| 陕西省大茅坪铜矿床火山岩与成矿关系研究 |
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| 引用本文： | 李随民,周宗桂,姚书振. 陕西省大茅坪铜矿床火山岩与成矿关系研究[J]. 地质科技情报, 2002, 21(3): 69-73 |
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| 作者姓名： | 李随民 周宗桂 姚书振 |
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| 作者单位： | 中国地质大学资源学院,湖北,武汉,430074 |
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| 基金项目： | 国土资源部“九五”科技攻关项目 (95 -0 2 -0 0 2 ) |
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| 摘 要： | 陕西省大茅坪铜矿床产于碧口群火山岩地层中，矿床的成因与成矿物质的来源均与火山岩相关。通过矿石和围岩微量元素，稀土元素、Sr和Pb同位素的示踪，认为矿床是喷流沉积的产物，成矿年龄与碧口群火山岩形成年龄相近，在1200Ma左右。矿石铅同位素特征显示大茅坪铜矿床有后期热液改靠成矿作用的参与这与地质认识相吻合，从而得出矿床成矿物主要来源于赋矿火山岩，在喷流沉积成矿的基础上，有后期变质流体的叠加改造，早先形成的矿质在一定范围内发生迁移和局部富集作用。
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| 关 键 词： | 火山岩 构造环境 碧口群 铜矿床 成矿元素 陕西 |
| 文章编号： | 1000-7849(2002)03-0069-05 |
| 修稿时间： | 2001-11-01 |
RELATION OF VOLCANIC ROCKS AND COPPER DEPOSIT |
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| LI Sui min,ZHOU Zong gui,YAO Shu zhen. RELATION OF VOLCANIC ROCKS AND COPPER DEPOSIT[J]. Geological Science and Technology Information, 2002, 21(3): 69-73 |
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| Authors: | LI Sui min ZHOU Zong gui YAO Shu zhen |
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| Abstract: | Damaoping copper deposit lies in volcanic rocks of Bikou Group,with which ore forming elements are closely related. This paper has analyzed the relation between ore and volcanic rocks using geochemical data, such as rare earth elements, trace elements, and Sr,Pb isotopes.The geochemical composition of ore and volcanic rocks reveals that the ore forming elements mainly originate from the basic volcanic in Bikou Group,but some of them come from metamorphic fluid on the basis of volcanic exhalation mineralization. |
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| Keywords: | volcanic rock tectonic environment Bikou Group copper deposit ore forming element |
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