云南新平佐思孔铅锌矿矿床地质特征与成矿规律

佐思孔矿床是云南“山”字型前弧西翼与哀牢山构造带交汇部位的铅锌多金属矿床，由于矿床同时存在多种矿化类型而备受关注，然而针对矿床成矿特征差异性缘由尚未厘定，有关成矿作用的综合研究尚显薄弱，整体成矿模式亟待成立。对区域地质背景、矿床地质特征、矿化规律进行了研究，结果表明：矿（化）体赋存于早元古代大红山群基底地层的石英脉及上三叠统地层与下伏大红山群地层不整合面的层间构造裂隙带中；燕山期末—印支期的构造作用是矿床形成的主导因素，大红山群作为矿源层，为矿床的形成提供了大量成矿物质，成矿元素在构造作用的驱使下得以活化、运移，断裂构造为矿质提供了运移通道和赋矿场所。

Geological Characteristics and Metallogenic Regularity of Zuosikong Lead zinc Deposit in #br# Xinping County,Yunnan Province

Zuosikong Deposit is a lead zinc deposit which located in intersection part between the western wing of Yunnan “mountain” shape arc and Ailaoshan structural belt.Among them,Zuosikong Lead zinc Deposit attracts particular attention because it owes variety mineralzation types.However,the reason for the different geological characteristics has not been redefined.In addition,the comprehensive study of metallogenic series is relatively weak,and the metallogenic model is urgent to be established.Based on the regional geological background,deposit geological characteristics and mineralization regularity are studied.The resutls show that the ore bodies (mineralization) are occurred in quartz vein of basement strata of Dahognshan Formation in Early Proterozoic.Besides that,the structure fracture zone between Upper Triassic and the unconformity surface of in underlying Dahongshan Formation are the favorable ore bearing space.The most important factor of the ore formation are the tectonism in Yanshanican Indo Chinese Epoch,and the metallogenic material are mainly derived from the Dahognshan Formation.The ore forming elements have been activated and migrated by the impel of tectonism,and the fault structure provided migration pathway and ore bearing sites to mineral deficiency.