Arete

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[[Image:Arete cirque horn.JPG|thumb|300px|'''[[Arete]]''' a steep-sided, sharp-edged bedrock ridge formed by two '''[[glaciers]]''' eroding away on opposite sides of the '''[[ridge]]'''.]] [[Image:Arete cirque horn.JPG|thumb|300px|'''[[Arete]]''' a steep-sided, sharp-edged bedrock ridge formed by two '''[[glaciers]]''' eroding away on opposite sides of the '''[[ridge]]'''.]]
-'''[[Arete]]''' a steep-sided, sharp-edged bedrock ridge formed by two '''[[glaciers]]''' eroding away on opposite sides of the ridge.+'''[[Arete]]''' a steep-sided, sharp-edged bedrock ridge formed by two '''[[glaciers]]''' eroding away on opposite sides of the '''[[ridge]]'''.
The arête is a thin '''[[ridge]]''' of '''[[rock]]''' that is left separating the two '''[[valleys]]'''. Arêtes can also form when two glacial '''[[cirques]]''' erode headwards towards one another, although frequently this results in a saddle-shaped pass, called a '''[[col]]'''. The arête is a thin '''[[ridge]]''' of '''[[rock]]''' that is left separating the two '''[[valleys]]'''. Arêtes can also form when two glacial '''[[cirques]]''' erode headwards towards one another, although frequently this results in a saddle-shaped pass, called a '''[[col]]'''.

Current revision

Arete a steep-sided, sharp-edged bedrock ridge formed by two glaciers eroding away on opposite sides of the ridge.
Arete a steep-sided, sharp-edged bedrock ridge formed by two glaciers eroding away on opposite sides of the ridge.

Arete a steep-sided, sharp-edged bedrock ridge formed by two glaciers eroding away on opposite sides of the ridge.

The arête is a thin ridge of rock that is left separating the two valleys. Arêtes can also form when two glacial cirques erode headwards towards one another, although frequently this results in a saddle-shaped pass, called a col.

The edge is then sharpened by freeze-thaw weathering. The word "arête" is actually French for fishbone; similar features in the Alps are described with the German equivalent term Grat or Kamm (comb).

Where three or more cirques meet, a pyramidal peak is created.

[edit] Also see


[edit] Reference

  1. Wikipedia Arete [1]



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