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| 东昆仑野马泉地区矽卡岩矿床地球化学特征及其成因意义 | |
| 引用本文： | 刘云华,莫宣学,张雪亭,许国武.东昆仑野马泉地区矽卡岩矿床地球化学特征及其成因意义[J].华南地质与矿产,2006,14(3):31-36. |
| 作者姓名： | 刘云华 莫宣学 张雪亭 许国武 |
| 作者单位： | 1. 宜昌地质矿产研究所,湖北,宜昌,443003 2. 中国地质大学(北京),北京,100083 3. 中国地质大学(北京),北京,100083;青海省地质调查院,西宁,810012 4. 青海省地质调查院,西宁,810012 |
| 基金项目： | 青海省东昆仑野马泉-乌兰珠尔金属矿床成矿规律研究项目 |
| 摘 要： | 东昆仑西段(祁曼塔格)的野马泉地区,是青海省内一个重要的多金属成矿区.该区以往的工作程度较低,与花岗岩有关的铁、铜、多金属矿床多是近几年地质大调查中新发现的.本文通过对野马泉地区铁、铜、多金属矿床矿石矿物组合、围岩蚀变分带、黄铁矿Co/Ni比值、矿石稀土元素特征、矿床硫、铅同位素组成特征等的研究.结果表明,野马泉地区矽卡岩型多金属矿床的形成与东昆仑晚古生代-早中生代构造岩浆旋回造山后期的伸展引张环境形成的碱性A型花岗岩有关,成矿物质主要来自岩浆,具有深部来源特征,与幔源基性岩浆底侵及其与壳源酸性岩浆的混合作用有关,属于典型的钙、镁矽卡岩型矿床. |
| 关 键 词： | 矽卡岩 多金属矿 地球化学 野马泉 东昆仑 |
| 文章编号： | 1007-3701（2006）03-0031-06 |
| 收稿时间： | 2006-03-16 |
| 修稿时间： | 2006年3月16日 |
The Geochemical Characteristics and the Meaning of Skarn-Type Deposits in Yemaquan Area,Eastern Kunlun |
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| LIU Yun-hua,MO Xuan-xue,ZHANG Xue-ting,XU Guo-wu.The Geochemical Characteristics and the Meaning of Skarn-Type Deposits in Yemaquan Area,Eastern Kunlun[J].Geology and Mineral Resources of South China,2006,14(3):31-36. | |
| Authors: | LIU Yun-hua MO Xuan-xue ZHANG Xue-ting XU Guo-wu |
| Abstract: | Yemaquan region in western part of the East Kunlun Range(the Qimantage) is one of the important polymetallogenic districts in Qinghai Province.Many granitoid-related iron,copper and polymetallic deposits and occurrences have newly been discovered during the recent regional geological investigations.This paper studies mineral assemblage,Co/Ni ratios of pyrites,REE and S,Pb isotopic compositions,as well as rock alteration zoning of the iron,copper and polymetallic deposits in Yemaquan region.The results indicate that the skarn-type polymetallogenic deposits in the studied area are related with the alkalic A-type granite,which was formed in lithospheric extensional tectonic setting during the late stage of late Paleozoic-early Mesozoic tectonomagmatic cycle.These deposits of which contains the ore-forming materials with the deep derived characters were mainly from the magma,they are relative to the mixing between underplating mantle-derived basic magma and crust-derived acidic magma,and belong to the typical Ca,Mg skarn-type deposits. |
| Keywords: | Skarn Polymetallogenic Geochemistry East Kunlun Yemaquan |
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