论文部分内容阅读
缺气环境中，金属从海水、古卤水或热水溶液中被吸附和沉淀而发生积聚。在后来的变质和岩浆作用过程中，金属重新活化，形成矿床。这种矿化类型主要受缺氧环境的构造背景类型控制。被动边缘的碳质沉积岩只含有铀、钒和钼的次经济富集；含铜黑色页岩和海底喷流型矿化则限于大陆裂谷和拉拗槽环境或活动边缘的弧后盆地；变质矿床主要与碰撞边缘有关，但也出现于其它的构造环境类型。含铜黑色页岩的形成，受地球演化过程中超大陆裂开时低海平面期的控制。在高海平面期，黑色页岩中积聚的铀和钒含量增高；含铜和含铀黑色页岩矿床中岩性控制明显；相反，多金属矿化的产出并不取决于碳质沉积物的岩性成熟性。
In a gas-deficient environment, metals accumulate by adsorption and precipitation from seawater, ancient brine or hot water solutions. In later metamorphism and magmatism, the metal was reactivated to form a deposit. This mineralization type is mainly controlled by the tectonic setting of the hypoxic environment. Passive-edge carbonaceous sedimentary rocks only contain secondary economic enrichment of uranium, vanadium and molybdenum; copper-bearing black shale and submarine spout-type mineralization are restricted to back-arc basins in continental rift and pull-decay trough environments or active margins; The deposit is mainly associated with the collision edge, but also occurs in other tectonic settings. The formation of black shale containing copper is controlled by the low sea level during the evolution of the supercontinent during the Earth’s evolution. At high sea level, uranium and vanadium accumulate in black shales, while lithology in copper-bearing and uranium-bearing black shale deposits is significant. Conversely, polymetallic mineralization does not depend on carbonaceous sediments Lithology maturity.