地质通报2017，Vol.36Issue(10)：1830-1840,11.
中国北方中新生代盆地深部砂岩铀矿成矿条件与找矿方向
Metallogenic condition and prospecting orientation for deep sandstone-hosted uranium deposits in Mesozoic-Cenozoic basins of North China
摘要
Abstract
The exploration of sandstone-hosted uranium deposits has only been focused on the basin margins with the depth less than 700m because of restrictions of mining technology, cost and metallogenic theory. The prospecting potentiality of deep uranium deposits in basins has always been ignored. In this study, favorable sedimentary structure, tectonic movement, geological fluid and re-duction condition of deep sandstone-hosted uranium deposits were discussed based on the summary of tectonic settings and urani-um-bearing strata of known shallow sandstone-hosted uranium deposits in Mesozoic-Cenozoic basins in North China and new find-ings from the exploration of deep sandstone-hosted uranium deposits in recent years. Meanwhile, prospecting potentiality of deep sandstone-hosted uranium deposits was assessed and two directions were preferentially pointed out:( 1) at the margin slope of the ba-sin, the"red and black"strata series should be preferentially targeted in search for the potential deep deposits whose formation condi-tions are similar to the conditions of the shallow deposits;(2) at the center of the basin, emphasis should be put on the red layer withpositive structure and sand body developed areas in the deep buried basin. These suggestions have been proved to be effective in the uranium investigation in Songliao basin.关键词
砂岩型铀矿/深部找矿/成矿条件/找矿方向/中新生代/陆相盆地Key words
sandstone-hosted uranium deposit/deep prospecting/metallogenic condition/prospecting direction/Mesozoic-Cenozo-ic basin/terrestrial basin分类
天文与地球科学引用本文复制引用
苗培森,李建国,汤超,金若时,程银行,赵龙,肖鹏,魏佳林..中国北方中新生代盆地深部砂岩铀矿成矿条件与找矿方向[J].地质通报,2017,36(10):1830-1840,11.基金项目
国家重点基础研究发展计划(973计划)《中国北方巨型砂岩铀成矿带陆相盆地沉积环境与大规模成矿作用》(编号:2015CB453000)和中国地质调查局项目《油气田勘查区砂岩型铀矿调查与勘查示范》(编号:DD20160128) （973计划）
