新疆东天山铅锌矿成矿规律及区域预测

Metallogenic rules and regional prediction of lead-zinc in eastern Tianshan area, China

摘要: 东天山是中国西部重要的成矿区带，具备极佳的成矿条件。东天山的铅锌(银)矿主要分布于塔里木古陆块,部分产于阿奇山早石炭世裂谷带，矿床类型可分为层控-热液改造型、矽卡岩型、热液型和火山岩型4种，以层控-热液改造型为主。通过对研究区彩霞山等典型矿床的研究，总结了该区铅锌矿的成矿规律，确定了预测要素。在此基础上运用证据权法划分了68个预测区，并对预测区进行了评述，认为东天山具有很好的寻找层控-热液型铅锌矿的前景。

Abstract: Being one of the most important metallogenic regions of western China, eastern Tianshan area has wonderful conditions for Pb-Zn deposits formation. Pb-Zn deposits are located in Tarim ancient land block mainly and some of them are in Aqishan Early Carboniferous rift zone secondly. There are four deposit types: Strata-bound type, scarn type, hydrothermal type and volcanic massive sulfide type. We summarize the predictive elements based on study of typical deposits. Using Evidence Weight method, we delineated 68 forecasting areas. Geological features of this area suggest good prospecting potential.