文档介绍：硕士学位论文摘要摘要熊耳山是河南省著名的金银矿集区,是中、新生代伸展构造背景下形成的变质核杂岩。区域出露地层主要为太古界太华群、中元古界熊耳群。由于受板块边界深断裂和秦岭褶皱带长期活动影响,构造形态复杂,断裂与褶皱均较发育,构造线方向近东西向。近东西向断裂与北北东向断裂交汇部位常控制燕山期中酸性小侵入体分布。区内岩浆岩广泛发育,岩浆作用贯穿本区整个地质演化历史,尤其是燕山期岩浆活动对区内金矿成矿有着密切的成因联系。在熊耳山地区,内生金矿床以爆破角砾岩型和构造蚀变岩型为主,且二者在产出空间上,相互共生,从而形成多型一体的产出特征。在系统收集前人对该区的研究成果及综合研究的基础上,通过野外调查研究、岩矿鉴定及包裹体测温和成分分析等方法手段,结合典型金矿床的解剖,总结了熊耳山地区金矿床主要类型、控矿因素及成矿规律。通过对前人资料的分析研究,认为区内金矿成矿条件优越, 金的成矿与燕山期花岗岩浆活动有着密切的成因联系,岩浆活动为成矿提供了有利的成矿空间和热动力条件,同时提供了部分成矿物质。同位素及稀土元素研究表明,成矿物质来源具多源化;流体包裹体研究表明,成矿流体既非典型的岩浆热液,亦并非完全为热卤水, 而是介于二者之间,到成矿晚期,有大量大气降水的混入。流体的混入,是金沉淀成矿的因素之一。应用地质和物化探相结合的方法进行了成矿预测研究,优选找矿靶区三处,即河南省嵩县祁雨沟外围金矿区、公峪金矿区、栗子沟一上庄金矿区等为进一步找矿提供了依据。关键词:金矿、成矿条件,成矿规律,成矿预测、熊耳山、祁雨沟硕士学位论文 ABSTRACT Xiong’er Montain,a well—known Au—Ag depositassembling area in Henan Province,posed plex formed by extensional faultsin themesozoic—cenozoic strata inthe area ismainly Archean rocksofTaihuagroup andMesoproterozoic rocks ofXionger by thelong—term movement ofdeep faultsof plateboundary andthefold beltofQinling,the structuraltypes ’S more,faults andfolds are welldeveloped andthe directionof tectoniclineisnearlyEW-,the place where thenearlyEW-trending faultsintersecttheN-NW-trending faultscontrols the distributionofsmallintermediate—acid intrusive body during the Yanshanian developed magmatic rocksin theregion make magmatism run through the whole geological especially,magmatic activitiesduring Yanshanian period play acritical elerating thegold mineralization. Inthe area ofXiong’erMontain,the endogenic gold deposit is dominated by explosive ia—hostrocks and ’S more,they are mutual symbiosis inoutput space and consequently form an output characteristicsthatmultiple lithology of ore exists in all orebody. Based on theprevious plishment inthis area and relied on fieldsurvey,rock-mineral identification,temperature ofmineral fluid inclusions—test,analysis of position ofrocks and bination withanalysis oftypicalgold