祁漫塔格地区铁多金属矿床成矿特征及成因探讨  

Metallogenic Features and Genesis of Fe Polymetallic Deposits in the Qimantage region

作　　者：谭文娟[1] 姜寒冰[1] 杨合群[1] 高永宝[1] 

机构地区：[1]中国地质调查局西安地质调查中心,陕西西安710054

出　　处：《地质与勘探》2011年第2期244-250,共7页Geology and Exploration

基　　金：国家科技支撑计划项目(2006BAB01A01);中国地质调查局地质大调查项目(1212010813046和1212010881632及1212010911032)

摘　　要：祁漫塔格地处东昆仑造山带西段,该区建造组成丰富,断裂构造发育,断层构造以北西西走向为主,华力西-印支造山旋回中酸性侵入岩浆活动强烈。在综述祁漫塔格地区成矿地质背景基础上,通过对区内肯德可克铁钴铋金矿床、野马泉铁锌矿床和迪木那里克典型铁矿床地质特征分析,并以肯德可克矿床为例,对比了不同成因类型铁矿床中磁铁矿的化学成分组成,探讨了区内铁多金属矿床成因类型。研究认为,区内铁矿床形成经历了早期火山喷流-沉积作用、区域变质作用,后期矽卡岩化-热液叠加改造作用等多期、多样性的成矿演化过程。The Qimantage region is situated in the west segment of the East Kunlun orogenic belt,which is characterized by abundant formations and compositions,predominant NWW trending faults,and intensive intermediate-acid intrusive magma activity during the Variscan-Indosinian orogenic cycle.In this paper,we make a review of geological setting for metallogenesis in this region,and analyze the geological features the Kendekeke,Yemaquan,and Dimunalike Fe polymetallic deposits.Taking the Kendekeke deposit as an example,we compare chemical compositions of magnetite of deposits of different genesis types,and explore the genesis of Fe polymetallic deposits in the study area.It is suggested that the formation of the iron deposits in this region is associated with a mineralization evolution process of multiple periods and diversity,including early volcanic exhalation-sedimentation,regional metamorphism,and later skarnized-hydrothermal superposition.

关 键 词：祁漫塔格 铁多金属矿 矿床地质特征 矿床成因 

分 类 号：P618.31[天文地球—矿床学]