论文部分内容阅读
运用裂谷深部成矿作用理论，结合东川中元古宙裂谷的构造背景及矿床地质地球化学特征，建立了与裂谷发展不同阶段相对应的成矿模式及系列，即裂谷发育早期，以火山作用为主，矿化为高铁适度富铜、硫体系，形成稀矿山式铁铜矿床；裂谷发育中期以喷流作用为主，矿化为高铜适度富硫体系，形成蓑衣坡式及东川式铜矿床；裂谷发育晚期以喷气作用为主，矿化为高硫适度富铜体系，形成桃园式铜矿床；裂谷封闭之后以动力改遣和富碱基性岩浆隐爆为主，矿化为高铜适度富硫体系，形成只矿尖子式及白锡腊式铜矿床。
Based on the theory of deep rifting mineralization and the tectonic setting of Middle Proterozoic rift in Dongchuan and the geological and geochemical characteristics of ore deposits, the metallogenic models and series corresponding to different stages of rift development have been established, that is, the early rift development, The main volcanism, mineralization of high-speed rail modest copper-rich, sulfur system, the formation of a thin mines iron-copper deposits; mid-rifting jet flow-based, mineralized into high copper moderate sulfur-rich system, And Dongchuan copper deposit. The later rifting developed mainly by jet, and mineralized into high-sulfur moderate copper-rich system to form Taoyuan-type copper deposit. After the rift was closed, hydrodynamic reform and enrichment of basic magma Cryptoexplosion-based, mineralized as high-copper moderate sulfur-rich system, forming only mine tip type and white tin wax copper deposits.