重庆市城口县锰矿整装勘查区构造组合特征及控矿模式  

Structural Combination Characteristics and Ore-controlling Model of the Integrated Exploration Area of Manganese Deposit in Chengkou County,Chongqing City

作　　者：宁墨奂 陈龙 李建 韦轶 田孟 Ning Mohuan;Chen Long;Li Jian;Wei Yi;Tian Meng(Chongqing Institute of Geological Survey;205 Geological Team of Chongqing Geological and Mineral Exploration and Development Bureau)

机构地区：[1]重庆市地质调查院 [2]重庆市地质矿产勘查开发局205地质队

出　　处：《现代矿业》2018年第9期48-53,共6页Modern Mining

基　　金：重庆市国土资源和房屋管理局科研项目(编号:KJ-2017014)

摘　　要：城口锰矿整装勘查区受逆冲推覆和走滑运动影响,发育的大量断层和褶皱构造,均属成矿后期破矿构造。根据研究区内断层、褶皱的组合形式,划分为3个构造组合区,即:右行走滑逆冲叠瓦断层区、左行+右行走滑逆冲断层区和褶皱—断层区。结合研究区构造演化特征,分析认为区内矿体演化共经历了沉积期、褶皱弯曲期、断层破坏期和隆升改造期4个阶段。通过分析研究区内的构造组合特征,总结了构造控矿规律,对于指导锰矿勘查工作中钻孔定位工作,提高钻孔见矿率,实现找矿突破具有重要意义。Affected by thrust nappe and strike-slip movement in the integrated exploration area of manganese deposit in Chengkou County, a large number of faults and folds has been formed, all of them belong to the ore-breaking structures after metallogenic period. According to the structural forms of faults and folds in the study area, it can be divided into three zones of structural forms, which include the zone of right strike-slip faults and thrust faults, the zone of left strike-slip faults ,right strike-slip faults and thrust faults and the zone of folds and faults. Based on the characteristics of tectonic evolution in the study area, the evolution of the orebodies experienced four stages,which include the sedimentary stage,the fold ben- ding stage, the fault failure stage and the uplift transformation stage. By the analysis of the structural com- bination characteristics of the study area, the structural ore-controlling regularities of the study area is summarized, which is of great significance to guide the drilling location in manganese exploration work, improve the percentage of ore-occurrence and realize the breakthrough of prospecting in the study area.

关 键 词：锰矿 构造组合 控矿模式 构造演化 构造控矿规律 

分 类 号：P618.32[天文地球—矿床学]