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矿床地质  2003 

蒙甘新相邻(北山)地区金铜矿床时空分布特征及成矿作用

Keywords: 地质学,金矿床,铜矿床,海西期岩浆活动,成矿作用,蒙甘新相邻(北山)地区

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Abstract:

文章首次对蒙甘新相邻(北山)地区各类金、铜和铜-镍矿床(点)地质特征、成因类型和空间分布特点进行了系统总结,论证了金、铜和铜_镍成矿作用与古生代岩浆活动的关系,对区域地壳演化过程中金、铜和铜-镍成矿的动力学机制进行了深入讨论。研究结果表明,该区的金矿床(点)大体可划分为变质岩型、火山岩型、斑岩型和深成侵入岩型;铜矿床(点)有斑岩型、夕卡岩型和铜_镍硫化物型。金和铜矿床(点)大都沿古板块汇聚带分布,与海西期火成岩具密切的时空分布关系,它们是古板块对接碰撞期和碰撞期后大规模构造_岩浆活动的产物。

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