Age and genesis of the Jinshan gold deposit in the Chinese North Tianshan: A link to large-scale strike-slip shearing events
文献类型：期刊论文
| 作者 | Muhtar, M. N.2,3; Wu, Chang-Zhi4; Brzozowski, Matthew J.5; Zhang, Wan-Feng1; Chen, Bo-Yang3; Lei, Ru-Xiong4; Xiao, Wen-Jiao2 |
| 刊名 | ORE GEOLOGY REVIEWS
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 142页码:15 |
| 关键词 | Gold deposit Ni-Cu sulfide deposit Strike-slip shear zone S-Pb isotopes Chinese North Tianshan |
| ISSN号 | 0169-1368 |
| DOI | 10.1016/j.oregeorev.2022.104734 |
| 英文摘要 | Large-scale transcrustal strike-slip shearing, orogenic gold deposits, and magmatic Ni-Cu sulfide deposits are prominent features in the Chinese North Tianshan in the northeastern segment of the Tianshan Orogenic Belt. The relationship between the shearing events and the different styles of mineralization, however, remains ambiguous. Here, structural data, zircon U-Pb-Hf isotopes, bulk-rock geochemistry, muscovite Ar-40/Ar-39 age dating, and S-Pb isotopes of pyrite from the Jinshan gold deposit are utilized in conjunction with the Pb isotope composition of mineralized mafic-ultramafic rocks of the Huangshandong Ni-Cu sulfide deposit to characterize the link between strike-slip shearing events, and orogenic Au and magmatic Ni-Cu sulfide mineralization. The new zircon U-Pb age results indicate that the host diorite of the gold orebodies formed at ca. 335 Ma. These diorites are enriched in light rare earth elements and large ion lithophile elements (e.g., Ba, U, K, and Pb), but depleted in high field strength elements (e.g., Nb, Ta, and Ti), and have low MgO (4.45-5.17 wt%) contents, Mg# (0.32-0.36), and (La/Yb) CN ratios (4.81-6.90). Based on the lack of ancient crustal basement rocks in the Qoltag Arc, the depleted Nd-Hf isotope composition (epsilon Hf( t) = 10.82-15.38; epsilon Nd( t) = 6.17-6.67), the juvenile Hf depleted-mantle model ages (350-530 Ma), and the enrichment in Na2O (4.45-5.17 wt%) relative to K2O (1.05-2.20 wt%) of the diorite, it is inferred that the primary magma from which the diorite crystallized was derived from partial melting of metasomatized mantle wedge in an oceanic arc environment. Two muscovite samples separated from an auriferous quartz lode yield Ar-40/Ar-39 plateau ages of 248.6 +/- 0.8 Ma and 249.6 +/- 0.9 Ma, representing the age of the gold mineralization event. The similarity in S-Pb isotope composition of pyrite in the Jinshan gold deposit and pyroxenite in the Huangshandong Ni-Cu sulfide deposit suggests that the auriferous fluids required for the formation of the Jinshan gold deposit could represent a mixture of deuteric fluids with limited upper crustal metamorphic fluids from the Kanggur-Huangshan Shear Zone. |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000766745800001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/72572]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Wu, Chang-Zhi |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Xinjiang Res Ctr Mineral Resources, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China 3.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210046, Peoples R China 4.Changan Univ, Sch Earth Sci & Resources, Key Lab Western Chinas Mineral Resources & Geol E, Minist Educ, Xian 710054, Peoples R China 5.Lakehead Univ, Dept Geol, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada |
| 推荐引用方式 GB/T 7714 | Muhtar, M. N.,Wu, Chang-Zhi,Brzozowski, Matthew J.,et al. Age and genesis of the Jinshan gold deposit in the Chinese North Tianshan: A link to large-scale strike-slip shearing events[J]. ORE GEOLOGY REVIEWS,2022,142:15. |
| APA | Muhtar, M. N..,Wu, Chang-Zhi.,Brzozowski, Matthew J..,Zhang, Wan-Feng.,Chen, Bo-Yang.,...&Xiao, Wen-Jiao.(2022).Age and genesis of the Jinshan gold deposit in the Chinese North Tianshan: A link to large-scale strike-slip shearing events.ORE GEOLOGY REVIEWS,142,15. |
| MLA | Muhtar, M. N.,et al."Age and genesis of the Jinshan gold deposit in the Chinese North Tianshan: A link to large-scale strike-slip shearing events".ORE GEOLOGY REVIEWS 142(2022):15. |
入库方式： OAI收割
来源：广州地球化学研究所
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