矿产与地质
礦產與地質
광산여지질
MINERAL RESOURCES AND GEOLOGY
2014年
5期
560-567
,共8页
马国栋%李玉莲%李海宾%李永太%马福贵%李少南
馬國棟%李玉蓮%李海賓%李永太%馬福貴%李少南
마국동%리옥련%리해빈%리영태%마복귀%리소남
铅锌多金属矿%矿床地质特征%矿床成因%沙柳河%青海
鉛鋅多金屬礦%礦床地質特徵%礦床成因%沙柳河%青海
연자다금속광%광상지질특정%광상성인%사류하%청해
Pb-Zn polymetallic deposit%geological characteristic of deposit%deposit genesis%Shaliuhe
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。
沙柳河礦區位于柴達木盆地東南緣阿爾茨託山南東段阿爾茨託山複式嚮斜南翼。為研究沙柳河礦區鉛鋅多金屬礦床成因類型,分析瞭礦區地質揹景、礦床(體)特徵、巖(礦)石化學成分及含量,研究認為礦區是以鉛鋅為主的多金屬礦床,礦體主要產于金水口巖群地層,沿一定的地層層位分佈,具多期多階段成礦特徵。礦床的形成和縯化經歷瞭火山噴溢沉積作用成礦期、巖漿期後成礦作用期和錶生作用期三箇階段,礦床成因受地層、巖漿巖、構造關繫密切,礦床類型初步定為變質巖中矽卡巖型鉛、鋅多金屬礦床。
사류하광구위우시체목분지동남연아이자탁산남동단아이자탁산복식향사남익。위연구사류하광구연자다금속광상성인류형,분석료광구지질배경、광상(체)특정、암(광)석화학성분급함량,연구인위광구시이연자위주적다금속광상,광체주요산우금수구암군지층,연일정적지층층위분포,구다기다계단성광특정。광상적형성화연화경력료화산분일침적작용성광기、암장기후성광작용기화표생작용기삼개계단,광상성인수지층、암장암、구조관계밀절,광상류형초보정위변질암중석잡암형연、자다금속광상。
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.