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Glaciers.docx

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Department
Geography
Course
Geography 1100
Professor
D.Kim Holland
Semester
Fall

Description
Glaciers - Causes erosion and deposition - Glaciers form where annual snowfall exceed annual snow melt o Weight of the snow causes it to compact and form ice, once it become around 100m thick, it beings to move slowly - Definition:Alarge body of ice moving slowly down a slope or spreading outward on a land surface - Permafrost:Apermanently frozen layer of ground that can be as much as 1500m thick - Three theories on how glaciers formed o 1. Attributes glacier formation to cooling periods when volcanic dust lowered the temperature by blocking solar radiation o 2. Attributes ice age / glaciers to changes in the shape, tilt and seasonal positions of t
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