世界核地质科学2026，Vol.43Issue(3)：463-472,10.DOI:10.3969/j.issn.1672-0636.2026.03.004
松辽盆地北部头台地区四方台组地层划分对比及成矿条件分析
Stratigraphic division and analysis of metallogenic conditions of Sifangtai formation in Toutai area of northern Songliao basin
摘要
Abstract
In recent years,significant progress has been made in the exploration of sandstone-type uranium deposits in northern Songliao basin,with industrial-grade ore bodies successfully discovered in the Upper Cretaceous Sifangtai formation across the Central Sag and Western Slope.This discovery has brought new requirements for the stratigraphic division and lateral correlation of the Sifangtai formation.However,stratigraphic research in this area is currently seldom reported.Based on the exploration results of uranium deposits in northern Songliao Basin and oil and gas drilling,logging,seismic and other data from oil fields,this study systematically summarized the marker layers and key sequence boundaries of the Sifangtai formation,and determined a unified isochronous stratigraphic framework which can divided Sifangtai formation into three sections,and three positive cycles based on lithological and electrical characteristics,corresponding to three fourth-order cycles.On the basis of stratigraphic division and comparison,radioactive anomaly characteristics were compared based on well logging curves and core features,and it was clarified that the Sifangtai formation is the main ore bearing layer,and the bottom sand body is the host of uranium ores.The lower sandstone body of Sifangtai formation exhibits substantial thickness and stable distribution,providing favorable migration pathways and reservoir space for mineralizing fluids.Rich in mud and organic matter,the sandstone body serves as a reducing medium and adsorbent,creating favorable geological conditions for uranium mineralization and promising exploration prospects.This achievement not only provides critical stratigraphic evidence for Sifangtai formation but also offers robust theoretical support for the metallogenic prediction of sandstone-type uranium deposits in northern Songliao basin.关键词
松辽盆地北部/砂岩型铀矿/四方台组/地层对比/成矿条件Key words
northern Songliao basin/sandstone-type uranium deposits/Sifangtai formation/stratigraphic correlation/prospecting conditions分类
天文与地球科学引用本文复制引用
聂志阳,谷社峰,周爱红..松辽盆地北部头台地区四方台组地层划分对比及成矿条件分析[J].世界核地质科学,2026,43(3):463-472,10.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"(编号:No.2024DQ03169)和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"(编号:No.202521KT001)联合资助 Support jointly by China Petroleum Youth Science and Technology Special Project"Research on the Role of Fluids in Uranium Ore-forming Processes"(No.2024DQ03169),Daqing Oilfield Co.,Ltd.Science and Technology Project"Study on Uranium Ore Enrichment Mechanisms and Resource Potential Analysis"(No.202521KT001) （编号:No.2024DQ03169）
