玻利维亚阿力安萨铜矿床地质特征与成因分析

Analysis on Geological Features and Genesis of Alianza Copper Deposit in Bolivia

概要地介绍了阿力安萨铜矿床区域成矿地质背景和矿床特征,区内共发现两个铜矿化层、4条铜矿体。铜矿体均产于上第三系渐新统第二岩性段含铜砾岩、砂砾岩层中,矿体呈似层状、层状、透镜状,其形态严格受地层控制,矿床成因类型为沉积砂砾岩型。火山活动为成矿带来了大量的物质来源与成矿条件,第三系大孔隙度的砂岩、砂砾岩为成矿提供了空间和场所。

this paper summarily introduces the Alianza metallogenic geological background and characteristics of the copper deposit area,where two copper layer 4 copper ore body areas were found. Copper ore body are produced in the second lithologic section copper tertiary Oligocene conglomerate,gravel strata,with layered,stratified,lenticular form,its configuration is strictly controlled by strata,deposit genetic types of sedimentary sand conglomerate type. Volcanic activity for metallogenic belt a lot of material sources and metallogenic conditions,tertiary large porosity of sandstone and glutenite provided ore-forming space and place.