铀矿地质2013，Vol.29Issue(3)：139-145,178,8.DOI:10.3969/j.issn.1000-0658.2013.03.003
东胜地区直罗组铀储层非均质性特征及其与铀成矿的关系
Heterogeneity of Uranium Host Rocks in Zhiluo Formation in Dongsheng Area and Its Relation to Uranium Mineralization
摘要
Abstract
Numbers of uranium deposits have be found in Dongsheng area.The major ore-bearing layer is the sub member of the lower member of the Zhiluo Formation,the heterogeneity of host rocks plays an important role during the process of uranium mineralization.This paper sorted and statisticated the data of sand body and the imperpeable bed in Dongsheng area to study the heterogeneity characteristic of host rock and its relationship to uranium mineralization in horizontal and vertical directions.The thickness of sand body in Dongsheng area decreases gradually from northwest to southeast.The uranium mineralization is mainly distributed in the place where the thickness of sand body changed from the thick to the thin.Statistics shew that the best uranium mineralization occurred in sand body thickness between 20m to 40m and the sand rate over 60％ in the eastern part of Dongsheng area.And the best uranium mineralization in the western part occurred in area of sand body thickness between 60m to 70m and the sand rate over 70 ％.In vertical direction,the numbers and the thickness of the impermeable beds have negative relation to sand rate.Moreover,uranium deposits generally exist in the area of less number impermeable bed and small thickness.The uranium mineralization grade decreased with the increase of number and thickness of the impermeable beds.关键词
铀储层非均质性/直罗组/东胜地区/鄂尔多斯盆地Key words
heterogeneity of host rock/ Zhiluo formation/ Dongsheng area/ Ordos basin分类
天文与地球科学引用本文复制引用
易超,郑云龙,王明太..东胜地区直罗组铀储层非均质性特征及其与铀成矿的关系[J].铀矿地质,2013,29(3):139-145,178,8.基金项目
国家高技术研究发展计划(863计划)项目(2012AA061801)和中国核工业集团公司重点科技专项(地ZD162-4)共同资助. （863计划）
