现代地质Issue(2)：348-358,11.
青海省兴海县铜峪沟铜矿床成矿物质和流体来源的地球化学探讨
Geochemistry Constraint on Ore-forming Material and Ore-forming Fluids of Tongyugou Copper Deposit in Xinghai County,Qinghai Province
摘要
Abstract
Tongyugou copper deposit is located in the southeast segment of the Elashan polymetallic belt in Qimantage-Elashan ore-forming subzone.Based on the trace element geochemistry and the stable isotopes of Tonyugou copper deposit,this paper studied the source of ore-forming material and ore-forming fluids,identified the genesis of Tongyugou copper deposit.From the test results,the rare earth element distribution patterns are approximately consistent,the REE patterns are enriched in LREE and are depleted in HREE with high fraction-ation and negative Eu anomaly,demonstrating that the ore material comes from multi-source;sulfur isotope compositions δ34S measurement are full-negative,belong to light sulfur type,revealing that the whole S was from the sedimentary sulfur;the demographics of Pb isotopic compositions showing that the lead was mainly from the ore deposition diagenetic stage,and partly from the Indosinian orogeny,which is closely related to Indo-Chinese orogenic movement.Hydrogen,oxygen and silicon isotope studies shown that the metallogenic fluids stemmed from magmatic water and mixed with metamorphism hydrothermal.The overall reflection show that the ore-forming material sources was related to the magmatic-hydrothermal activities.In general,Tongyugou copper deposit is a skarn type copper deposit.关键词
成矿流体/地球化学/矽卡岩矿床/铜峪沟铜矿/青海省兴海县Key words
ore-forming fluid/geochemistry/skarn type deposit/Tongyugou copper deposit/Xinghai Coun-ty,Qinghai Province分类
天文与地球科学引用本文复制引用
曾小华,周宗桂..青海省兴海县铜峪沟铜矿床成矿物质和流体来源的地球化学探讨[J].现代地质,2014,(2):348-358,11.基金项目
青海省地质勘查基金项目（2008026362）。 （）
