Pyramidal peak

A pyramidal peak , also sometimes called glacial horn , is a mountainous top which was transformed under the action of the Glace during a glacial era.

Formation

The fields of ice, at the end of the Glacier S form U-shaped valleys between two mountains, or of the basins called circus S. They form on both sides walls known under the name of Arête S. the fact that at least three edges meet allows the formation of a peak. A peak has one summon pointed and of the sloping walls on at least three slopes.

A glacial horn is the extreme illustration, with practically vertical walls on each slopes. In the the Alps, " Horn" is used to indicate peaks with very strong slopes ranging between 45 and 60° (e.g. the Kitzbühel er Horn).

Examples

the Matterhorn with Zermatt, at the border enters the Suisse and the Italy,
the Kitzsteinhorn close to Kaprun to Salzburg, Austria,
Mont Blanc with the top of Chamonix, in the the Alps (France),
Mount Wilbur in the National park of Glacier, Montana, the United States,
Reynolds Mountain, National park of Glacier, the United States
the Grand Nipple, Wyoming, the United States.

References

{{in}} Illustrated Glossary off Alpine Icy Landforms
{{in}} The Geography pyramidal Site Edges and peaks

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