Glossary:Physical Weathering

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Physical Weathering
The breakdown of rock and mineral particles into smaller particles by physical forces such as frost action and abrasion. The smallest grain size that can be produces soley by physical weathering is silt; clay particles are not formed by physical weathering.

Related Words: Weathering, Silt, Clay

Source
Soil Science Society of America. Glossary of Soil Science Terms. Available online here, last accessed 28.09.2006.

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