湖南雪峰山地区沈家垭金矿成矿学及年代学研究  

Metallogenetic and Isotopic Chronological Study on the Shenjiaya Gold Deposit in Xuefeng Mountains,Hunan Province

作　　者：陈富文[1] 戴平云[1] 梅玉萍[1] 李华芹[1] 王登红[2] 蔡红[1] 

机构地区：[1]中国地质调查局宜昌地质矿产研究所,湖北宜昌443003 [2]中国地质科学院矿产资源研究所,北京100037

出　　处：《地质学报》2008年第7期906-911,共6页Acta Geologica Sinica

基　　金："十一五"国家科技支撑计划项目"南岭地区有色-贵金属成矿潜力及综合探测技术示范研究"(编号2006BAB01B03)资助的成果

摘　　要：湘西沈家垭大型金矿是雪峰山地区颇具代表性的金矿床介绍,矿体分布于新元古界板溪群马底驿组第四岩性段中,矿化作用严格受北东东向沃溪和香草湾等深大断裂和唐浒坪复式背斜的联合控制。本次研究获得该矿床含金石英脉Rb-Sr等时线年龄为90.6±3.2Ma,表明成矿作用发生于晚白垩世,成矿作用可能与燕山期区域性大规模的逆冲-推覆作用密切相关,矿床成因类型为构造热液型。The Shenjiaya gold deposit is a representative one in the Xuefeng Mountains, western Hunan Province. The Rb-Sr isochron age of the inclusions in quartz from the deposit is 90. 6±3. 2Ma, which indicates that the mineralization happened during the Yanshanian Period. Orebodies of the deposit are strictly controlled by the fourth Member of the Madiyi Fm. , Neoproterozoic Banxi Group and the gold mineralization might be related to large scale of regional thrust-nappe events, and the deposit should be attributed to tectonic hydrothermal origin.

关 键 词：沈家垭金矿 成矿年代学 雪峰山地区 湖南 

分 类 号：P618.51[天文地球—矿床学] P597[天文地球—地质学]