Chemical weathering

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Chemical weathering is the chemical decomposition of geological material (e.g., rocks, soil parent material) by a variety of chemical process like oxidation, hydrolysis, and carbonation.
Chemical weathering is the chemical decomposition of geological material (e.g., rocks, soil parent material) by a variety of chemical process like oxidation, hydrolysis, and carbonation.

Chemical weathering is the chemical decomposition of geological material (e.g., rocks, soil parent material) by a variety of chemical process like oxidation, hydrolysis, and carbonation. Chemical weathering alters the chemistry of the weathered material, whereas physical weathering does not.

These chemical processes need water, and occur more rapidly at higher temperature, so warm, damp climates are best. Chemical weathering (especially hydrolysis and oxidation) is the first stage in the production of soils.

There are different types of chemical weathering, the most important are:

Solution - removal of rock in solution by acidic rainwater. In particular, limestone is weathered by rainwater containing dissolved CO2, (this process is sometimes called carbonation).

  • Oxidation - the breakdown of rock by oxygen and water, often giving iron-rich rocks a rusty-coloured weathered surface.


[edit] Reference

  • Wikipedia Weathering [1]



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