Glacier:move,ero,dep
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| till | unsorted material deposited by glacier (large)
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| stratified drift | Sediments deposited by glacial meltwater that are sorted and layered (small)
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| glacial erratics | piece of rock that differs from the size and type of rock native to the area in which it rests.
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| glacier | dense ice sheet that slides down a slope due to gravity
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| alpine glacier | glacier that started in a bowl shaped mountain cavity (cirque) and flows into a valley
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| piedmont glacier | a valley glacier that slides down into a plain
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| icecap | covering of ice over a large area
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| plastic flow | movement within the ice; beneath zone of accumulation and zone of wastage and zone of fracture
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| zone of fracture | Upper 30 - 60 meters ; brittle behavior; the ice breaks rather than undergoing gradual permanent distortion and flow
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| zone of accumulation | where snow and ice form; snow accumulates faster than it melts; above equilibrium line; front
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| zone of wastage | below equilibrium line; ice and snow melt faster than the accumulate; toe
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| crevasse | zone of fracture; caused by tension when when moving over irregular terrain; cracks in ice
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| ablation | loss of snow at lower end of glacier (zone of wastage)
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| calving | large pieced of ice break off of front of glacier; creates ice bergs
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| ice berg | floating pieces of ice
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| firn | stage between snow and permanent ice
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| glacial retreat | glacier shrinks
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| glacial advance | glacier grows
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| equilibrium line | where the amount of new snow gained by accusation is equal to the amount of snow lost by abrasion; moves up in the summer and down in the winter
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| plucking | meltwater penetrated the cracks and joints along the rock floor of the glacier and freezes; erosion and transportation of large chunks of rock
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| abrasion | ice and load of rock fragment slide over bedrock, and smooth, crape, and polish the bedrock; erosion that occurs when the particles scrape against each other
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| glacial striations | scrapping of glacier; formed by abrasion
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| u-shaped valley | also known as glacial trough
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| trough | glacier widen, deepen, and straighten valley,
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| hanging valley | after ice has redeemed, valleys of smaller tributary glaciers are left standing above the main glacial trough
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| cirque | bowl-shaped depression
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| arete | sharpe-edged ridges; line of sharp pyramid like peaks
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| horn | pyramid like peak that projects above surrounding
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| fjord | steep sided inlets of sea; a long, narrow, deep inlet of the sea between high cliffs
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| glacial flour | rock in a powdery form caused by glacial erosion; the bottom go the glacier rubs across the bedrock layer, eroding the softer material
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| tarns | mountain lake or pool formed in a cirque excavated by a glacier
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| paternoster lakes | one of a series of glacial lakes connected by a single stream or a braided stream system of cirques
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| morain | glacially formed accumulation of unconsolidated glacial debris (soil and rock)
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| terminal or end morain | farthest advance of glacier(moraine)
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| lateral morain | along the side (moraine)
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| medial morain | (moraine) 2 valley glaciers intersect to form one ice stream
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| esker | remain of river that ran underneath a glacier; winding ridge of stratified sand and grave
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| kettles | large piece of ice breaks off a glacier as it moves; leaves depression such as lake
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| drumlin | elongated hill in shape of egg; formed from glacier moving over till
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