文档介绍：摘要II 四川省宁南银厂沟-骑骡沟铅锌矿床构造控矿作用研究作者简介:杨红英,女,1982年03月生,师从成都理工大学钟康惠教授,2009年05月毕业于成都理工大学构造地质学专业,获得理学硕士学位。摘要四川省宁南县银厂沟-骑骡沟铅锌矿床,区域上位于扬子地块西南缘康滇地轴东侧的川滇黔铅锌多金属成矿带上,为川滇黔重要构造金属成矿带,受到前人的高度重视。本文在充分收集前人的资料和研究成果上,从构造地质基础入手,分别从区域构造演化、构造变形特征、矿床基本特征、构造控矿特征、矿体年代学特征等几个方面,分析区域构造及矿田构造对矿带及矿体的控制作用,得出以下结论:,宁南地区经历了元古代EW向拗拉槽和震旦纪-早古生代SN向陆架裂陷、晚二叠世-中新生代SN向大陆裂谷等发展阶段。显生宙的SN向裂谷(陷)叠加在EW向拗拉槽裂陷之上,具有横跨式叠加裂谷系的特征。宁南地区就处在EW向和SN向裂谷构造叠加的部位。:元古代会理-东川EW向坳拉槽形成川滇黔地区的基底构造,控制川滇黔地区的铅锌矿带的分布;震旦纪-早古生代SN向陆架裂陷形成了该区有利成矿的容矿屏蔽岩性组合;晚二叠世-中新生代SN向大陆裂谷阶段深部地幔物质伴随岩石圈伸展裂陷而上涌至表壳;新生代岩石圈收缩挤压,使裂谷封闭褶皱,集于表壳的矿液,在适宜的构造(如背斜皱褶、转折端、张性断裂等)和具有屏蔽-容矿岩石组合的地层组成的储闭系统中成矿。-骑骡沟铅锌矿区基本地质构造格架为:近南北向的骑骡沟背斜,次级的横向和纵向小幅褶皱;北北西、南北、北北东向纵向断裂,东西向的横向断裂以及早晚两期顺层剪切构造。;受纵向断裂控制;在走向和倾向上均具尖灭再现与侧列再现特点;成矿年代学研究表明有三期成矿作用,主要形成于晚燕山期以来的脆性变形期;矿床属于热液矿床。:骑骡沟背斜形成伴随早期顺层剪切→NNW向断裂形成并逆冲、纵向小幅褶皱形成,SN向断裂形成→NNW向断裂左行正滑、SN断裂左行逆冲,横向小幅褶皱形成→NNW向断裂右行逆冲、近SN向小断裂右行正滑→NE向、NW向断成都理工大学硕士学位论文III 裂及EW向断裂形成,后期顺层剪切。-骑骡沟铅锌矿床的构造控矿特征:小江断裂为导矿构造,次级南北向张性断裂为配矿构造,北北西向、近南北向断裂及早期顺层剪切破碎带、横向和纵向小背斜为容矿构造,广泛发育的上震旦统灯影组白云岩为容矿地层。关键词:银厂沟-骑骡沟;铅锌矿;构造控矿;热液蚀变;构造演化Abstract IV Study on the Ore-Controlling Structures in Yinchanggou-Qiluogou Pb-Zn deposit, Ninnan, Sichuan Author introduction: Yang Hongying, female, born March 1982, whose tutor was Professor Zhong kanghui . He graduated from Chengdu University of Technology in structural geology and tectonics and was granted the Master Degree in June , 2009. Abstract Yinchanggou-qiluogou Pb-Zn ore deposits in Ningnan County, Sichuan Province, which are located in Sichuan-Yunnan-Guizhou Pb-Zn polymetallic metallogenic belt in east of Kangdian earth axis in southwest of Yangtze block, are an important structurally Sichuan-Yunnan-Guizhou metallogenic belt, and thus have been capturing numerous geologists’ extensive attention. Based on sufficient former researches and data, starting with foundational structure geology, analyses about how structure is controlling Pb-Zn deposits is involved in this paper fr