CANYON
Canyon
A canyon or gorge is a deep ravine between pairs of escarpments or cliffs and is most often carved from the landscape by the erosive activity of a river over geologic timescales. Rivers have a natural tendency to cut through underlying surfaces so will eventually wear away rock layers to lessen their own pitch slowing their waters; given enough time, their bottoms will gradually reach a baseline elevation—which is the same elevation as the body of water it will eventually drain into. This action, when the river source and mouth are at much different base elevations will form a canyon, particularly through regions where softer rock layers are ...The above text is a snippet from Wikipedia: Canyon
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canyon
Noun
- A valley, especially a long, narrow, steep valley, cut in rock by a river.
The above text is a snippet from Wiktionary: canyon
and as such is available under the Creative Commons Attribution/Share-Alike License.