ; CSC[201604910054]
WOS研究方向Geology
语种英语
WOS记录号WOS:000443879500010
出版者TAYLOR & FRANCIS INC
资助机构National Natural Science Foundation of China ; Postdoctoral Science Foundation of China ; CSC ; National Natural Science Foundation of China ; Postdoctoral Science Foundation of China ; CSC ; National Natural Science Foundation of China ; Postdoctoral Science Foundation of China ; CSC ; National Natural Science Foundation of China ; Postdoctoral Science Foundation of China ; CSC
源URL[http://ir.iggcas.ac.cn/handle/132A11/88560]  
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, Yong-bin
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Aarhus Univ, Dept Earth Sci, Aarhus C, Denmark
3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
4.Beijing Res Inst Uranium Geol, Div Geol & Mineral Resources, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Yong-bin,Zeng, Qing-dong,Zhang, Song,et al. Spatial-temporal relationships of late Mesozoic granitoids in Zhejiang Province, Southeast China: constraints on tectonic evolution[J]. INTERNATIONAL GEOLOGY REVIEW,2018,60(11-14):1529-1559.
APA Wang, Yong-bin,Zeng, Qing-dong,Zhang, Song,Chen, Pei-wen,&Gao, Shuai.(2018).Spatial-temporal relationships of late Mesozoic granitoids in Zhejiang Province, Southeast China: constraints on tectonic evolution.INTERNATIONAL GEOLOGY REVIEW,60(11-14),1529-1559.
MLA Wang, Yong-bin,et al."Spatial-temporal relationships of late Mesozoic granitoids in Zhejiang Province, Southeast China: constraints on tectonic evolution".INTERNATIONAL GEOLOGY REVIEW 60.11-14(2018):1529-1559.

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来源：地质与地球物理研究所

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