滇东南薄竹山花岗岩体北部接触带构造成矿地质条件分析

发布时间：2018-01-25 00:28

本文关键词： 接触带构造矿床地质特征成矿地质条件矽卡岩薄竹山花岗岩滇东南　出处：《昆明理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：研究区位于华南褶皱系滇东南褶皱带文山-富宁褶皱束薄竹山穹窿北部。本文基于前人在该区大量的地质、矿床研究,依托《滇东南薄竹山地区钨铅锌银多金属矿整装勘查》项目,对薄竹山北部矿床地质研究相对较薄弱区进行接触带成矿地质特征研究。主要研究岩体侵入接触带构造特征、接触带成矿作用机理和矿化空间分布规律,对薄竹山矽卡岩型矿床接触带的成矿地质条件、接触带构造对矿体控制,为该区寻找相关矿产资源提供重要资料和依据。本文依据该区基础地质、物化探异常、地质钻探和探槽工程等地质工作,将区内接触带构造按形态划分为平直型接触带、港湾状型接触带、顺层灌入型接触带、断裂带型接触带和树枝状型接触带构造,并将接触带构造划分为内接触带、中接触带和外接触带。依据接触带构造成矿及界面成矿理论,研究接触带类型、形态、构造与矿化和矿化富集之间的相互关系,并分析研究矿床成因及成矿过程。本文从地层、构造、岩浆岩、接触带构造形态、接触带构造类型等多方面探讨了成矿控矿因素,研究接触带构造成矿地质条件。依据该区成矿物质来源、控矿因素、成矿过程、成矿规律及矿床成因,区内矿床主要产于接触带构造的矽卡岩中,矿体产出由岩体向外形成有高温到低温岩浆热液成矿特征,矿化富集有Sn、W、Fe、Cu逐渐过渡的空间分布规律。建立了接触带构造矽卡岩型矿床成矿模型。
[Abstract]:The study area is located in the northern part of Wenshan-Funing fold bundle thin bamboo mountain dome in the south China fold system southeast Yunnan fold belt. This paper is based on a large number of geological deposits in this area. Relying on the project of integrated exploration of tungsten, lead, zinc and silver polymetallic deposits in Bozhushan area, southeastern Yunnan. The ore-forming geological characteristics of contact zone are studied in the relatively weak geological area of the northern part of Bozhushan ore deposit. The structural characteristics of intrusive contact zone, the metallogenic mechanism of contact zone and the spatial distribution of mineralization are mainly studied. For the metallogenic geological conditions of the contact zone of the skarn type deposit in Baozhushan, the contact zone structure controls the orebody, which provides important data and basis for the exploration of related mineral resources in this area. This paper bases on the basic geology, geophysical and geochemical anomalies in this area. In geological work such as geological drilling and grooving engineering, the structure of contact zone in this area is divided into flat contact zone, harbor contact zone and bedding irrigation contact zone according to the shape. The contact zone structure is divided into inner contact zone, middle contact zone and outer contact zone. According to the metallogenic and interfacial metallogenic theory of contact zone, the contact zone type is studied. The relationship between morphology, structure, mineralization and mineralization enrichment, and the analysis of the genesis and metallogenic process of the deposit. This paper deals with the structural morphology of strata, tectonics, magmatic rocks and contact zones. The ore-controlling factors of the contact zone are discussed from many aspects, and the geological conditions of the ore-forming structure in the contact zone are studied. According to the source of the ore-forming material, the ore-controlling factors, the metallogenic process, the metallogenic law and the genesis of the deposit in this area. The ore deposits in this area mainly occur in skarn of contact zone structure. The orebody is formed outward from the rock mass and has the characteristics of high temperature and low temperature magmatic hydrothermal mineralization. A metallogenic model of skarn type deposits in contact zone is established.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P612

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