李伍式铜锌矿床矿源层及变质改造成矿作用

摘要

The Liwu Zn-Cu deposit is an important deposit with in west Sichuan. The deposit occurs in the core of the Jianglang domal metamorphic complex, Jiulong, Sichuan and is confined to volcano-sedimentary formation as source bed of the Middle Proterozoic Liwu Group. The metamorphic transformation mineralization took place in Indo-Chinese epoch. The deposit is submarine volcanic hydrothermal-metamorphic transformation one.%李伍式铜锌矿是四川西部一个重要的含锌富铜矿床类型。位于九龙江浪穹隆状变质核杂岩中心地区，含矿地层为中元古界李伍岩群—火山沉积岩建造，形成于中晚元古代扬子陆台边缘裂离带一分支裂谷带内。变质改造成矿是伴随印支—燕山期区域造山运动在穹隆成穹过程中李伍岩群经受挤压与伸展构造作用而变形变质，其中所含火山热液沉积的原始矿源层在变质改造作用下重新富集成矿，属海底火山热液—变质改造型矿床。