内蒙额尔古纳在矿带中生代火山岩浆活动与金属成矿的关系

在岩石学和微量元素地球化学研究的基础上，通过对不同类型矿床的成矿岩体及围岩条件的分析，探讨了中生代火山岩浆活动与金属成矿的关系。认为晚侏罗世火山岩浆活动为成矿提供了有利的围岩的构造空间；早白垩世岩浆活动提供了成矿岩体及热力学条件，该期次火山岩浆的侵入并作用于不同的围岩、形成了由斑岩型Ｃｕ、Ｍｏ矿，浅成熟液型Ａｇ、Ｐｂ、Ｚｎ矿等组成的一系列矿床组合。

Relationship between Mesozoic Volcano-magmatic Activity and Metallization in the Erguna Metallogenic Belt, Inner Mongolia

Based on petrological and trace element geochemical studies as well as an analysis of oreforming rock bodies and wall rocks for different types of ore deposits, the present paper has probed into the relationship between Mesozoic volcano-magmatic activity and metallization. It is held that Late Jurassic volcano-magmatic activity provided favorable wall rock and structural space for the ore-forming process, and that Early Cretaceous magmatic activity supplied ore-forming rock bodies as well as thermodynamic conditions. The subvolcano-magmatic intrusion of the latter period played the major role and reacted with different wall rocks, forming a series of ore deposit associations composed of porphyry copper and molybdenum deposits andepithermal silver, lead and zinc deposits.