西藏则学地区德新铅锌矿矿床地质特征研究

Study on Geological Characteristics of Dexin Lead-Zinc Deposit in Tibet Autonomous Region

西藏则学地区德新铅锌矿位于西藏自治区谢通门县,地处西藏冈底斯Cu、Mo、Pb、Zn、Au、Fe成矿带中段。矿体主要赋存于岩浆岩与第三系火山岩的接触带,地层、岩浆岩控制了矿体的总体展布方向和空间位置。早期东西向构造对成矿起了导矿作用,晚期近南北向、北西、北东向构造是主要的容矿、储矿构造,控制了大多数矿体的分布。属标准的地层、构造、岩浆岩"三位一体"的成矿模式。矿区地质特征相对简单,北部为岩体分布区,中部为英安岩、安山岩、凝灰岩、火山角砾岩、斑岩岩脉等分布区。主要就德新铅锌矿矿床地质特征展开研究,为下一步找矿提供依据。

Dexin Lead-Zinc Mine is located in Xietongmen County,Tibet Autonomous Region.It is located in the middle of Cu,Mo,Pb,Zn,Au and Fe metallogenic belts in Gangdise,Tibet.The orebodies mainly occur in the contact zone between the magmatic rocks and the Tertiary volcanic rocks.The strata and magmatic rocks control the overall distribution direction and spatial position of the ore bodies.（According to Wang Yuliang,et al.,2010）.The early east-west tectonics played a role in ore-forming,and the late-northsouth,north-west and north-east tectonics were the main ore-bearing and ore-bearing structures that controlled the distribution of most ore bodies.Is the standard stratigraphy,structure,magmatic rock ＂trinity＂ of the mineralization model.The geological characteristics of the mining area are relatively simple,the northern part is the distribution area of the rock mass,and the central part is the distribution area of the amphibolite,andesite,tuff,volcanic breccia and porphyry.In this paper,the geological characteristics of Dexin lead-zinc deposit are studied,which provides the basis for further prospecting.