北祁连多拉隆哇金矿床地质特征及矿床成因

摘要

为了研究北祁连多拉隆哇金矿床成因,在论述了成矿地质背景、矿区地质特征、矿体特征、矿石特征、围岩蚀变特征等的基础之上,通过对矿床形成过程的分析,认为加里东期陆内碰撞造山活动叠加,沿达坂山深大断裂带分支断裂旁侧形成一系列的北西向、北东向的次级断裂和破碎带,后期随着中酸性岩浆侵入活动,使成矿物质活化、迁移、富集、沉淀,形成了多拉隆哇破碎带蚀变岩型金矿床.矿床成因确立用于指导地质勘查与找矿.%We have studied the genesis of the North Cillendo,including Metallogenic geological background,geological characteristics,orebody characteristics and ore characteristics.On the basis of the alteration characteristics of the surrounding rock,wehave made an analysis of the formation process of the deposit.It is considered that the intracontinental collision orogenic activities in the Caledonian period are superimposed.Along the branch faults of Dabansan in deep fault belt,it is found to form a series of secondary faults and broken belts in north-west and north-east.Activation,migration and enrichment of the ore-forming minerals are all precipitated to form a type of altered rock gold deposit in the fractured zone of Dora.The genesis of the deposit are used to guide geological prospecting and prospecting.