...冻结在冰块内或落在冰面上的岩块随冰川的运动而被搬运 被冰川搬运的物质和由冰川地质作用堆积下来的物质统称冰碛(glacial drift) 冰碛物的分选性和磨圆度均很差。 漂砾(erratic boulder):直径大于1m的冰川搬运物 冰碛物的特征: ①分选性差 ②成分与冰川发育地...
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... drift mobility 漂移迁移率 ; 漂移率 ; 迁移率 ; 漂移速率 glacial drift 冰渍 ; 冰碛 ; 冰河冲击层 ; 冰碛物 wind drift 风偏流 ; 飞砂 ; 风生流 ; 吹流 ...
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The uranium deposits are obscured by sand, peat and glacial drift.
铀矿床被砂子,泥炭和冰碛物所覆盖。
One of a series of short scars made by glacial DRIFT on a surface of bedrock.
冰川漂流物在基岩表面留下的一系列短痕之一。
As geologists mapped glacial deposits in the late nineteenth century, they became aware that there were several layers of drift, the lower ones corresponding to earlier ice ages.
19世纪晚期,在地质学家对这些冰川沉积进行定位的时候,他们意识到有好几个漂流层,位置较低的对应的是更早的冰川期。
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