Glossary:Argillic horizon

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Argillic horizon
A mineral soil horizon that is characterized by the accumulation of illuvial phyllosilicate clays. The argillic horizon is defined by percent clay content relative to the overlying clay depleted (eluvial horizon) and usually has coatings of clay on the surface of soil pores and structures where it has been deposited from percolating soil water.

Related Words: Illuvial, Eluvial, Lessivage, Horizon (soil)

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

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