摘要
为了分析长城岭矿区构造控矿作用以指导矿产勘查工作,本文研究了区内成矿构造特征,进行了构造期次及应力分析,并利用R型聚类分析、因子分析等手段进行了构造地球化学研究.结果表明:区内的铅锌矿体、岩浆岩以及硅化体都受构造控制;矿区复杂的构造形迹由海西、印支、燕山等多期构造活动所致;燕山早期为成矿期,成矿作用与该期岩浆活动关系紧密;燕山早期形成的F_(101)断裂为区内主要的导矿、配矿构造,F_(102)和F_(103)断裂经历自海西期的多期构造活动,为主要的容矿构造,燕山晚期形成的F_(104)断裂为成矿期后构造,而于印支期形成的F_(201),和F_(202)断裂,于喜山期重新活动,成为区内主要破矿构造.
In order to reveal the role of major metallogenic structures within Changchengling ore district during ore -forming processes and thereby support future mineral prospecting, this paper surveys their characteristics, makes a tectonic - stage analysis and stress analysis, and then carries out tectonogeochemistry work mainly involved with R -Type cluster analysis and factor analysis. All these lead to the following conclusions ： （ 1 ） Lead - zinc ore bodies, magmatic rocks and silicified rock units within this area all are subject to the occurrence of major structures ; （2） The complex structural features have resulted from multiple stages of tectonic movement, Hercynian, Indosinian, Yanshanian and Himalayan; （3） Early Yanshanian is the metallogenic epoch, and metallogenesis is closely related to magma emplacement during this period, and （4） Fracture F101 formed during the early Yanshanian is the main ore - conducting and - distributing structure, while fractures F102and F103, which have experienced stages of tectonic activities since the Hercynian, are the major ore -hosting structures. And fracture F104 took form during Late Yanshanian after the metallogenic epoch. Fracture F201 and F202 formed in the Indosinian relives during Himalayan and takes the role as the ore -breaking structures.
出处
《矿业工程研究》
2015年第1期56-63,共8页
Mineral Engineering Research
基金
十一五"国家科技支撑计划资助项目(2009BAB43B05)
关键词
成矿构造
构造期次
应力分析
构造地球化学
R型聚类分析
因子分析
metallogenic structure
tectonic stage
stress analysis
tectonogeochemistry
R - Type clusteranalysis
factor analysis
