铀矿地质Issue(5)：283-286,293,5.DOI:10.3969/j.issn.10000658.2014.05.005
酒东盆地红山地区下白垩统新民堡群灰白色蚀变带特征及其与铀成矿的关系
Feature of Off white Alteration Zone and Its Relation to Uranium Mineralization in Lower Cretaceous Xinminpu Group in Hongshan Area,Jiudong Basin
摘要
Abstract
The study area is located in Hongshan area,northeast of Jiudong basin.Base on the research of epigenetic alteration in the Lower Cretaceous Xinminpu group,it was believed that the strong hydrol-ysis and weak off white oxidation is the component of phreatic interlayer oxidation zone.Iron and organic matter are commonly occurred pigment in sedimentary rock,when groundwater containing oxygen infil-trated into the rock,they can oxidize and bleach the pigment in sandstone,mean while the hydrolysis of feldspar produce light color dominated clunch minerals such as Kaolinite.Whitening and depigmentation are the important reason of off white alteration in sandstone.The off white zone is located between strong oxidation mauve yellow sub zone and original gray zone.The off white zone is in close rela-tion with uranium mineralization and can be used as a sign for uranium exploration in Lower Cretaceous sandstone type uranium deposits in this area.关键词
后生氧化改造/灰白色蚀变带/砂岩型铀矿Key words
subsequent oxidation transformation/off white zone/sandstone type uranium deposits分类
天文与地球科学引用本文复制引用
郭长林,耿海军,何大鹏,李万华,陈云杰,李斌..酒东盆地红山地区下白垩统新民堡群灰白色蚀变带特征及其与铀成矿的关系[J].铀矿地质,2014,(5):283-286,293,5.基金项目
中国地质调查局全国铀矿资源调查评价项目“甘肃省潮水盆地西部酒泉盆地及其周缘铀矿远景调查”(编号:1212011220783)。 （编号:1212011220783）
