金、硅和硫化物迁移富集层次性模拟实验与构造机制研究

深部金品位变化规律与构造间关系是隐伏矿体定位预测的难点。采用高温高压模拟实验对硫化物、硅和金分别进行迁移、富集层次性研究， 表明矿体与矿体、矿床与矿床垂向间距约是水平间距的１２ ～１５ 倍， 金品位在不同层次间呈贫富交替变化。该认识在激电法基础上进行成矿定位预测已初见成效。此外， 从构造增热、构造变异、构造流体、构造降压和构造耦合５ 个方面对成矿元素迁移、富集层次性的构造机制进行探讨， 指出构造机制与矿质来源存在密切关系， 它有助于动力成岩成矿理论的进一步深化

IMITATION EXPERIMENT AND TECTONIC MECHANISM OF THE GRADATIONS OF AU, SIO\-2 AND SULFIDE MIGRATION AND CONCENTRATION

The relation between gold grade variation and structure in deep is the key to location and prognostication of concealed ore body. Study on migrating and concentrating gradations of Au, SiO\-2 and sulfide is carried out by high\|temperature and high\|pressure imitating experiment. The result indicates that the vertical distance between two orebodies or two ore deposits is 1 2～1 5 times as long as level distance and low gold grade alterates with high gold grade among gradations. On the basis of induced polarization method, the thoughts have won initial success in metallogenic locating prognosis. In addition, tectonic mechanism about migrating and concentrating gradations of metallogenic elements is studied by tectionc heating, tectionc deformation, tectonic fluid, tectonic pressure reduction and tectonic coupling. The study result shows a close relation between tectonic mechanism and origin of metallogenic elements, so it is helpful to deepen diagenetic metallogenic theory further.