华北地质2025，Vol.48Issue(4)：74-86,13.DOI:10.19948/j.12-1471/P.2025.04.07
松辽盆地北部中央坳陷区砂岩型铀矿地质条件分析及找矿方向
Geological condition analysis and prospecting direction of sandstone-type uranium deposits in the central depression of the northern Songliao Basin
摘要
Abstract
[Objective]In recent years,phased progress has been made in the exploration of sandstone-type uranium deposits in the northern Songliao Basin.However,the overall exploration level remains low,the direction of prospecting is unclear.It is urgent to identify the metallogenic conditions,understand the controlling factors of uranium deposits in the context of oil and gas,establish a metallogenic model,and clarify the direction of prospecting.[Methods]Based on uranium exploration achievements in the northern Songliao Basin,as well as oil and gas drilling,logging,seismic,and testing data from oilfields,this study comprehensively analyzes ore-forming geological conditions such as uranium sources,tectonics,sedimentation,and hydrocarbons,along with the interrelationships between these factors and uranium mineralization.By integrating previous uranium exploration results and theoretical insights,the dominant controlling factors and ore-forming models for the central depression in the northern Songliao Basin are summarized,followed by an assessment of its ore-forming potential and prospecting directions.[Results]The central depression in the northern Songliao Basin possesses excellent metallogenic geological conditions,including uranium sources,tectonic features,sedimentation,and oil and gas reduction processes.Surrounding this area are three granite erosion areas rich in uranium sources,namely the Greater Khingan Range,the Lesser Khingan Range,and the Zhangguangcai Range.The skylight formed by inversion structures,controls the location of mineralization.The bottom of the Sifangtai Formation hosts a 9m to 24m-thick ore-bearing sand body,and the dissipation of oil and gas provides a reducing environment and favorable conditions for ore preservation.[Conclusions]The central depression of northern Songliao Basin is a key exploration area for sandstone uranium in the future,with good exploration prospects.With increased exploration investment and technological breakthroughs,it is highly likely to become an important resource and production base for sandstone uranium deposits.关键词
松辽盆地北部/中央坳陷区/砂岩型铀矿/地质条件/成矿模式/找矿方向Key words
Northern Songliao Basin/central depression area/sandstone-type uranium deposit/geological conditions/metallogenic model/prospecting direction分类
天文与地球科学引用本文复制引用
聂志阳,谷社峰,郭长琪,周爱红,郭军辉,王金奎..松辽盆地北部中央坳陷区砂岩型铀矿地质条件分析及找矿方向[J].华北地质,2025,48(4):74-86,13.基金项目
中国石油青年科技专项"流体在铀成矿过程中的作用研究"(2024DQ03169) （2024DQ03169）
大庆油田有限责任公司科技专题"铀矿富集规律研究及资源潜力分析"(202521KT001) China Petroleum Youth Science and Technology Special Project(2024DQ03169) （202521KT001）
Daqing Oilfield Co.,Ltd.Science and Technology Project(202521KT001) （202521KT001）
