| 贵州天桥铅锌矿床地球化学特征及其地质意义 |
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| 引用本文： | 彭红,蔡冰堰,陶平,李明琴.贵州天桥铅锌矿床地球化学特征及其地质意义[J].贵州地质,2014,31(4):256-260272. |
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| 作者姓名： | 彭红 蔡冰堰 陶平 李明琴 |
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| 作者单位： | 1. 贵州大学资源与环境工程学院,贵州 贵阳,550025
2. 贵州大学资源与环境工程学院,贵州 贵阳550025;贵州省地质调查研究院,贵州 贵阳550004 |
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| 基金项目： | 贵州省地矿局2009年度重大科研项目“水城-紫云-南丹晚古生代裂陷作用及其与主要矿产的关系”(黔地矿科[2009]15号)。 |
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| 摘 要： | 通过对天桥铅锌矿床常量元素、稀土元素、同位素及微量元素等地球化学特征的分析,研究了天桥铅锌矿床的成矿物质流体来源及成矿过程。研究结果表明：（1）矿石、围岩等的稀土元素组成特点相似。∑REE相对较低,LREE/HREE比值较大,稀土配分曲线呈富轻稀土的右倾型曲线。Eu负异常明显,Ce具弱负异常特征。（2）矿床成矿物质流体多来源。受陆源影响较大,主要来自上地壳,且可能主要来自赋矿地层及围岩;无大洋地壳和原始地幔来源。（3）成矿作用为热液改造成矿。
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| 关 键 词： | 铅锌矿床 地球化学 成矿作用 |
Geochemical Characteristics and Its Geological Significance of Tianqiao Pb-Zn Deposits,Guizhou Province |
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| PENG Hong,CAI Bing-yan,TAO Ping and LI Ming-qin.Geochemical Characteristics and Its Geological Significance of Tianqiao Pb-Zn Deposits,Guizhou Province[J].Guizhou Geology,2014,31(4):256-260272. |
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| Authors: | PENG Hong CAI Bing-yan TAO Ping and LI Ming-qin |
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| Institution: | The College of Resource and Environment Engineering,Guizhou University,Guiyang 550003, Guizhou,China;The College of Resource and Environment Engineering,Guizhou University,Guiyang 550003, Guizhou,China;The College of Resource and Environment Engineering,Guizhou University,Guiyang 550003, Guizhou,China;Guizhou Academy of Geologic Survey,Guiyang 550004,Guizhou,China;The College of Resource and Environment Engineering,Guizhou University,Guiyang 550003, Guizhou,China |
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| Abstract: | In this paper, it studies the source of metallogenic metals and fluid in Tianqiao Pb-Zn deposits, by the means of analyses on geochemical characteristics obout the constant element, REE element, isotopes and trace elements, and so on. The results show that ： ①they are similar that the composition characteristics of REE in ores and wallrocks, and so on. The total amounts of REE are relatively low, the rates of LREE/HREE are greater, the chondrite-normalized REE patterns have a LREE-rich and right leaning characteristic on the whole. Eu are negative anomaly obviously; Ce has negative abnormalities weakly. ② The metallogenic metals and fluid of deposits have poly-sources. Which are influenced by terrigenous greatly, and some of them may mainly come from the upper crust, and maybe some come from the ore-bearing strata and wallrock mainly; No sources of it come from oceanic crust or primitive mantle of deep source. ③The mineralization is transformation of hydrothermal mineralization. |
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| Keywords: | Pb-Zn deposits Geochemical characteristics Mineralization |
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