湖南衡阳清水塘矿区断裂构造控矿特征  

Ore-control characteristics of the fault structures in the Qingshuitang ore district of Hengyang,Hunan Province

作　　者：肖文舟 匡文龙[1] 李雪宇 谭玉阳 贺伟红 

机构地区：[1]湖南科技大学土木工程学院,湖南湘潭411201 [2]湖南金水塘矿业有限责任公司,湖南衡阳421600

出　　处：《地质学刊》2016年第1期97-106,共10页Journal of Geology

基　　金：国家高等学校特色专业建设点项目(TS11027);湖南省国土资源厅项目"湘西北铅锌富集机理研究"(B41101);湖南省国土资源厅科技项目(2014-05);湖南科技大学研究生创新基金项目(S140010)

摘　　要：清水塘矿田位于断裂带中,矿体的形态、产状、规模及矿化富集除与地层岩性有关外,主要受断裂破碎带控制。通过分析清水塘区域构造控矿特征和矿区断裂构造控矿特征,总结了清水塘矿区断裂构造控矿的特点,认为多组断裂以及背斜和断裂的交汇部位均是铅锌矿体的主要富集部位;在成矿演化过程中,由于构造-岩浆活动及含矿热液的运移,断裂张开,热液充填沉淀结晶形成矿脉;当一部分矿液渗透到围岩中,继续沿微裂隙转移、萃取、活化、重新产生压裂,使裂隙张开,在构造-岩浆活化影响下,形成新的矿体。深大断裂作为导矿构造控制着含矿热液的运移空间,次级断裂作为容矿构造控制着矿化的富集部位。The Qingshuitang ore district in Hunan Province occurs in fault zone, and the shape, occurrence, size and mineralization enrichment of its orebodies show a main control by fault fracture zone, as well as the lithology of strata. With analysis of the regional structures in the Qingshuirang area and fault structures in the mine, this study summarized the ore-controlling characteristics of the faults. It is considered that the intersection of multiple faults, and intersection of anticlines with fractures are the main sites of lead-zinc enrichment. During the metallogenic evolution, tectonic-magmatic activities and migration of hydrothermal fluids resulted in the opening of fractures, and hydrothermal fluids precipitated and crystallized to form ore lodes. When part of ore fluids penetrated into the surrounding rocks, they continued to transfer, extract and activate along microcracks to regenerate fracturing, and new orebodies were formed under the influence of tectonic-magmatic activation. Deep faults acting as ore conduit structures control the migration space of hydrothermal ore fluids, and secondary faults as ore host structures control the mineralization enrichment.

关 键 词：断裂 构造控矿 成矿演化 清水塘矿区 湖南衡阳 

分 类 号：P613[天文地球—矿床学] P618[天文地球—地质学]