辽宁毛家店石英脉型金矿赋矿岩体年代学及其地质意义  

Chronology of Zircon U-Pb and its geological significance of Maojiadian quartz vein type gold deposit,Liaoning

作　　者：邹滔[1] 王玉往[1] 王京彬[1] 张会琼[1] 赵路通[1] 石煜[1] ZOU Tao WANG Yu-wang WANG Jing-bin ZHANG Hui-qiong ZHAO Lu-tong SHI Yu(Beijing Institute of Geology for Mineral Resources,Beijing 100012)

机构地区：[1]北京矿产地质研究院,北京100012

出　　处：《矿产勘查》2016年第6期923-928,共6页Mineral Exploration

基　　金：国家自然科学基金(编号:41030424);国家重点基础研究发展计划(973计划)项目(编号:2014CB440803);"十二五"国家科技支撑计划重点项目(编号:2011BAB06B03-05);中国地质调查局地质调查项目(编号:12120113059800)联合资助

摘　　要：毛家店石英脉型金矿为冀东重要的金矿化类型。通过LA-ICP-MS定年方法,获取毛家店金矿赋矿岩体锆石U-Pb年龄为(223.3±2.0)Ma,其年龄与南东侧的都山岩体和柏杖子金矿花岗岩年龄在误差范围内是一致的,表明毛家店黑云母二长花岗岩与都山岩体为同一岩浆演化的产物。区域上,三叠纪岩浆岩的广泛分布,暗示它是一次重要的构造岩浆事件产物;岩体侵位时间暗示其形成的大地构造背景为后碰撞环境—板内伸展背景。The Maojiadian gold deposit is an important quartz vein type in the eastern Hebei Province.According to measurement result of Zicon U-Pb by LA-ICP-MS method,the age of ore-hosting rock（biotite monzonitic granite） in Maojiadian deposit area is（223.3±2.0） Ma.The age is similar with that of ore-bearing rock（granite） of Dushan and Baizhangzi deposits.It indicates that biotite monzonitic granite and Dushan granite has the same origin.Additionally,the Triassic igneous rocks are widely distributed in region,which indicated a important tectono-magmatic event.The emplacement age of the biotite monzonitic granite implies a post collision-intraplate extension tectonic environment.

关 键 词：年代学 U-PB 毛家店金矿 辽宁凌源 

分 类 号：P618.51[天文地球—矿床学]