青海省大灶火沟—黑刺沟金及多金属矿矿床地质特征及成因  

A Study on Geological Characteristics and Genesis of Dazaohuagou-Heicigou Gold and Polymetallic Ore Deposits in Qinghai

作　　者：赵伟 路隆炜 ZHAO Wei;LU Longwei(Qinghai Geological Survey Bureau, Xining, Qinghai 810000, China;The First Geological Exploration Institute of Qinghai Province, Haidong, Qinghai 810600, China)

机构地区：[1]青海省地质调查局,青海西宁810000 [2]青海省第一地质勘查院,青海海东810600

出　　处：《中国锰业》2020年第3期20-23,共4页China Manganese Industry

基　　金：青海省海西州“两权价款”基金项目(HX2012LQKC0105)。

摘　　要：青海省大灶火沟—黑刺沟金及多金属矿位于东昆仑南坡晚、中元古代—早中古生代缝合带间的俯冲杂岩带内,主要含矿地层为二叠系中统马尔争组(P1-2m),矿体分布受区内构造影响明显,主要呈带状分布。研究认为该矿床是以次级构造带为容矿地段的中低温热液构造蚀变岩型金矿床,其区内主断裂作为气水热液的运输通道,不含矿或含矿性极差。Dajaohuagou-Heicigou gold and polymetallic ore deposits are located in the subducted complex belt between the late Paleozoic-early and middle Paleozoic suture zones in the south slope of East Kunlun Mountains.The main ore-bearing strata are the Middle Permian Marzhen Formation(P1-2m).The ore bodies are mainly distributed in belts under the obvious influence of the structure in the area.It is considered that the deposit is a middle and low temperature hydrothermal tectonic altered rock type gold deposit with secondary structural belt as the ore bearing area.The main fault in the deposit is used as the gas hydrothermal transport channel without ore bearing or extremely poor ore bearing property.

关 键 词：地质特征 金矿 矿床成因 昆中断裂 

分 类 号：P618.2[天文地球—矿床学]