glacial trough
a large u-shaped valley formed from a v-shaped valley by glacial erosion.
Image
![https://nsidc.org/sites/default/files/cryosphere/glossary/glacial_trough.jpg glacial_trough.jpg](/sites/default/files/styles/large/public/2020-12/glacial_trough.jpg.webp?itok=0aqWwqzO)
Western Brook glacial trough, Newfoundland, Canada. The sheer walls of this glacial trough soar up to 700 m high, and the glacial basin is 500 m deep in places.
Natural Resources Canada, copyright Terrain Sciences Division, Geological Survey of Canada
Topic(s):
glaciers