| 新疆昆仑式火山岩型块状硫化物铜矿床及成矿地质环境 |
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| 引用本文：.2004.Kunlun Type Volcanic_hosted Massive Copper Sulfide Deposits in Xinjiang and Th eir Ore_forming Tectonic Environments [J].Mineral Deposits,23(1):82~92 |
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| 基金项目:国家自然科学基金资助项目(编号：40273023) |
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| 中文摘要:新疆西昆仑奥依塔克_恰尔隆拗陷带内阿克塔什_萨落依成矿带发现多 处火山岩型块状硫化物铜矿床。这些矿床产在石炭系双峰式火山岩系之内，沿着下石炭统基 性火山岩和上石炭统酸性火山岩两个层位产出，分别以玄武岩和流纹岩为容矿主岩，可以明 显地分成基性火山岩型和酸性火山岩型两种类型。矿石主成矿元素均以铜为主，含少量的锌 ，几乎不含铅，矿床类型属于铜型。这些基性火山岩型和酸性火山岩型矿床被统称为昆仑式 火山岩型块状硫化物铜矿床。根据矿床产出地质环境、双峰式火山岩系、沉积建造以及火山 岩地球化学特征，推断昆仑式火山岩型块状硫化物铜矿床最可能形成于泥盆纪_石炭纪弧后 拉张构造环境。 |
| 中文关键词:地质学 昆仑式 火山岩型 块状硫化物铜矿床 成矿环境 |
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| Kunlun Type Volcanic_hosted Massive Copper Sulfide Deposits in Xinjiang and Th eir Ore_forming Tectonic Environments |
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| Abstract:Lots of volcanic_hosted massive sulfide deposits were found along the Aketashi_S aluoyi metallogenic belt in the Aoyitake_Qiaerlong rifted depression within the West Kunlun Mountains of Xinjiang. These deposits, which can be obviously divide d into basic and acid volcanic types, are present in the Carboniferous bi_model volcanic series and occur along two horizons, i.e., the Lower Carboniferous mafi c volcanic rock and the Upper Carboniferous felsic volcanic rock. The ores are a ll dominated by Cu with minor Zn, and the deposits are classified as the Cu type . All the mafic and felsic volcanic_hosted massive sulfide deposits are therefor e defined as the Kunlun type volcanic_hosted massive copper sulfide deposit. Bas ed on geological environment, bi_model volcanic series, sedimentary formation an d geochemical features of volcanic rocks, it is held that the deposits were most probably formed in the Carboniferous back arc rifted environment. |
| keywords:geology, Kunlun type, volcanic type, massive sulfide deposits, ore-forming environment |
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