西藏那曲县尤卡朗铅银矿床控矿条件与矿化分布规律  

Ore Controlling Condition and Mineralization distribution of Youkalang Lead-silver deposit in Xizang

作　　者：张哨波[1,2] 杜欣[1,2] 张景超[1,2] 孙丹[1,2] 

机构地区：[1]河南省地质调查院,郑州450001 [2]河南省地矿局区域地质调查队,郑州450051

出　　处：《华南地质与矿产》2009年第1期26-30,共5页Geology and Mineral Resources of South China

基　　金：中国地质调查局国土资源大调查项目(编号1212010630103)

摘　　要：尤卡朗铅银矿床处于尤卡朗-同德铅银多金属成矿带中部,纳木错-嘉黎断裂带北侧。主要控矿条件包括基底地层和构造。主断裂派生的次级断裂构造控制了矿床的定位和空间展布,侏罗纪马里组地层是重要矿源层。后期热事件使成矿元素富集,并在压力驱使下沿构造裂隙上升,在围岩有利地段充填交代形成矿床。根据矿体在空间上的展布和变化规律及异常特征,对矿区边部和深部隐伏矿体进行了预测。Youkalang lead - silver deposit in Youkalang - Tongde lead silver polymetallic ore belt in the central, Namucuo - Jiali fault zone on the north side. The main ore - controlling conditions are the basement strata and structure etc. Main fault derived from sub - faults controlled the location of the deposits and spatial distribution, Jurassic Mali Group is an important source bed. Hot events of the late - forming dement enrich- ment, and the pressure driven by rising along the tectonic fissures in the surrounding lots filled favorable account of the formation of deposits. According to spacial distribution of the ore body, abnormaly in the law and characteristics of the mining area, the edge and deep concealed ore body had been forecast.

关 键 词：铅银矿床 控矿条件 成矿模式 隐伏矿体预测 西藏尤卡朗 

分 类 号：P618.42[天文地球—矿床学] P618.52[天文地球—地质学]