中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A comprehensive overview on the origin of intrusive rocks and polymetallic mineralization in the Tongling ore-cluster region, lower Yangtze River Metallogenic Belt: Geological and geochemical constraints

文献类型:期刊论文

作者Wang, Yu4; Yang, Xiaoyong3,4; Deng, Jianghong1; Liu, Shasha2,4; Sun, Chao4; Hou, Qi4; Wang, Luojian4
刊名ORE GEOLOGY REVIEWS
出版日期2022-02-01
卷号141页码:23
关键词Magmatism Petrogenesis Cu-Au deposit Metallogenesis Tongling ore-cluster region Lower Yangtze River metallogenic belt
ISSN号0169-1368
DOI10.1016/j.oregeorev.2021.104625
通讯作者Yang, Xiaoyong(xyyang@ustc.edu.cn) ; Deng, Jianghong(jhdeng0507@163.com)
英文摘要The Tongling ore-cluster region is one of the most important Cu-Au polymetallic producers in the famous Lower Yangtze River Metallogenic Belt (LYRMB) in eastern China. The Cu-Au polymetallic ore deposits can be divided into four types, i.e., skarn, strata-bound hydrothermal, porphyry, and cryptobreccia, closely related to the Late Jurassic to Early Cretaceous magmatism. We summarize the geology of the Mesozoic Cu-Au deposits in Tongling, eastern China, and revisit the age distributions and geochemical characteristics of associated Mesozoic intrusions, by integrating a large number of published geochemical data (including major and trace elements for both early-stage and late-stage intrusions, whole-rock Sr-Nd-Pb isotopes, and zircon U-Pb age and Hf isotopes for early-stage intrusions), to reveal their sources and genesis. According to the U-Pb ages of intrusions, the main magmatic events in the area can be divided into two stages, i.e., 152-135 Ma and 135-124 Ma, respectively. The early-stage magmatism mainly produced Cu-Au mineralization-related dioritic intrusions, including pyroxene diorite-pyroxene monzodiorite, quartz diorite-quartz monzodiorite, and granodiorite, showing unobvious geochronological order. Geochemical data of Late Jurassic-Early Cretaceous intrusions from the early-stage magmatism suggest that they are all derived from a similar source composed of different proportions of slab-derived melt, metasomatized lithospheric mantle, and a lesser content of lower crust materials. Among them, the key differences lie in that more lower crust materials are incorporated in the source of intermediate-felsic rocks compared to intermediate-basic rocks. The late-stage magmatism produced a wide variety of rocks (diorite porphyry, syenite porphyry, granite porphyry, monzonite, and granite porphyry), which are related to Pb-Zn deposits. The late-stage igneous rocks may evolve from the early-stage rocks and have experienced fractional crystallization of apatite, ilmenite, and other minerals. Both early and late-stage magmatic events in the Tongling region were formed in the subduction setting, and corresponding to compression and extensional setting, respectively. Besides, the H-O isotopes of different kinds of minerals suggest that the ore-forming fluids of most ore deposits were mainly derived from the magma and mixed with a small amount of meteoric water in the late-stage mineralization. The S isotopes of sulfides show that the ore-forming materials come from the magma, accompanied by the addition of original sediments.
资助项目National Natural Science Foundation of China[42030801] ; National Natural Science Foundation of China[42011540384] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-3]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000766758500001
出版者ELSEVIER
源URL[http://ir.qdio.ac.cn/handle/337002/178146]  
专题海洋研究所_深海极端环境与生命过程研究中心
通讯作者Yang, Xiaoyong; Deng, Jianghong
作者单位1.Chinese Acad Sci, Ctr Ocean Mega Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China
2.Bur Geol & Mineral Explorat Anhui Prov, Geol Team 321, Tongling 244033, Peoples R China
3.CAS Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China
4.Univ Sci & Technol China, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China
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Wang, Yu,Yang, Xiaoyong,Deng, Jianghong,et al. A comprehensive overview on the origin of intrusive rocks and polymetallic mineralization in the Tongling ore-cluster region, lower Yangtze River Metallogenic Belt: Geological and geochemical constraints[J]. ORE GEOLOGY REVIEWS,2022,141:23.
APA Wang, Yu.,Yang, Xiaoyong.,Deng, Jianghong.,Liu, Shasha.,Sun, Chao.,...&Wang, Luojian.(2022).A comprehensive overview on the origin of intrusive rocks and polymetallic mineralization in the Tongling ore-cluster region, lower Yangtze River Metallogenic Belt: Geological and geochemical constraints.ORE GEOLOGY REVIEWS,141,23.
MLA Wang, Yu,et al."A comprehensive overview on the origin of intrusive rocks and polymetallic mineralization in the Tongling ore-cluster region, lower Yangtze River Metallogenic Belt: Geological and geochemical constraints".ORE GEOLOGY REVIEWS 141(2022):23.

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来源:海洋研究所

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