| 松辽盆地北部依安凹陷四方台组砂体特征及铀成矿潜力分析 |
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| 引用本文： | 侯晓光,罗敏,卢胜军,运威旭.松辽盆地北部依安凹陷四方台组砂体特征及铀成矿潜力分析[J].地质与资源,2021,30(6):675-682. |
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| 作者姓名： | 侯晓光 罗敏 卢胜军 运威旭 |
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| 作者单位： | 核工业240研究所,辽宁沈阳110000 |
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| 基金项目： | 中国核工业地质局项目"黑龙江省北安地区铀矿资源调查评价"（201833-1，202024-2）. |
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| 摘 要： | 根据钻探施工及取样分析结果，总结了松辽盆地北部依安凹陷内上白垩统四方台组沉积相、砂体发育及后生蚀变特征.依安凹陷内四方台组可分为上下两段，其中四方台组上段主要发育辫状河相沉积，下段主要为曲流河相沉积.辫状河相一般发育1~2层砂体，砂体规模较大，局部后生氧化作用发育.通过对依安凹陷四方台组铀源、构造、砂体发育及后生改造特征分析，认为其具有较好的砂岩型铀成矿所需的铀源条件、构造条件、砂体条件及后生氧化改造条件，铀矿找矿潜力较大.
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| 关 键 词： | 四方台组 沉积微相 沉积演化 砂岩型铀矿 松辽盆地 |
| 收稿时间： | 2020-12-08 |
CHARACTERISTICS OF SAND BODY AND URANIUM MOTALLOGENIC POTENTIAL IN SIFANGTAI FORMATION OF YI'AN SAG,NORTHERN SONGLIAO BASIN |
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| HOU Xiao-guang,LUO Min,LU Sheng-jun,YUN Wei-xu.CHARACTERISTICS OF SAND BODY AND URANIUM MOTALLOGENIC POTENTIAL IN SIFANGTAI FORMATION OF YI'AN SAG,NORTHERN SONGLIAO BASIN[J].Geology and Resources,2021,30(6):675-682. |
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| Authors: | HOU Xiao-guang LUO Min LU Sheng-jun YUN Wei-xu |
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| Institution: | No. 240 Institute of CNNC, Shenyang 110000, China |
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| Abstract: | Based on the results of drilling and sampling analysis, the paper summarizes the characteristics of sedimentary facies, sand body development and epigenetic alteration of Upper Cretaceous Sifangtai Formation in Yi'an sag, northern Songliao Basin. The Sifangtai Formation can be divided into upper and lower members, with developed braided river facies sediments and meandering river facies sediments respectively. There are usually 1-2 layers of sand body developed in braided river facies, large in scale, with epigenetic oxidation locally. Through the analysis of uranium source, structure, sand body development and epigenetic transformation characteristics, it is considered that Sifangtai Formation has good conditions necessary for sandstone-type uranium mineralization, with great uranium prospecting potential. |
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| Keywords: | Sifangtai Formation sedimentary microfacies sedimentary evolution sandstone-type uranium deposit Songliao Basin |
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