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Characteristics of sand bodies in Zalailuoer depression and analysis of uranium exploration direction
Author(s): 
Pages: 73-79
Year: Issue:  2
Journal: URANIUM GEOLOGY

Keyword:  扎赉诺尔坳陷砂体特征铀成矿找矿方向;
Abstract: 扎赉诺尔坳陷带内诸凹陷具有不同的沉积特征和砂体特点,查干诺尔和克鲁伦凹陷砂体形成于粗粒冲积扇和扇三角洲沉积体系,砂体厚度变化大,相变快,有机质含量低,顶底板均不发育;呼伦湖凹陷以小型三角洲平原相砂体为主,具有较稳定的泥砂岩结构,有机质含量高,砂体厚度和横向延伸较稳定,但砂体铀含量较低;胡列也吐凹陷砂体以辫状河三角洲体系产出为主,砂体厚度大,延伸稳定,底板发育,顶板发育不完全,砂体铀含量高.扎赉诺尔坳陷带各凹陷砂体的不同特点,决定了它们具有不同的找矿潜力.通过砂体综合条件对比分析,笔者认为胡列也吐凹陷和克鲁伦凹陷砂体铀成矿条件较好,呼伦湖凹陷次之,查干诺尔凹陷较差.
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