山东平邑地区铜石金矿田控矿构造分析  

An Analysis on Ore-controlling Structure of Tongshi Gold Field in Pingyi Area,Shandong Province

作　　者：杜显彪 张瑞 朱宁 张英梅 DU Xianbiao;ZHANG Rui;ZHU Ning;ZHANG Yingmei(Shandong Lunan Geological Engineering Survey Institute, Second Geological Brigade of Shandong Geological Exploration Bureau,Jining 272100, Shandong,China)

机构地区：[1]山东省鲁南地质工程勘察院,山东省地勘局第二地质大队,山东济宁272100

出　　处：《西北地质》2022年第1期179-189,共11页Northwestern Geology

基　　金：山东省地勘局自然科学基金“山东省平邑地区金矿成矿规律及深部成矿预测研究”(KY2011-4)。

摘　　要：山东平邑地区是鲁西重要的金矿产地,20世纪80年代末在该区发现了鲁西唯一的大型金矿——归来庄金矿。该矿床赋存于近东西向的F1构造蚀变带中,为一经历多期次活动的构造隐爆角砾岩型金矿床。该金矿自发现以来,不少科研机构对其进行了一系列专题研究,提出了不同的控矿见解。笔者对以往的控矿研究分析后,对该地区金成矿主要控矿因素进行了重新梳理,提出了中生代浅成侵入岩体和碳酸盐岩、断裂构造“三位一体”控矿特征;建立了共轭X剪切断裂控矿为特征的新的成矿模式。本次研究在控矿构造方面取得突破性进展,发现金矿体主要赋存于共轭X形断裂中,共轭断裂的交汇部位和由共轭断裂形成的追踪张破碎带是最有利的成矿部位。Eastern Pingyi area is an important gold producing region in western Shandong Province.In the late 1980s,the only large-scale gold deposit,Guilaizhuang gold deposit,was discovered in this area.The deposit occurs in the nearly EW trending F1 structural alteration zone,and is a structural cryptoexplosive breccia type of gold deposit which has experienced multiple periods of activities.A series of monographic studies have been carried out and different opinions on ore control have been proposed ever since.Based on the previous studies,this paper reorganized the main ore controlling factors of gold mineralization in this area and put forward the Trinity ore controlling characteristics of Mesozoic hypabyssal intrusive rock,carbonate rock and fault structure,thus established a new metallogenic model characterized by conjugate x-shear fault.This study made a breakthrough in ore controlling structure,and found that gold ore bodies mainly occur in conjugate X-shaped faults.The intersection of conjugate faults and the tracing tensile fracture zone of conjugate faults were the most favorable metallogenic sites.

关 键 词：铜石金矿田 共轭剪切断裂 控矿构造 成矿模式 

分 类 号：P618.51[天文地球—矿床学] P612[天文地球—地质学]