【摘要】 目前在扬子北缘已发现的铅锌矿床主要分布于震旦系地层中,新近发现的多个大、中型铅锌矿床表明区域找矿潜力巨大。通过对扬子北缘震旦系中铅锌矿形成的含矿建造、控矿构造、岩相古地理、地质流体等成矿条件的系统研究,分析区域成矿的特点,认为区域含矿地层主要为震旦系灯影组白云岩,成矿金属来源于震旦纪—寒武纪地层,成矿流体主要来自海水,有大气降水的加入,矿床形成受背斜(穹窿)构造控制。初步建立铅锌矿的成矿模式,以期服务于本区铅锌矿床的勘查与研究。更多还原

【Abstract】 The found lead-zinc deposits in the northern margin of Yangtze Landmass are mainly hosted in Upper Sinian,where is of enormous prospecting potential.The ore-bearing formation,ore-controlling structure,lithofacies paleogeography and geological fluid of lead-zinc deposits are studied to analyze its regional metallogenitic characteristics.Therefore,the results are concluded as follows:the dolomite of Dengying formation in Sinian is main regional ore-bearing bed;ore-forming metals are derived from the Sinian-Cambrain strata;ore-forming fluid comes from sea-water and atmospheric precipitation;and the formation of deposit is controlled by anticline(dome).In the paper,the metallogenic mode of lead-zinc deposit is established in order to serve for the exploration and investigation of lead-zinc deposit in this region.更多还原