黔北德江地区中二叠世早期梁山组铝土矿含矿岩系特征及成矿规律  

Characteristics of ore-bearing rock series and metallogenic regularity of bauxite of Liangshan Formation in Middle Permian Dejiang area,northern Guizhou Province

作　　者：康桂川 何政伟[1] 汤建 伍晓艺 KANG GuiChuan;HE ZhengWei;TANG Jian;WU XiaoYi(College of Earth Sciences,Chengdu University of Technology,Chengdu 610081,Sichuan,China;Hubei Urban Construction Design Institute Co.,LTD,Wuhan 430000,Hubei,China)

机构地区：[1]成都理工大学地球科学学院,四川成都610081 [2]湖北省城建设计院股份有限公司,湖北武汉430000

出　　处：《矿床地质》2020年第5期893-904,共12页Mineral Deposits

基　　金：中国地质调查局二级项目“武陵山成矿带酉阳-天柱地区地质矿产调查(121201010000150011-08)”资助。

摘　　要：通过对黔北德江地区梁山组铝土矿野外地质特征、岩石地球化学特征、沉积特征进行研究,探讨了本区铝土矿含矿岩系沉积特征、沉积环境及成矿规律,预测铝土矿找矿靶区。研究表明,黔北德江地区铝土矿矿体赋存于沙沟向斜与红坳向斜两翼及核部的梁山组中,其形成的沉积环境为沼泽化瀉湖相,成矿物质来源可能为下志留统秀山组泥质砂岩。德江—沿河一带满足铝土矿成矿的相关条件,具有良好的成矿潜力,为新的铝土矿找矿靶区。文章在野外工作基础上总结的成矿规律和成矿模式,为今后的找矿工作提供了理论指导。By studying the field geological characteristics,rock geochemical characteristics and sedimentary characteristics of the Liangshan Formation bauxite in Dejiang area,northern Guizhou Province,this paper discusses the sedimentary characteristics,sedimentary environment and metallogenic regularity of the Liangshan Formation in Dejiang area,and predicts the ore-prospecting direction of bauxite.The results show that all the bauxite orebodies in Dejiang area occur in Liangshan Formation in the flanks and core of Shagou syncline and Hong’ao syncline,and the sedimentary environment of bauxite seems to have been bog lagoon facies,with the mineral origin being probably argillaceous sandstone of Xiushan Formation of the lower Silurian.Dejiang-Yanhe area can meet the relevant conditions of bauxite mineralization,has good mineralization potential,and is a new prospecting target area for bauxite.The metallogenic regularity and metallogenic model summarized in the field provide theoretical guidance for future prospecting.

关 键 词：地质学 铝土矿 梁山组 含矿岩系特征 成矿规律 德江地区 

分 类 号：P618.45[天文地球—矿床学]