| 西藏尤卡朗铅银矿床流体包裹体研究 |
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| 引用本文： | 王涛,赖健清,冯志兴,宋学军.西藏尤卡朗铅银矿床流体包裹体研究[J].地质科学,2011,46(2):549-558. |
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| 作者姓名： | 王涛 赖健清 冯志兴 宋学军 |
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| 作者单位： | （1.中南大学地学与环境工程学院长沙 410083；2.有色金属成矿预测教育部重点实验室长沙410083；
3.青海西部矿业地质勘查有限责任公司 西宁 810016） |
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| 摘 要： | 西藏尤卡朗铅银矿床位于班公湖-怒江结合带以南、雅鲁藏布江结合带以北的冈底斯-念青唐古拉山中生代岩浆弧.矿区的含矿地层为上侏罗统拉贡塘组顶部的石英岩层,矿体受到裂隙构造控制.含矿脉体的石英中发现两类流体包裹体,即Ⅰ型水溶液包裹体和Ⅱ型H2O-CO2包裹体,均-温度为160℃～250℃,推测成矿温度为中温.流体盐度范围为1...
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| 关 键 词： | 流体包裹体 均一温度 盐度 尤卡朗铅银矿床 西藏 |
| 收稿时间： | 2010-05-28 |
Fluid inclusions of Youqialang lead-silver deposit in Tibet |
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| Wang Tao,Lai Jianqing,Feng Zhixing,Song Xuejun.Fluid inclusions of Youqialang lead-silver deposit in Tibet[J].Chinese Journal of Geology,2011,46(2):549-558. |
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| Authors: | Wang Tao Lai Jianqing Feng Zhixing Song Xuejun |
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| Institution: | (1.School of Geoscience and Environmental Engineering|Central South University|Changsha 410083；2.Key Laboratory of Metallogenic Prediction of Nonferrous Metals|Ministry of Education|Changsha 410083； 3.Qinghai Western Mining Geological Survey Co Ltd,Xining 810016) |
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| Abstract: | The Youqialang lead silver deposit in Tibet is located in Gandise Nyainqentanglha range Mesozoic magmatic arc，in the south of Bangonghu Nujiang junction belt and north of Yaluzangbu River junction belt.Its ore bearing strata are quartzite on the top of Lagongtang Formation of Upper Jurassic.The orebodies are controlled by structural fractures.Quartz in ore bearing veins contains two types of fluid inclusions，they are aqueous inclusions(Type Ⅰ) and H2O-CO2 inclusions (Type Ⅱ).According to the range of their homogenization temperatures(160 ℃～250 ℃)，we inferred that the ore forming temperature of the deposit was mesotherm.The salinity ranges from 165％～1229％，and its peak value ranges from 3％～5％.Part of the data with higher salinity reflects that the source of high salinity magmatic hydrothermal fluids is mixed by heated groundwater in the later period.The composition of the hydrotherm changed due to the inburst of thermal groundwater，which is an important factor of mineralization.Ore forming fluids also contain CO2，which promoted the deposition of lead and zinc sulfide. |
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| Keywords: | Fluid inclusions Homogenization temperature Salinity Youqialang lead silver deposit Tibet |
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