glacial troughs

Why Do Glaciers Make U-shaped Valleys?

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Why Do Glaciers Make U-shaped Valleys? As glaciers flow through these valleys, they concentrate erosive action over the entire valley, widening its floor and over-steepening its walls. After the glacier retreats, it leaves behind a flat-bottomed, steep-walled U-shaped valley. What does a glacier do to the shape of a valley? It tears away huge rocks

Is A Glacial Trough Erosion Or Deposition?

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Is A Glacial Trough Erosion Or Deposition? Glacial erosion landforms – truncated spurs, glacial troughs, ribbon lakes and hanging valleys. As corrie glaciers leave their source regions and descend down old river valleys they can make huge changes to the landscape. … They are formed by a valley glacier that moves down the valley because