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10 Cards in this Set
- Front
- Back
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Alpine (valley) glacier
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Alpine (valley) glaciers flow downhill from where the snow and ice accumulates through mountains along existing valleys.
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Continental glacier
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Continental glaciers are large ice sheets that cover relatively flat ground. These glaciers flow outward from where the greatest amounts of snow and ice accumulate.
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Bergschrund
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The large crevasse at the top of an alpine glacier where ice that is moving is separated from ice that is stuck to the mountain above is called a bergshrund.
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Crevasse
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Because the ice is moving, glaciers have crevasses, where cracks form in the ice as a result of movement.
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Glacier
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Large sheet of flowing ice. |
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Zone of ablation
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Than is melted from lower down in the glacier, in the zone of ablation.
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Zone of accumulation
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Glaciers grow when more snow falls near the top of the glacier, in the zone of accumulation.
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Erratic
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An erratic is a boulder transported and deposited by a glacier having a lithology different than the bedrock upon which it is sitting.
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Horn
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A hornresults when glaciers erode three or more arêtes, usually forming a sharp-edged peak.
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Moraine
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An accumulation of boulders, stones, or other debris carried and deposited by a glacier.
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