铜陵矿集区是长江中下游成矿带七大矿集区之一 ,构造上经历了晚古生代的陆缘裂陷、中三叠世的陆_陆碰撞和侏罗纪—白垩纪的陆内构造_岩浆活动。晚石炭世的海底喷流沉积形成了广泛分布的块状硫化物 ,除部分构成块状硫化物矿床外 ,还为燕山期中酸性岩浆活动形成的矽卡岩型矿床提供了部分硫和金属物质。为了查明海西期喷流沉积流体系统及其时空展布特征 ,在铜陵矿集区内开展了以流体活动记录为对象的蚀变_流体填图工作。结果显示 ,海西期喷流沉积流体系统不仅形成以块状硫化物为主体的喷流沉积记录 ,而且在下伏岩系中遗留了区域规模的流体蚀变记录。以块状硫化物为主体的喷流沉积记录构成 3个喷流沉积旋回 ,在垂向上和横向上均具有成分和结构的分带性。流体蚀变记录在上部构成顺层蚀变带 ,在中部构成沿断裂和裂隙充填的石英_硫化物脉体群 ,在下部则构成半整合蚀变带 ,表明喷流沉积流体系统由下渗的海水在下部半整合蚀变带形成储集区 ,经高地热异常的加热后 ,沿中部脉体群向上迁移 ,在进入顺层蚀变带后沿砂岩层向两侧扩散 ,最后经同生断裂和裂隙向海底喷出。块状硫化物与蚀变岩、喷流沉积旋回及硫化物硫同位素的空间展布特征 ,显示区内存在 3个受基底断裂控制的NWW向延伸的流体活动域 ,包含 6个以上的流体储 The Tongling Ore Concentration Area is one of the seven major mineralized areas in the metallogenic belt in the middle and lower reaches of the Yangtze River. It has been characterized by Late Paleozoic continental rift, Middle-Triassic land-continental collision and Jurassic-Cretaceous intracontinental Structure _ Magmatic activity. The late Carboniferous submarine jet deposits formed widespread sulphide masses that, in addition to being part of a massive sulphide deposit, also provided partial sulfur and metallic materials for the skarn-type deposits formed by intermediate-acid magmatism during the Yanshanian period. In order to find out the Hercynian jet flow sedimentary fluid system and its spatiotemporal distribution characteristics, an alteration_fluid mapping was carried out in Tongling ore concentration area. The results show that the Hercynian jet flow sedimentary fluid system not only forms the jet stream sedimentary record with mass sulphide as the main body, but also records the regional scale hydrothermal alteration in the underlying rock series. Jet deposition records, which are dominated by massive sulphides, constitute three jet deposition cycles that have compositional and structural zonality both vertically and laterally. The fluid alteration records the upwelling strata alteration zone in the upper part, the quartz-sulfide plume group in the middle part along the faults and fractures, and the semi-integral alteration zone in the lower part, indicating that the jet fluid deposition system consists of infiltration The seawater forms a reservoir zone in the lower semi-integrated alteration zone, which is heated by high geothermal anomalies and migrates upwards along the veins of the central group. It diffuses to both sides along the sandstone layer after entering the upwelling zone, And cracks to the bottom of the jet. Massive sulphides and altered rocks, spout sedimentary cycles and the spatial distribution of sulphide sulfur isotopes show that there are three NWW-extended fluid activity domains controlled by basement faults and contain more than 6 fluid reservoirs