摘要
宁乡式铁矿是一种泥盆纪海相沉积赤铁矿,是中国铁矿的重要类型之一,占中国沉积铁矿探明资源储量的50%以上,其中鄂西宜昌、恩施地区是最重要的宁乡式铁矿产出地。通过总结概述其成矿区域地质背景、含矿地层及含矿岩系特征,分析其沉积盆地的空间配置、盆地类型,探讨成矿作用,建立鄂西宁乡式铁矿的成矿模式。成矿作用详细分为沉积期成矿作用、成岩期成矿作用和后期改造作用三个阶段。成矿模式可以总结为成矿准备、晚泥盆世早期成矿、晚泥盆世晚期成矿和成矿后改造四个过程。
Ningxiang-type iron deposit is a kind of Devonian marine sedimentary hematite,which is one of the important types of iron ore in China.Yichang and Enshi in Western Hubei are the most important producing areas of Ningxiang-type iron deposit.Through research,the geological background,ore-bearing strata and ore-bearing rock series of the metallogenic region are summarized,the spatial distribution and type of the sedimentary basin are analyzed,the metallogenic process is discussed,and the metallogenic model of Ningxiang-type iron deposit is established.Metallogenesis can be divided into three stages:sedimentary metallogenesis,diagenetic metallogenesis and late metagenesis.The metallogenic model can be summarized as four processes:metallogenic preparation,early Late Devonian metallogenic,late Late Devonian metallogenic and post-metallogenic metagenesis.
作者
万传辉
王莎莎
刘林
斯小华
刘云勇
Wan Chuanhui;Wang Shasha;Liu Ling;Si Xiaohua;Liu Yunyong(Hubei Institute of Metallurgical Geology (Central South Institute of Metallurgical Geology),Yichang,Hubei 443003)
出处
《资源环境与工程》
2020年第S02期45-51,共7页
Resources Environment & Engineering
基金
湖北省国土资源厅地质勘查基金项目“湖北恩施—宜昌地区高磷赤铁矿整装勘查”(编号2012〔12〕号)。
关键词
宁乡式铁矿
泥盆纪
成矿模式
鄂西
Ningxiang-type iron deposit
Devonian
mineralization model
Western Hubei
