soil-horizon-b

phenomenon

picture of term

Has synonym(s): subsoil

Definition: Subsoil is the layer of soil under the topsoil on the surface of the ground. Like topsoil, it is composed of a variable mixture of small particles such as sand, silt and clay, but with a much lower percentage of organic matter and humus, and it has a small amount of rocks which are smaller mixed with it. The subsoil is also called B Horizon.

Source: Wikipedia

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