The physical disintegration of rock into smaller fragments without changing its chemical composition, driven by freeze-thaw cycling, thermal expansion and contraction, salt crystal growth, and the pressure release of exhumed rock. It is the dominant weathering mode in cold and arid climates where chemical reactions proceed slowly.
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Source Pinnacle (geology) (Wikipedia)
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1. Weathering (Wikipedia)
Wikipedia infobox 'Lead section' = 'Weathering is the deterioration of rocks, soils and minerals (as w...' on 'Weathering'View the Source 2. Weathering (Wikipedia)
WikipediaWikipedia: Weathering, Physical weathering sectionQuote, Wikipedia: Weathering, Physical weathering section
Physical weathering, also called mechanical weathering or disaggregation, is the class of processes that causes the disintegration of rocks without chemical change.
Freeze-Thaw Weathering (Wikipedia)
Pinnacle (geology) (Wikipedia)
Shaped: Pinnacle, Lead and geology textQuote, Shaped: Pinnacle, Lead and geology text
Its shape is the result of mechanical weathering and the attitude of the rock, or the subsidence of the
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