| 北祁连尕大坂铜铅锌矿床特征及形成环境 |
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| 引用本文： | 郭彦汝,王瑾,王潇洒,李华坦,张依娜,乔保星,孔德岩.北祁连尕大坂铜铅锌矿床特征及形成环境[J].青海大学学报,2014(3):51-57. |
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| 作者姓名： | 郭彦汝 王瑾 王潇洒 李华坦 张依娜 乔保星 孔德岩 |
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| 作者单位： | [1]青海大学,青海西宁810016 [2]青海省第四地质矿产勘查院,青海西宁810029 |
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| 基金项目： | 青海省祁连县走廊南山南坡一带铜多金属矿调查评价（1212011221049） |
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| 摘 要： | 本文对北祁连尕大坂铜铅锌矿田地质特征、矿体、矿石、围岩蚀变特征以及地球化学特征进行了简要论述,该矿体均产于酸性火山岩与基性火山岩的接触部位,且靠近酸性火山岩的一侧,具有"双岩石组合"特征。通过对早中寒武世黑刺沟组火山岩的岩石化学性质的分析,探讨了矿床形成环境,认为该矿床是由海底火山喷发形成的黑矿型块状硫化物矿床,是岛弧环境下的产物。
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| 关 键 词： | 岛弧 火山岩 黑矿型 块状硫化物 |
Characteristics and formation setting analysis of Gadaban copper- lead- zinc deposit in northern Qilian |
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| GUO Yanru,WANG Jin,WANG Xiaosa,LI Huatan,ZHANG Yina,QIAO Baoxing,KONG Deyan.Characteristics and formation setting analysis of Gadaban copper- lead- zinc deposit in northern Qilian[J].Journal of Qinghai University(Natural Science),2014(3):51-57. |
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| Authors: | GUO Yanru WANG Jin WANG Xiaosa LI Huatan ZHANG Yina QIAO Baoxing KONG Deyan |
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| Institution: | 1. Qinghai University, Xining 810016 ,China; 2. The Fourth of Geology and Mineral Exploration of Qinghai Province, Xining 810029, China) |
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| Abstract: | The geological characteristics of ore field,ore body feature,ore and wall rock alteration characteristics,geochemical characteristics are analyzed in Gadaban copper-lead-zinc deposit of northern Qilian. Ore bodies are produced in the contact area of acidic volcanic rocks and mafic volcanic rocks,and close to the side of acidic volcanic rocks with double rock assemblage. Through analyzing geochemical features of volcanic rocks in the Heicigou group of early-middle Cambrian and forming setting,it is concluded that ore deposits are the ＂Kuroko-type＂massive sulfide deposit formed by submarine volcanic eruption and derived from island-arc environment. |
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| Keywords: | island-arc volcanic rocks Kuroko-type massive sulfide deposit |
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