Sr-Nd-Pb and zircon Hf isotopic constraints on the petrogenesis of two types of early Cretaceous intrusive rocks in the Tongling ore-cluster region: Implications for Cu-Au polymetallic mineralization

doi:10.1016/j.oregeorev.2022.105122

	Sr-Nd-Pb and zircon Hf isotopic constraints on the petrogenesis of two types of early Cretaceous intrusive rocks in the Tongling ore-cluster region: Implications for Cu-Au polymetallic mineralization
	Wang, Yu 1; Yang, Xiaoyong 1,2,5; Deng, Jianghong 3,4,6
	2022-11-01
发表期刊	ORE GEOLOGY REVIEWS
ISSN	0169-1368
卷号	150 页码:18
通讯作者	Yang, Xiaoyong(xyyang@ustc.edu.cn) ; Deng, Jianghong(jhdeng0507@163.com)
摘要	Early Cretaceous magmatic activities in the Tongling ore-cluster region of eastern China produced a series of igneous rocks, which can be divided into early-stage ore-bearing intrusions associated with large-scale Cu pol-ymetallic mineralization, and late-stage intrusions that are generally ore-barren. Petrogeneses of these intrusive rocks and their relationship to mineralization are still controversial. To clarify these scientific issues, early-stage ore-bearing intrusive rocks (granodiorite from the Jinziwei deposit and granodiorite porphyry from the Yao-jialing deposit) and late-stage ore-barren granodiorite dykes from the Jinziwei deposit are studied. Zircons from early-stage ore-bearing intrusions and late-stage ore-barren rocks yield U-Pb ages of 141-139 Ma, and 129 Ma, respectively, indicating that the gap between the two-stage magmatic events was approximately 10 Ma. The SiO2 contents of the two types of rocks are similar (62.15-68.11 wt% and 64.02-65.91 wt%, respectively), whereas their Sr/Y values (49.26-140.54 and 17.90-21.24, respectively) and Y contents (7.4-16.2 ppm and 20.2-24.0 ppm, respectively) are significantly different, suggesting that the former is adakite and the latter is non-adakite. Whole-rock Sr-Nd-Pb and zircon Hf isotopic compositions indicate that the early-stage ore-bearing intrusions were derived from partial melting of the subducted slab (oceanic crust with marine sediments), followed by the interaction of lithospheric mantle peridotite and the later incorporation of Middle-Upper Yangtze continental crust materials during magma ascent/emplacement. The late-stage ore-barren dykes evolved from the early-stage intermediate-basic magma in the Tongling region, which was originated from the enriched lithospheric mantle metasomatized by slab fluids/melts followed by the addition of a small amount of crustal materials. The zircon and apatite geochemical results show that high oxygen fugacity of the early-stage intrusion is a key factor in regional Cu-Au mineralization. Our study reveals the fact that magma with F-rich or Cl-rich characteristics directly controls the type of mineralization. Furthermore, the F-rich magma is favorable for Cu-Mo deposits, and on the other hand, the Cl-rich magma is favorable for Cu-Au-Zn deposits.
关键词	Petrogenesis Sr-Nd-Pb-Hf isotopes Zircon Apatite Mineralization Tongling Lower Yangtze River metallogenic belt
DOI	10.1016/j.oregeorev.2022.105122
收录类别	SCI
语种	英语
资助项目	Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-3] ; Natural Science Foundation of China[42030801] ; Natural Science Foundation of China[42011540384] ; Natural Science Foundation of China[41673040] ; Natural Resources Science and Technology Project of Anhui Province[2020-K-13] ; China Postdoctoral Science Foundation[2021M702497]
WOS研究方向	Geology ; Mineralogy ; Mining & Mineral Processing
WOS类目	Geology ; Mineralogy ; Mining & Mineral Processing
WOS记录号	WOS:000869093700003
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/180663
专题	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.Univ Sci & Technol China, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Ganjiang Innovat Acad, Ganzhou 341119, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 4.Lab Marine Mineral Resources, Qingdao Natl Lab Marine Sci & Technol, Qingdao 266237, Peoples R China 5.Univ Sci & Technol China, Hefei 230026, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
通讯作者单位	深海极端环境与生命过程研究中心; 中国科学院海洋研究所
推荐引用方式 GB/T 7714	Wang, Yu,Yang, Xiaoyong,Deng, Jianghong. Sr-Nd-Pb and zircon Hf isotopic constraints on the petrogenesis of two types of early Cretaceous intrusive rocks in the Tongling ore-cluster region: Implications for Cu-Au polymetallic mineralization[J]. ORE GEOLOGY REVIEWS,2022,150:18.
APA	Wang, Yu,Yang, Xiaoyong,&Deng, Jianghong.(2022).Sr-Nd-Pb and zircon Hf isotopic constraints on the petrogenesis of two types of early Cretaceous intrusive rocks in the Tongling ore-cluster region: Implications for Cu-Au polymetallic mineralization.ORE GEOLOGY REVIEWS,150,18.
MLA	Wang, Yu,et al."Sr-Nd-Pb and zircon Hf isotopic constraints on the petrogenesis of two types of early Cretaceous intrusive rocks in the Tongling ore-cluster region: Implications for Cu-Au polymetallic mineralization".ORE GEOLOGY REVIEWS 150(2022):18.

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