Geochronology, geochemistry, and Sr-Nd-Hf-O isotopes of the Zhongqiuyang rhyolitic tuff in eastern Guangdong, SE China: Constraints on petrogenesis and tectonic setting
文献类型：期刊论文
| 作者 | Jia, Lihui1; Mao, Jingwen2; Zheng, Wei2 |
| 刊名 | GEOLOGICAL JOURNAL
 |
| 出版日期 | 2019-12-21 |
| 页码 | 19 |
| ISSN号 | 0072-1050 |
| 关键词 | A-type granite eastern Guangdong petrogenesis tectonic setting Zhongqiuyang Cu deposit |
| DOI | 10.1002/gj.3702 |
| 英文摘要 | A-type magmas generally occur in extension-related environments and shed new light on the tectonic setting by metallogenic and petrological studies of A-type felsic volcanic rocks. The Zhongqiuyang porphyry Cu deposit is located in eastern Guangdong, SE China. Here, we present zircon U-Pb geochronology of rhyolitic tuffs, which yields a weighted mean Pb-206/U-238 age of 164.7 +/- 1.3 Ma, consistent with the age of the Jurassic porphyry Cu mineralization in the southeastern coastal metallogenic belt. The Zhongqiuyang rhyolitic tuffs are characterized by high FeOT/MgO ratios and low MgO, CaO, and TiO2 contents and enrichments in Rb, Th, and U and depletions in Ba, Nb, Ta, Sr, P, and Ti, showing an A(2)-subtype affinity. The Sr-Nd-Hf-O isotopic compositions imply that the rhyolitic tuffs were generated by partial melting of the crustal melts (90% of the Palaeoproterozoic metaigneous rocks and 10% of the Palaeoproterozoic metasedimentary rocks) in the Cathaysia Block, with input of 1020% mantle-derived materials. Element variations indicate that crystal fractionation was also required for the generation of the studied samples after partial melting. In combination with previous studies, we propose that a window or a break-off of the subducted slab triggered by upwelling asthenosphere during the Middle to Late Jurassic underneath the Cathaysia Block, and the ascending mafic magmas not only supplied heat for crustal remelting but also added mantle-derived melts, resulting in the formation of I- or A-type felsic intrusions related to Cu-Au/Cu-Mo deposits along the active continental margin of SE China. |
| WOS关键词 | A-TYPE GRANITES ; SN POLYMETALLIC MINERALIZATION ; CRUST-MANTLE INTERACTION ; IN-SITU ANALYSIS ; GAN-HANG BELT ; U-PB ZIRCON ; SOUTH CHINA ; SOUTHEASTERN CHINA ; NANLING RANGE ; VOLCANIC-ROCKS |
| 资助项目 | CGS Research Fund[JYYWF20180601] ; National Key RD Plan[2017YFC0601403] ; National Nature Science Foundation of China[41430314] ; Project of Guangzhou Jiaye Investment Corporation[H02582] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000503651600001 |
| 资助机构 | CGS Research Fund ; CGS Research Fund ; CGS Research Fund ; CGS Research Fund ; National Key RD Plan ; National Key RD Plan ; National Key RD Plan ; National Key RD Plan ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Project of Guangzhou Jiaye Investment Corporation ; Project of Guangzhou Jiaye Investment Corporation ; Project of Guangzhou Jiaye Investment Corporation ; Project of Guangzhou Jiaye Investment Corporation ; CGS Research Fund ; CGS Research Fund ; CGS Research Fund ; CGS Research Fund ; National Key RD Plan ; National Key RD Plan ; National Key RD Plan ; National Key RD Plan ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Project of Guangzhou Jiaye Investment Corporation ; Project of Guangzhou Jiaye Investment Corporation ; Project of Guangzhou Jiaye Investment Corporation ; Project of Guangzhou Jiaye Investment Corporation ; CGS Research Fund ; CGS Research Fund ; CGS Research Fund ; CGS Research Fund ; National Key RD Plan ; National Key RD Plan ; National Key RD Plan ; National Key RD Plan ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Project of Guangzhou Jiaye Investment Corporation ; Project of Guangzhou Jiaye Investment Corporation ; Project of Guangzhou Jiaye Investment Corporation ; Project of Guangzhou Jiaye Investment Corporation ; CGS Research Fund ; CGS Research Fund ; CGS Research Fund ; CGS Research Fund ; National Key RD Plan ; National Key RD Plan ; National Key RD Plan ; National Key RD Plan ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Project of Guangzhou Jiaye Investment Corporation ; Project of Guangzhou Jiaye Investment Corporation ; Project of Guangzhou Jiaye Investment Corporation ; Project of Guangzhou Jiaye Investment Corporation |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95872]  |
| 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 | Mao, Jingwen |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 2.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Lihui,Mao, Jingwen,Zheng, Wei. Geochronology, geochemistry, and Sr-Nd-Hf-O isotopes of the Zhongqiuyang rhyolitic tuff in eastern Guangdong, SE China: Constraints on petrogenesis and tectonic setting[J]. GEOLOGICAL JOURNAL,2019:19. |
| APA | Jia, Lihui,Mao, Jingwen,&Zheng, Wei.(2019).Geochronology, geochemistry, and Sr-Nd-Hf-O isotopes of the Zhongqiuyang rhyolitic tuff in eastern Guangdong, SE China: Constraints on petrogenesis and tectonic setting.GEOLOGICAL JOURNAL,19. |
| MLA | Jia, Lihui,et al."Geochronology, geochemistry, and Sr-Nd-Hf-O isotopes of the Zhongqiuyang rhyolitic tuff in eastern Guangdong, SE China: Constraints on petrogenesis and tectonic setting".GEOLOGICAL JOURNAL (2019):19. |
入库方式： OAI收割
来源：地质与地球物理研究所
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