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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.
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Word History and Origins
Origin of mechanical weathering1
First recorded in 1880–85
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Example Sentences
Apart from the mechanical weathering of the rocks as a result of the arid climate, wherein rapid and often extreme changes of temperature take place, causing the surface of the rocks to flake or scale off, there has doubtless been unusual chemical weathering, and this has been largely brought about by the element of iron that all these rocks possess.
From Project Gutenberg
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