攀西地区金属成矿系统

Metallization systems in the Panzhihua-Xichang area of Sichuan,China

在简要分析了攀西地区基底演化、裂谷叠加、峨眉火成岩省、喜马拉雅期构造-岩浆-流体活动等重大地质事件及其成矿作用的基础上,将该区金属成矿划分为5个成矿系统,14个成矿亚系统,即:元古宇与火山-沉积-变质作用有关的铁铜成矿系统;晋宁-澄江期岩浆-热液成矿系统;新元古-早古生代沉积-改造型铅锌多金属成矿系统;峨眉火成岩省成矿系统;喜马拉雅期构造-岩浆-流体活动成矿系统。并论述了主要成矿系统的组成、结构及成矿规律。

This paper analyses the significant geological events such as the basement evolution, rift overprint, Emei igneous province, structure-magma-fluid activities in Himalayan cycle and metallization in the Panzhihua-Xichang area. Based on this, the metallization is divided into five main metallization systems and fourteen metallization subsystems. The metallization systems are the ironcopper metallization related to the volcanic-sedimentary-metamorphic process in Proterozoic era, the magmatic hydrothermal metallization at the Jinning-Chengjiang stage, the sedimentary-reformed leadzinc polymetal metallization in the Upper Proterozoic-Lower Paleozoic era, the metallization Emei igneous province and the structure-magma-fluid metallization in Himalayan cycle. The paper also discusses the composition, texture and metallogenic regularity of the metallization systems.