鄂西宁乡式铁矿地质特征及成矿作用、成矿模式总结  

Geological Characteristics,Metallogenesis and Metallogenic Model of Ningxiang-type Iron Deposit in Western Hubei

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)

机构地区：[1]湖北冶金地质研究所(中南冶金地质研究所),湖北宜昌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)。

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.

关 键 词：宁乡式铁矿 泥盆纪 成矿模式 鄂西 

分 类 号：P618[天文地球—矿床学]