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试论盐湖盆地的盐岩沉积特征
ON THE DEPOSITIONAL CHARACTERISTICS OF SALTROCK IN A SALTLAKE BASIN
【摘要】 本文从地表水的补给和蒸发的平衡条件来讨论盐湖盆地的盐岩横向沉积特征。盐湖水的补给多属于内流河的非匀称补给,淡水、咸水和卤水等三种水体共存于同一湖中,在特定的构造地质条件下,各自按其不同沉积阶段进行横向沉积。根据分析和实例认为,盐岩主要沉积在淡水补给三角洲相对的彼岸浅湖相内,形成扇状盐岩沉积带。
【Abstract】 This artical dicusses the feature of crosswise sedimentation of salt in a salt-lake basin.The supply of surface water and balance condition of water vaporization are emphasized.In most cases the supply of the water in the salt-lake is non-systematical by internal streams.Fresh water,brine and sa- line water coexist in the one lake. Due to the specific conditions of structural geology,each of them migrats to form cross sectional sediments according to various vertical sedimention pe- riod.According to an analysis and exauples cited,saltrock mainly deposits in the shallow lake facies on the opposite bank of a delta and forms the sectorial sediment bank.
- 【文献出处】 石油勘探与开发 ,Petroleum Expoloration and Development , 编辑部邮箱 ,1990年04期
- 【被引频次】7
- 【下载频次】152