【作者】 于学峰；

【导师】 韩作振；

【作者基本信息】 山东科技大学 ， 矿产普查与勘探， 2010， 博士

【摘要】 本文系统研究了归来庄矿田地质背景与成矿地质条件、不同类型金矿特征及其成生联系,探讨潜火山热液成矿作用与矿床成因,总结控矿因素与成矿规律；利用已有地质资料,开展了成矿预测,指出了找矿方向。铜石杂岩体为一燕山早期形成的富钾碱性潜火山杂岩体,岩浆活动为金成矿提供了充足的热源和热液。NNW向、NW向及近EW向主干构造是主要的控岩和控矿构造,潜火山穹隆构造及伴生环状、放射状构造,控制着矿体的展布。泰山岩群山草峪组是本区的主要矿源层。寒武纪朱砂洞组上灰岩段是镁质碳酸盐岩微细浸染型金矿的有利含矿层位；寒武系上部—奥陶系下部的碳酸盐岩是隐爆侵入角砾岩型金矿的有利围岩。归来庄矿田内金矿属于鲁西中生代侵入岩有关的金、铜、(铁)成矿系列,根据各类矿床的控矿地质条件、成矿方式及矿化特点,可分为5种矿床类型：隐爆角砾岩型、镁质碳酸盐岩微细浸染型、斑岩型、夕卡岩叠加型及破碎带蚀变岩型。归来庄金矿是鲁西迄今唯一大型金矿床：卓家庄金矿是国内外罕见的含硒碲矿物的富金矿。矿田内各类型金矿属与碱性潜火山岩浆期后浅成低温热液有关的石英-萤石-冰长石-绢云母型富碲金矿。金矿形成温度主要集中在120℃～250℃之间,属于浅成低温热液矿床。成矿深度处在1500m左右。成矿物质主要来源于泰山岩群地层：成矿流体具多来源性,以岩浆水和大气降水为主,并有少量变质水的参与。矿床的形成时代大约在175～161Ma之间的中侏罗世,属燕山早期。开展了1：5万综合信息金矿成矿预测,共优选出A类靶区7个,B类靶区分3个。认为本区具有良好的成矿前景和较大的找矿潜力。更多还原

【Abstract】 In this paper, geological background, metallogenic geological conditions, characteristics and formation relationship of different types of gold deposits in Guilaizhuang ore field were studied, hydrothermal mineralization and origin of subvolcanos were studied, and ore-controlling factors and mineralization rule were summarized. By using already known geological information, metallogenic prediction was carried out, which will point out the prospecting direction.Tongshi complex was potassium-rich alkaline subvolcanic complex formed in early Yanshan period. Magmatic activity provided sufficient heat and hydrothermal for gold mineralization. Major structures with the trend of NNW, NW and EW were main ore controlling structures.subvolcanic dome, and associated ring and radial structures controlled the distribution of the ore bodies. Shancaoyu formation of Tai’shan group was the main source of ore in this area. The upper section of limestone in Cambrian Zhushadong formation was favorable strata for forming magnesium carbonate micro-disseminated gold deposit. Carbonate rocks in upper Cambrian-lower Ordovician were favorable country rocks of crypto-explosive breccia type gold deposits.Guilaizhuang gold ore field was a gold, copper (iron) ore-forming series which had close relation with Mesozoic intrusive rocks in western Shandong. According to geological conditions of ore-controlling, mineralization types and mineralization characteristics of various types of deposit, deposits can be divided into 5 types:crypto-explosive breccia type, magnesium carbonate micro-disseminated type, porphyry type, skarn superimposed type and fragmental altered type. Guilaizhuang gold deposit is the only large scale gold deposit in western Shandong by so far, while Zhuojiazhuang gold deposit was a rare selenium tellurium-rich gold mine in the world. Gold deposits in this area were quartz-fluorite-adularia-sericite-rich tellurium gold deposit associated with shallow epithermal in alkali subvolcanic magma. Forming temperature of gold deposits was mainly in 120℃～250℃, which belongs to low temperature epithermal deposits. Mineralization depth was about 1500m. Forming materials are mainly from Taishan group, and ore-forming fluid has the characteristics of multiple sources. They are mainly composed of magmatic water and meteoric water, accompanied with a small amount of metamorphic water. The forming period of this deposit was about 175～161Ma in middle Jurassic in early Yanshan period.On the basis of carrying out comprehensive gold deposit prediction information with the scale of 1:50000,7 target areas with A class and 3 target areas with B class target areas were chose. It is regarded that there has good prospecting and great exploration potentiality in this area.更多还原