海相火山岩型伴生金矿床的时空分布特征及区域控矿作用

从伴生金的角度对我国海相火山岩型伴生金矿床的时空分布特征及区域控矿作用进行了总结：划分出清源、蒙中、中条、北祁连、南祁连、康滇、玉树—义敦７个成矿带；海相火山岩型伴生金矿床最主要的成矿期为加里东期：海相火山岩型伴生金矿床在两大地台中，扬子准地台多于中朝准地台，在三大褶皱系中，古亚洲褶皱系最多；海相火山岩型伴生金矿床多产于受深大断裂或板块碰撞带控制的大陆边缘裂谷或岛弧裂谷中；控矿海相火山建造中基性火山岩及分异完整的双峰式火山岩的基性端元部分与成矿关系密切。

SPACE-TIME DISTRIBUTION AND REGIONAL ORE-CONTROLLING PROCESS OF MARING VOLCANIC TYPE ASSOCIATED GOLD DEPOSITS

This paper has sumarized the space-time distribution and regional ore-controlling process of marine volcanic type associated gold deposits in China from the aspect of associated gold, divided into 7 mineralization zons: Qingyuan, Central Nei Monggu, Zhongtiao, North Qilian, South Qilian, Xikang-Yunnan and Yushu-Yidun The major mineralization epoch of the deposits is during Caledonian epoch They are distributed are within two major platforms: Yangtze para-platform and Sino-Korean paraplatform, the former being more than the later for their destribution They are mostly distributed in the Paleo-Asiatic fold system among the three major fold systems The associated gold deposits mostly occur in continental margin rift or island-arc rift controlled by deep seated faults and plate subduction zone In the marine volcanic formation, the basic volcanic rocks or the basic end-member part of the bimodal volcanic rocks which are completely differenciated, are closly related to the gold mineralization