| 天山巴音布鲁克地区金锑矿床成矿作用同位素年代学研究 |
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| 关键词:gold-antimony deposit chronology of mineralization Dashankou Bayinbuluke Tianshan Mountains |
| 基金项目:国家重点基础研究发展规划项目(编号:2001CB409810和G1999043201)，国家科技攻关计划“新疆优势矿产资源勘查综合研究”(编号2001BA609A0718) |
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| Isotopic Chronology of Gold-Antimony Deposits in Bayinbuluke Area of the Tianshan Mountains |
| Several gold-antimony deposits,such as the Dashankou gold deposit and the Chahansala antimony deposit,have recently been discovered in Bayinbuluke area of the Tianshan Mountains. Isotopic chronological studies of mineralization show that the fluid inclusion Rb-Sr isochron age of gold-bearing pyrite-quartz veins and pyrite-limonite-quartz veins from the Dashankou gold deposit are 354±8.1 Ma(2σ) and 344±21 Ma(2σ),respectively. The two ages are consistent within the test errors,indicating that the gold deposit was formed in early Carboniferous and was related to regional shearing. The fluid inclusion Rb-Sr isochron age of quartz-stibnite veins and quartz-tetrahedrite-bismuthinite-stibnite veins from the Chahansala antimony deposit is 257±23 Ma(2σ),implying that the deposit was formed during late Hercynian-early Indosinian and had connection with intracontinental deformation. |
| CHEN Fu-wen,LI Hua-qin.2004.Isotopic Chronology of Gold-Antimony Deposits in Bayinbuluke Area of the Tianshan Mountains[J].Acta Geoscientica Sinica,25(2):185-190. |
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