地质与勘探2024，Vol.60Issue(6)：1105-1115,11.DOI:10.12134/j.dzykt.2024.06.002
三塘湖盆地汉水泉凹陷新近系砂岩型铀矿成矿条件及找矿方向
Metallogenic Conditions and Prospecting Direction of the Neogene Sandstone-Type Uranium Deposit in the Hanshuiquan Depression of the Santanghu Basin
摘要
Abstract
The Santanghu Basin is located in the southeast of the Junggar tectonic belt,and is an important coal-producing and oil-gas basin in northern China.Previous well logging data of coal field has identified abundant radioactive anomalies in the Mesozoic and Cenozoic of the Hanshuiquan area north of the basin,which provides an important clue for sandstone-type uranium prospecting.In order to better understand the metallogenic potential of sandstone-type uranium deposit in the area,this study conducted drilling verification in the central radioactive anomaly area of the Hanshuiquan area,identified uranium storage layers and mineralization,and further analyzed the mineralization potential and prospecting direction in the Hanshuiquan area.Results show that the uranium mineralization and anomalies in the Hanshuiquan area of the Santanghu Basin are mainly distributed in gray and yellow fine sandstones at the bottom of the middle Changjihe Group and gray fine sandstones at the top of the upper Xishanyao Formation.The uranium anomalies have a wide distribution,but the thickness of the uranium storage sandbody is thin and the uranium grade is low.The Changjihe Group in the Hanshuiquan area possesses favorable sedimentary formation and a complete supply-runoff-discharge system,with good epigenetic alteration and uranium mineralization,and a good prospecting potential.The relative scarcity of uranium sources and insufficient content of reducing agents in erosion source area are unfavorable for uranium mineralization.The area near the central fault zone and its north side in the anomaly area of the Hanshuiquan depression can be considered as key areas for subsequent mineral exploration.关键词
砂岩型铀矿/成矿条件/找矿方向/新近系/汉水泉凹陷/三塘湖盆地Key words
sandstone-type uranium deposit/metallogenic condition/prospecting direction/Neogene/Hanshuiquan Depression/Santanghu Basin分类
天文与地球科学引用本文复制引用
刘珉,周军,周玉,朱永胜,邢建磊,孟李奇,赵建邦,陈林,朱彦虎,杨泽东..三塘湖盆地汉水泉凹陷新近系砂岩型铀矿成矿条件及找矿方向[J].地质与勘探,2024,60(6):1105-1115,11.基金项目
新疆维吾尔自治区自然科学基金青年基金项目(编号:2023D01B19)、中国地质调查局项目(编号:DD20211550)和中国地质调查局项目(编号:DD20242295)联合资助. （编号:2023D01B19）
