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兰坪盆地两侧的金沙江—红河大断裂、澜沧江大断裂以及盆地中轴深大断裂是该区深源流体活动主要通道 ,并成为该区深源流体成矿的重要控制因素。通过贯穿兰坪盆地及两侧造山带剖面上不同部位方解石脉微量元素地球化学研究 ,讨论了盆地内外成矿流体活动的差异 ,并结合前人已有的研究成果 ,认为兰坪盆地及其两侧矿床的成矿物质均与深部流体活动有关。同时 ,不同蚀变过程 (热接触交代变质与热液蚀变 )中 REE地球化学变化行为相似 ,反映了构造岩浆活动与该区成矿作用具有密切的关系。
The Jinshajiang-Honghe great fault and the Lancangjiang great fault on both sides of the Lanping basin and the deep axis faults in the basin are the main channels for the deep-sea fluid activities in this area, and have become the important controlling factors for the metallogenesis of the deep source fluids in this area. Based on the trace element geochemical study of calcite veins in different parts of the profile of the orogenic belt in the Lanping basin and on both sides, the differences of ore-forming fluid activities in and out of the basin are discussed. Based on the previous research results, it is considered that the Lanping basin and its two The ore-forming materials of side deposits are related to deep fluid activities. At the same time, the REE geochemical behavior in different alteration processes (thermal contact metamorphism and hydrothermal alteration) is similar, which shows that the tectono-magmatic activity is closely related to the mineralization in this area.