一、大地构造对矿床的控制作用骆耀南研究本区前震旦纪沉积地层、岩浆活动、变质作用和成矿特征时指出:“在前震旦纪时康滇地轴是大陆古板块边缘与西边一海泽古板块接触带上的造山带,两个板块分界线的类型,同近代环太平洋具岛弧、海沟和陆缘海等特征的板块构造型式可能大体相仿”。而岛弧海沟体系消亡后,转为晚 I. THE CONTROLLING EFFECT OF THE TERRESTRIAL STRUCTURE ON ORE DEPOSITS LUO Yaonan studied the sedimentary stratigraphy, magmatism, metamorphism and metallogenic characteristics of the former Sinian in this area: “During the Pre-Sinian, the axis of the Kangdi-Dian was the edge of the old plate of the continent, The orogenic belts on the belt contact with the ancient plate, the type of the boundary line between the two plates may be roughly the same as the plate tectonics of the modern Pacific Rim with arcs, trenches and marginal seas. ” The island arc trench system died, turned to late