青海省都兰县沙柳河南区铅锌多金属矿地质特征及矿床成因分析  

Geological characteristics and genesis of Pb-Zn polymetallic deposit in Southern Shaliuhe area in Dulan of Qinghai

作　　者：马国栋 李玉莲 李海宾 李永太 马福贵 李少南 

机构地区：[1]青海省地质调查局,青海西宁810000 [2]青海省第一地质矿产勘查院,青海平安810600 [3]青海省第五地质矿产勘查院,青海西宁810028

出　　处：《矿产与地质》2014年第5期560-567,共8页Mineral Resources and Geology

摘　　要：沙柳河矿区位于柴达木盆地东南缘阿尔茨托山南东段阿尔茨托山复式向斜南翼。为研究沙柳河矿区铅锌多金属矿床成因类型,分析了矿区地质背景、矿床(体)特征、岩(矿)石化学成分及含量,研究认为矿区是以铅锌为主的多金属矿床,矿体主要产于金水口岩群地层,沿一定的地层层位分布,具多期多阶段成矿特征。矿床的形成和演化经历了火山喷溢沉积作用成矿期、岩浆期后成矿作用期和表生作用期三个阶段,矿床成因受地层、岩浆岩、构造关系密切,矿床类型初步定为变质岩中矽卡岩型铅、锌多金属矿床。Shaliuhe mining area locates at south wing of Aercituo Mountain composite syncline of southeast section of Aercituo Mountain at southeast rim of Qaidam Basin.In order to study the genesis type of Pb-Zn polymetallic deposit in Shaliuhe mining area,this paper analyzes geological background of the mining area, characteristics of deposits (ore-bodies),chemical composition and content of rocks (ores).It is believed that the deposits in this mining area are mainly Pb-Zn polymetallic deposits,and the ore-bodies mainly occur in Jinshuikou group strata along a certain stratigraphic horizon and are characterized by multi-phase and multi-stage mineralization.The formation and evolution of deposits experiences three stages including volcanic e-ruption sedimentation ore-forming stage,postmagmatic ore-forming stage and hypergenesis stage.The gene-sis of deposit is closely related to strata,magmatic rocks and structure.The deposit is initially determined as Skarn type Pb-Zn polymetallic deposit in metamorphic rocks.

关 键 词：铅锌多金属矿 矿床地质特征 矿床成因 沙柳河 青海 

分 类 号：P618.4[天文地球—矿床学]