【摘要】 华南块状硫化物矿床,在成因上以同生喷气沉积为主,兼具后期叠加改造特点。在成矿时代上具多期成矿特征,尤以中—晚元古代、泥盆纪、石炭纪和晚侏罗世—白垩纪4个时代为主。在空间分布上具“成带分布、分段集中、成群产出”的规律,受拉张性背景、火山或热泉活动及特殊岩相古地理环境控制。重要矿床集中于一些特殊成矿结中。成矿作用表现出明显的继承性和新生性,成矿物质组合也随着时间和空间而发生规律性变化。需指出,江南古陆周缘,尚未发现大铜矿的成矿带,在前寒武纪含矿层内应重视找铜。更多还原

【Abstract】 Massive sulphide deposits (MSD) in South China are believed to be formedoriginally by submarine exhalative-sedimentary processes and then transformedand superimposed by late-stage tectonic and hydrothermal processes. There areseveral epochs for the formation of MSD, particularly those of the Mid-Late Pro-terozoic, Devonian, Carboniferous and Late Jurassic to Early Cretaceous. Metal-logenic space are strongly controlled by tectonic extension, magmatic culminationand paleogeographic and lithofacies transition. The MSD in South China are distributed in belts and clustered in separatedareas. Five metallogenic belts are delineated in South China. They ate, all locaiednear boundaries between terranes or other tectonic units; appear to be in closespatial and genetic relation to mantle bulge beneath the crust; and occur inelongated basins. MSD are usually densely distributed around some particularcenters in specific metallogenic belt to form deposit clusters. Deposit clusters arethought to be controlled by those factors where are intersections of large basementfaults, intense magmatism, synsedimentary depressions and so forth. Metallogenesis of MSD in South China is characterised by inheritance of pol-ycyclic deposits. MSD of various ages exist in the same metallogenic belt. Forinstance, MSD in the Lower Yangtze retion are of four metallogenic epches. It is most probobly the transformation and superimposition of MSD by late-stage intrusions that caused the coexistence of these deposits with skarn-and/orporphyry-type deposits in a small areal. Criteria for ore prospecting in South China are proposed.更多还原