地质与资源2019，Vol.28Issue(3)：254-259,6.
河南省偃龙铝土矿床晚石炭世古地理特征及其对铝土矿的控矿意义
LATE CARBONIFEROUS PALEOGEOGRAPHY OF THE YANLONG BAUXITE DEPOSIT IN HENAN PROVINCE: Ore-controlling Significance
摘要
Abstract
The Yanlong bauxite deposit is a recently discovered super﹣large bauxite deposit. By analysis and comparison of a large number of drill core data,it is considered that there existed three main types of sedimentary environment in the area,namely barrier island facies,shallow lake﹣lagoon facies,and tidal flat﹣swamp facies. In local barrier island environment,there is no sedimentary mineralization. It is easy to deposit and mineralize in the shallow lake﹣lagoon environment,in which the thickness of bauxite is moderately correlated with that of ore﹣bearing rock series. In the tidal flat﹣swamp environment,the conditions for sedimentary mineralization are poor. The paleogeographic characteristics of Yanlong area in Late Carboniferous determine the thickness of ore﹣bearing rock series,yet not directly control the mineralization thickness of bauxite. Instead, it indirectly controls the formation by affecting the sedimentary environment combined with other metallogenic conditions.关键词
铝土矿床/沉积古地理/控矿意义/偃龙/河南省Key words
bauxite deposit/sedimentary paleogeography/ore﹣controlling significance/Yanlong area/Henan Province分类
天文与地球科学引用本文复制引用
周云荣,李建全..河南省偃龙铝土矿床晚石炭世古地理特征及其对铝土矿的控矿意义[J].地质与资源,2019,28(3):254-259,6.基金项目
中央地勘基金河南省地质勘查基金项目(资)[项目编号:52(预查),8(普查)]. （资）
