EESA06H3 Chapter Notes - Chapter 16: Truncated Spur, Valley, Rock Flour
Document Summary
The covering of a large region of a continent by a sheet of glacial ice. A large, long-lasting mass of ice, formed on land by the compaction and re-crystallization of snow, which moves because of its own weight. At times in the past, colder climates prevailed during which significantly more of the land surface of the earth was glaciated than at present. A glacier covering a relatively small area of land but not restricted to a valley. A glacier covering a large area (more than 50,000 square kilometers) of area. The ice flows from a higher to a lower elevation. The loss of glacial ice or snow by melting, evaporation, or breaking off into icebergs; also called wastage. Glacier with a positive budget, so that accumulation results in the lower edges being pushed outward and downward. A glacier with a negative budget, which causes the glacier to grow smaller as its edges melt back.
