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地质学报  2001 

山西河东煤田保德矿区太原组砂体特征及与煤聚集的关系

, PP. 562-569

Keywords: 河流环境聚煤作用太原组府谷-保德矿区河东煤田山西桥头砂岩体

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Abstract:

本文对我国河东煤田府谷-保德矿区太原组(C2)下段的骨架砂体(桥头砂岩)的几何形态、垂直层序类型、岩石学和矿物学特点、概率曲线特征、沉积构造类型及其组合特点、古水流特征进行了细致的观察与分析,结合该骨架砂体对下伏m13厚煤层的冲刷样式,对其沉积环境和发育期的盆地独特的同沉积期的古构造背景进行了判断。识别了该砂体与上覆的m11煤层之间存在的空间展布关系,指出了该砂体对m11煤层聚集的独特控制方式。研究结果表明,该套砂体属于一种特殊过渡类型的河流环境的产物。

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