Cirque - Wikipedia, the free encyclopedia
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A cirque (French for "circus") is an amphitheatre-like valley, or valley head, formed at the head of a glacier by erosion. A cirque also is known as a coombe or coomb in England, a combe or c...
en.wikipedia.org/wiki/Cirque
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Glaciers knock off and drag very hard boulders and gravels on their path to melting. The contact points between the entrapped rocks and the surrounding bedrock act like a giant piece of sandpaper, either scratching grooves in, or smoothing ...
http://wiki.answers.com/Q/What_is_Glacial_Abrasion
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Home » Geology Dictionary - G » Glacial Abrasion ... Definition : The process by which a glacier erodes the underlying bedrock through contact between the bedrock and rock fragments embedded in the base of the glacier. See also glacial quarrying.
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www.alcwin.org/Dictionary_Of_Geology_Description-74-G.h...
www.alcwin.org/Dictionary_Of_Geology_Description-74-G.htm
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The first step in glacial erosion is rock failure. Rock failure can occur as the growth of pre-existing cracks or the formation of new cracks. Cracks form at weaknesses ... The other significant erosional process is abrasion. Plucked debris in basal ice (pic. ... Fig.2 A representative model of glacial abrasion.
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gemini.oscs.montana.edu/~geol445/hyperglac/eroproc1/
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These images will show examples of glacial abrasion and quarrying, and the resulting landforms. Some related images are in Subglacial Processes. ... Collection of glacial clasts, Beardmore Glacier, Antarctica...
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tvl1.geo.uc.edu/ice/image/eropro/Lect4img/Lect4img.html
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glacial abrasion; The process by which clasts embedded in the base of a glacier grind away at the substrate as the glacier flows. ... glacially polished surface; A polished rock surface created by the glacial abrasion of the underlying substrate.
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www.wwnorton.com/earth/egeo/glossary/g.htm
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glacial abrasion ( ¦glāshəl ə′brāzhən ) ( geology ) Alteration of portions of the earth's surface as a result of glacial ... Sci-Tech Dictionary: glacial abrasion...
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www.answers.com/topic/glacial-abrasion
www.answers.com/topic/glacial-abrasion
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rock flour n. Finely ground rock particles produced by glacial abrasion. Also called glacier meal . ... Silt- and clay-sized particles of debris formed from grinding due to abrasion within and at the base of a glacier. Streams arising from areas of glacial abrasion have a grey-green colour as rock flour is carried within them,
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www.answers.com/topic/rock-flour
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www.homeworkcheck.ca/Science%20Material/img7.html
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