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outwash |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.02 sec. |
outwashDeposit of sand and gravel carried by running water from the melting ice of a glacier and laid down in stratified deposits. An outwash may be as much as 330 ft (100 m) thick at the edge of a glacier, and it may extend for many miles. Outwashes are the largest glacial deposits and provide a considerable source of windblown material. outwash [′au̇t‚wäsh] (geology) Sand and gravel transported away from a glacier by streams of meltwater and either deposited as a floodplain along a preexisting valley bottom or broadcast over a preexisting plain in a form similar to an alluvial fan. Also known as glacial outwash; outwash drift; overwash. Soil material washed down a hillside by rainwater and deposited on more gently sloping land. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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An understanding of the multiple advances and withdrawals of the glaciers and the formation of outwash deposits is a useful introduction to a site and permits the foundation engineer to understand the general geologic characteristics of the area. 7) are sited on deep, sandy, glaciofluvial parent materials including kettled outwash deposits. The Koetje tract is part of a 1,100-acre corridor linking state and federal land in the Newaygo Outwash Plain, a 125-mile-long swath pitted by glacial debris deposited by melt waters 10,000 years ago. |
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