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23 Cards in this Set
- Front
- Back
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Continental Glaciers
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large ice sheets that cover relatively flat ground
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Alpine Glaciers
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flow downhill from where the snow and ice accumulates through mountains along existing valleys.
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Ice Caps
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large glaciers that cover a larger area than just a valley, possibly an entire mountain range or region.
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Zone of Accumulation
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Glaciers grow when more snow falls near the top of the glacier
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Zone of Ablation
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melted from lower down in the glacier
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Crevasses
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where cracks form in the ice as a result of movement.
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Bergshrund
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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
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Erratic
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a rock or boulder that differs from the surrounding rock and is believed to have been brought from a distance by glacial action.
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Horn
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A pyramidal peak, sometimes in its most extreme form called a glacial horn, is an angular, sharply pointed mountain peak which results from the cirque erosion due to multiple glaciers diverging from a central point.
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Moraine
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a mass of rocks and sediment carried down and deposited by a glacier, typically as ridges at its edges or extremity.
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Arete
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a sharp mountain ridge.
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Kettle
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is a shallow, sediment-filled body of water formed by retreating glaciers or draining floodwaters.
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Eccentricity
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deviation of a curve or orbit from circularity.
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Firn
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granular snow, especially on the upper part of a glacier, where it has not yet been compressed into ice.
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Till
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is unsorted glacial sediment. Till is derived from the erosion and entrainment of material by the moving ice of a glacier.
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Snowfield
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permanent wide expanse of snow in mountainous or polar regions.
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Ice Shelf
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a floating sheet of ice permanently attached to a landmass.
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Ice Pack
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pack of ice that sticks with other ice
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Cirque
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a bowl-shaped depression on the side of or near mountains.
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Milankovitch Theory
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an explanation of long term climate change.
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Glacial Lake
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a lake with origins in a melted glacier
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Esker
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a long, winding ridge of stratified sand and gravel, examples of which occur in glaciated and formerly glaciated regions of Europe and North America.
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Snowline
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The interplay of altitude and latitude affects the precise placement of the snow line at a particular location.
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