沂沭裂谷系火山岩型金矿地球化学特征及矿床成因  

GEOCHEMICAL CHARACTERISTIC AND GENESIS OF VOLCANIC-TYPE GOLD DEPOSIT IN YISHU RIFT SYSTEM

作　　者：张连营[1] 李兆龙[1] 程敏清 

机构地区：[1]冶金部天津地质研究院,天津300061

出　　处：《黄金地质》1996年第1期46-53,共8页Gold Geology

基　　金：国家重点黄金科技攻关项目"山东五莲及沿海地区火山岩;次火山岩金矿地质特征及找矿方向"的一部分。

摘　　要：在研究沂沭裂谷系火山岩型金矿类型、分布特征、矿床微量元素、稳定同位素地球化学特征和矿物包裹体特征的基础上,指出该区火山岩型金矿成矿物质主要来源于(壳)幔源岩浆,而与基底地层无明显关系;成矿流体是以岩浆水为主的多源混合热液,矿化发生于浅成(超浅成)中低温条件下,属浅成(超浅成)中低温火山热液金矿。By studying the characteristics of distribution,trace element,stable isotopic geochemistry and mineral inclusion of volcanic-type gold deposits in Yi Shu rift system,it is indicated that the ore-forming materials of volcanic-type gold deposits in this region are mainly derived from the mantle-derived magma and have no obvious relations with basement strata,and that the ore- forming fluid is a multi-mixed hydrothermal fluid but dominated by magmatic water,the mineralization occurs in the condition of shallow(super-shallow)-seated and low-to moderate temperature.Gold deposits in this region belong to shallow(super-shallow)-seated and low-to- moderate volcanic hydrothermal deposit. Yi Shu rift;;geochemistry;;gold deposit;;Shandong

关 键 词：金矿床 地球化学 火山岩型 矿床成因论 

分 类 号：P618.510.4[天文地球—矿床学] P618.510.1[天文地球—地质学]