mechanical weathering

mechanical weathering

noun Geology.
any of the various weathering processes that cause physical disintegration of exposed rock without any change in the chemical composition of the rock: Collision between rock surfaces can cause mechanical weathering.
Also called physical weathering.
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Main Entry:  mechanical weathering
Part of Speech:  n
Definition:  the erosion or breakdown of rock into smaller fragments by natural physical agents with no chemicals involved; also called disintegration
Example:  Agents of mechanical weathering are frost, tree roots, etc.
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