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U-shaped valley

British  

noun

  1. geology a steep-sided valley caused by glacial erosion

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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Today, that canyon is the location of many erosional landforms including the U-shaped valley, as well as polished and striated rock surfaces.

From Textbooks • Jan. 1, 2017

The key feature of alpine glacial erosion is the U-shaped valley.

From Textbooks • Jan. 1, 2015

At that time, the large U-shaped valley in the lower right was occupied by glacial ice, and all of the other glaciers shown here were longer and much thicker than they are now.

From Textbooks • Jan. 1, 2015

Figure 16.20 A depiction of a U-shaped valley occupied by a large glacier.

From Textbooks • Jan. 1, 2015

Thus the U-shaped valley is finally converted into a valley with a flat bottom, the flat being due in large part to erosion, and in smaller part to deposition.

From The Geography of the Region about Devils Lake and the Dalles of the Wisconsin by Atwood, Wallace W.