摘要
锰是湖南的优势矿种之一,当前国内锰矿供应紧张的形势下,研究湖南省境内沉积型锰矿地质特征及成矿规律,对推动沉积型锰矿的找矿勘查具有一定意义。介绍了湖南省沉积型锰矿床的基本地质特征、矿石同位素特征等,综合分析了湖南省境内沉积型锰矿的成矿控制因素,结合近年潜力评价提供的锰元素地球化学分布资料等,初步提出了统一的成矿模式。湖南沉积型锰矿床在时间上主要形成于前寒武纪、南华纪、奥陶纪、泥盆纪、二叠纪、侏罗纪-白垩纪共6个地质时代,最重要的赋矿地层是南华系、奥陶系、二叠系地层,在空间上集中分布在大陆边缘的沉积盆地中,地层岩相、构造、岩浆岩等共同决定了锰矿床的定位。
Manganese is one of the dominant minerals in Hunan.In the present situation of tense domestic manganese supply,it is of great significance to study the manganese geological characteristics and oreforming law to promote the manganese ore prospecting in the province.This paper introduces the basic geological characteristics and ore isotopic characteristics of the manganese deposits in Hunan and analyses the ore-controlling factors of the sedimentary manganese deposits.The paper proposes a preliminary unified metallurenic model based on the recent manganese element geochemical distribution in Hunan provided by potentianl evaluation.Temperarily,Hunan sedimentary manganese deposits were mainly formed in Precambrian,Nanhuaian,Ordovician,Devonian,Permian,Jurassic and Cretaceous,with the most important ore formed in Nanhuaian,Ordovician and Permian strata.Spatially,the manganese deposits are mainly distributed in sedimentary basins on the continental margin,and the location of the manganese deposits is determined by stratigraphic lithofacies,structures and magmatite.
作者
付胜云
周超
安江华
Fu Shengyun Zhou Chao An Jianghua(Hunan Institute of Geological Survey, Changsha 410116, China)
出处
《地质科技情报》
CSCD
北大核心
2017年第4期145-152,173,共9页
Geological Science and Technology Information
基金
中国地质调查局项目"中国矿产地质与成矿规律综合集成和服务--湖南省矿产资源调查成果综合集成与服务产品开发"(DD20160346)
关键词
沉积型锰矿
地质特征
控矿条件
成矿模式
湖南
sedimentary manganese ore
geological characteristics
ore controlling condition
metallogenic model
Hunan
