文献类型：期刊文献

中文题名：黔北务正道地区早二叠世铝土矿沉积古地理及其控矿意义

英文题名：Sedimentary palaeogeography and its mineralization significance of the Early Permian bauxite in Wuchuan-Zheng'an-Daozhen area,northern Guizhou Province

作者：崔滔 焦养泉 杜远生 汪小妹 雷志远 翁申富 金中国

第一作者：崔滔

机构：[1]贵州理工学院资源与环境工程学院;[2]中国地质大学(武汉)资源学院;[3]中国地质大学(武汉)生物地质与环境地质国家重点实验室;[4]贵州省地质矿产勘查开发局;[5]贵州省有色金属和核工业地质勘查局

第一机构：贵州理工学院资源与环境工程学院

年份：2014

卷号：16

期号：1

起止页码：9-18

中文期刊名：古地理学报

外文期刊名：Journal of Palaeogeography

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：贵州省地勘基金"贵州务正道铝土矿基础地质与成矿规律研究"项目资助

语种：中文

中文关键词：早二叠世;铝土矿;古地理;控矿意义;务正道地区;贵州省

外文关键词：Early Permian, bauxite, palaeogeography, mineralization significance, Wuchuan-Zheng＇an-Daozhen area, Guizhou Province

摘要：通过野外地质调查、手标本观察、底板地层分布和矿体—含矿层厚度分析,对黔北务正道(务川—正安—道真)地区铝土矿沉积古地理及其与铝土矿成矿之间的关系进行了研究。结果表明:(1)铝土矿沉积盆地北以武隆为界,西北至南川,东至沿河,南至绥阳—凤冈一线;(2)研究区古地貌具南高北低的特点,沉积相带可分为海湾中心和滨岸湿地两部分,优质的铝土矿区均位于滨岸湿地;(3)沉积古地理决定了含矿层的厚度,但并不直接控制高品位铝土矿的形成,只有在其余成矿条件都适合的情况下,古地理通过控制铝土矿的沉积环境间接控制高品位铝土矿的形成。
Based on field geology, hand specimens, distribution characteristics of underlying strata, and thickness of orebody and ore beds, we conducted a comprehensive analysis on the palaeogeographyand its relationship with the mineralization process of bauxite in Wuchuan-Zheng＇an-Daozhen area, north- ern Guizhou Province. The results showed that- （ 1 ） The sedimentary basin of bauxite is bounded by Wu- long area on the north, by Nanchuan area on the northwest, by Yanhe area on the east, and by Suiyang- Fenggang area on the south; （2） The south part of the basin had a higher ancient landform than the north, and the sedimentary environment of bauxite was composed by partly closed bay and shoreland glade, and the good-quality bauxite was almost in the shoreland glade; （3） Sedimentary palaeogeography controlled the thickness of ore beds but not directly controlled the forming of high-grade bauxite. Sedimen- tary palaeogeography indirectly controlled the forming of high-grade bauxite by controlling sedimentary en- vironment of bauxite when other factors were beneficial.