论文部分内容阅读
以胶东金矿集中区矿源系统为例 ,运用现代分形理论、数学地质和模拟实验等方法 ,探索矿质来源和富集过程。结果表明 ,胶东群正变质岩的原岩——太古代拉斑玄武岩为初始矿源岩 ;太古代—元古代胶东群、荆山群和粉子山群变质岩为中间矿源岩 ;中生代剪切重熔岩浆岩——玲珑型花岗岩和郭家岭型花岗岩是成矿物质的直接提供者 ;郭家岭型花岗岩可能既为金成矿提供物质来源 ,又起到“热机”作用。金的成矿作用是在古老地幔分异出的太古代拉斑玄武岩基础上 ,经韧性剪切→区域变质→岩浆重熔等构造热动力作用逐步富集的过程 ,该认识为找矿勘探指明了方向
Taking the mineral source system in the centralized area of Jiaodong gold mine as an example, this paper uses modern fractal theory, mathematical geology and simulation experiments to explore the source and accumulation process of mineral resources. The results show that the Proterozoic-Archean tholeiite basalts from the Jiaodong Group metamorphic rocks are the initial source rocks, and the Archean-Proterozoic Jiaodong Group, Jingshan Group and Fenzishan Group metamorphic rocks are intermediate source rocks. The Mesozoic shear-reclaimed magma The rocks - extrusive granites and Guojialing granites are the direct suppliers of ore-forming materials. The Guojialing granites may provide both the material source and the “heat engine” for gold mineralization. The metallogenic process of gold is a process of enrichment by thermodynamic forces such as ductile shearing → regional metamorphism → magmatic remelting based on the Archean tholeiite basalts distinct from the ancient mantle, The direction