B horizon | soil type | Britannica (original) (raw)

soil type

Also known as: zone of illuviation

Learn about this topic in these articles:

composition

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  In soil: Soil horizons
  Below A lies the B horizon. In mature soils this layer is characterized by an accumulation of clay (small particles less than 0.002 mm [0.00008 inch] in diameter) that has either been deposited out of percolating waters or precipitated by chemical processes involving dissolved products of weathering. Clay endows…
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