soil horizon layers humus organic topsoil subsoil parent material and bedrock

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Soil Horizon layers. O is humus or organic, A is topsoil, B is subsoil, C is parent material and R is bedrock. Royalty Free Stock Photo

Soil Horizon layers. O is humus or organic, A is topsoil, B is subsoil, C is parent material and R is bedrock.

Seamless soil layers Royalty Free Stock Photo

Isometric soil layers Royalty Free Stock Photo

Soil Horizons and Layers Royalty Free Stock Photo

Soil layers diagram earth texture, stones. Ground with green grass on top. Mineral particles, sand, humus and stones Royalty Free Stock Photo

Most soils have three major horizons, the surface horizon (A), the subsoil (B), and the substratum (C). Some soils have an organic horizon (O) on the surface, but this horizon can also be buried. The master horizon, E, is used for subsurface horizons that have a significant loss of minerals (eluviation).