青海省拉脊山地区某铜矿成因浅析

A Brief Talk on Genesis for a Cu Deposit in the Laji Mountains,Qinghai

青海省拉脊山地区某铜矿处于祁连加里东褶皱系拉脊山优地槽褶皱带中段,北拉脊山深大断裂夹持地带。矿区地层为上寒武统六道沟群下部火山岩组玄武岩段(∈3ld1b)。F4断裂构造破碎带为铜矿富集场所。文章论述了铜矿点地质特征、矿体特征及矿石类型,最后归结出该矿体成因类型属于构造破碎带低温热液型铜矿。

A Cu deposit in the Laji Mountains,Qinghai lies in the middle section of the Lajishan folded belt of the Qilian Caledonian fold system.The ore district consists of basalt Member of the Lower Volcanic Formation of the Upper Cambrian Liudaogou Group（∈3ld1^b）.Cu ore shoot is confined to the rupture zone of fault F4.This paper deals with geological features,ore type of the Cu ore occurrence.The ore is epithermal one in tectonic rupture zone.