地质与勘探2017，Vol.53Issue(2)：237-246,10.
贵州威宁-赫章二叠系乐平统含铁、铝岩系沉积环境及成矿元素富集特征分析
Sedimentary Environments and Mineral Element Concentration Features of Iron-Aluminum-Bearing Rock Series in the Leping Series of Permian of the Weining-Hezhang Area, Guizhou
摘要
Abstract
In the Weining-Hezhang area of Guizhou,the iron-aluminum rock series in the Leping series of the Permian System are the product of weathering and sedimentation of basalt in the Emeishan.Of them,the content of REE is related with the structural setting and paleogeographic location of basalt in the Emeishan.The content of Cu,Ti,Sc and REE are high in the Liupanshui rift through,corresponding to the complex geologic environment there.Southwest of the boundary of the rift trough,basalt has experienced strong erosion,and the thickness of the deposited layer is relatively thin,and the Nb,Ta and REE are enriched in the intensely weathering environment.The content of Ga and V is high in the northeast of the rift through where the weathering is weak and the sedimentary thickness is big,which are concentrated in the sedimentary environment.Weathering is an important factor for the useful elements concentration,and weathering decides the concentration tendency of REE and rare elements.Some elements can be enriched to achieve industrial values,in particular,Nb + Ta may form an independent deposit.There are some elements which can be enriched to reach the value of industrial use,in particular,Nb + Ta,may form an independent deposit.关键词
二叠系/铁、铝岩系/沉积环境/元素富集/威宁-赫章Key words
Permian/iron-aluminum series/sedimentary environment/element concentration/Weining-Hezhang分类
天文与地球科学引用本文复制引用
陈国勇,范玉梅,孟昌忠,张海,李再勇..贵州威宁-赫章二叠系乐平统含铁、铝岩系沉积环境及成矿元素富集特征分析[J].地质与勘探,2017,53(2):237-246,10.基金项目
贵州省地质矿产勘查开发局重大科研项目(贵州省重点地区“三稀”矿产分布及找矿靶区初步研究、黔西北地区铅锌找矿攻关):编号黔地矿发(2011)17号和黔地矿纪要(2015)14号资助. （贵州省重点地区“三稀”矿产分布及找矿靶区初步研究、黔西北地区铅锌找矿攻关）
