Durisols
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Durisols are found in the drier climates of the world where a source of silica is present, notably Southern Africa and Australia. Smaller occurrences are reported from the USA and the Mediterranean region.
Characteristics
Soils having a (petro-)duric horizon (horizon with accumulation of secondary silica) within 100 cm from the soil surface.
Dark red Durisol, South Africa; cemented “duripan” starts at 40 cm depth (Chromi-Epipetric Durisol (Hyperochric)
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