A lot vs. Alot: 9 Grammatical Pitfalls
|glacial valley |
A steep-sided, U-shaped valley formed by the erosional forces of a moving glacier.
stream valley that has been glaciated, usually to a typical catenary, or U-shaped, cross section. U-shaped valleys occur in many parts of the world and are characteristic features of mountain glaciation. These glacial troughs may be several thousand feet deep and tens of miles long.