贵州晴隆锑矿“大厂层”热水沉积特征浅析  

Preliminary Study on Hydrothermal Sedimentary Characteristics of Dachang Antimony Deposit in Qinglong,Guizhou Province

作　　者：王福瑞 

机构地区：[1]贵州有色金属和核工业地质勘查局核资源地质调查院,贵州贵阳550005

出　　处：《资源环境与工程》2015年第4期422-426,共5页Resources Environment & Engineering

摘　　要：通过对晴隆锑矿"大厂层"的岩石学特征、地球化学特征及其产出背景分析,认为"大厂层"具有热水沉积特征;其底部茅口组生物礁灰岩与硅质蚀变岩组成的礁硅岩套是热水沉积的一个重要标志,而互层产出的硅质岩与石英岩(碧玉岩)组合是由热水间歇性供给形成,并将"大厂层"的热水沉积模式划分为:火山喷发前期、火山喷气期和沉积压实期三个阶段。Petrologic characteristics, geochemical characteristics and occurrence background of Dachang antimony deposit in Qinglong, Guizhou province reveal that ＂Dachang stratum＂ has hydrothermal sedimentation characteristics. Reef-silicon rock suit consisting of Maokou biological reef limestones and siliceous alteration rocks at the bottom of ＂Dachang stratum＂ is a typical hydrothermal attribute,in which the interstratified siliceous rocks and quartzite combination are formed by spasmodic hot water supply. The hydrothermal deposition mode for ＂Dachang stratum＂ therefore can be subdivided into three stages, namely the pre-volcanic-eruption stage, the volcanic jetting stage and the sedimentary compaction stage.

关 键 词：热水沉积 “大厂层” 晴隆锑矿 贵州 

分 类 号：P618.66[天文地球—矿床学] P588.21’1[天文地球—地质学]