胶西北金矿集区成矿作用发生的地质背景

通过矿集区赋存的地质背景 ,包括区域重大地质事件、壳幔结构、深断裂及浅层断裂系的导流性、区域流体活动、地层建造及岩浆侵入事件等研究 ,建立了矿集区形成与演化框架 ,并提出了形成的必备因素。成矿诸因素间彼此关联、耦合为大型矿集区的形成提供了必备而优越的条件。地质演化历史中构造体制转换事件是大规模成矿作用发生的基础 ,其引起的区域壳幔物质交换、岩浆活动等系列事件及耦合作用为区域成矿作用提供了充足成矿物质、良好导流网络、丰富成矿流体、持续成矿能量等必备条件 ,最终导致矿集区的形成。

The geological settings to the gold metallogeny in northwestern Jiaodong Peninsula, Shandong Province

Based on the macroscopic studies of tectonic settings of the deposit concentrated area, including the regional giant geological events, crust-mantle structure, deep level fractures, low level fractures and its fluid guiding properties, regional fluid activity, stratum formation, and magmatic intrusion, the authors, in this paper, establish a formation and evolution framework of the deposit concentrated area and generalize the essential factors for its formation. The correlation and coupling of all factors mentioned above created the basic and superior conditions for the formation of the deposit concentrated area. The transformation of tectonic regimes is the basis of mass metallogeny in the development of geological history, which caused the coupling process of crust-mantle interaction, magmatic activity and a series of geological events; and supplied regional metallogenic events with essential abundant ore-forming materials, fluids and their guiding web, and sustained energy; and finally formed the deposit concentrated area.