what is soil profile

a vertical section of soil from the ground surface to the parent rock is called soil profile

soil consists of 5 profiles they are:

O-horizon

A-horizon

B-horizon

C-horizon and bed rock

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it is a collum of different layers of soil

Cross section of soil.

Asoil horizonis a layer generally parallel to thesoilsurface, whose physical characteristics differ from the layers above and beneath. Each soil type usually has three or four horizons. Horizons are defined in most cases by obvious physical features, chiefly colour and texture. These may be described both in absolute terms (particle size distribution for texture, for instance) and in terms relative to the surrounding material, i.e. coarser or sandier than the horizons above and below. The differentiation of the regolith into distinct horizons is largely the result of influences, such as air, water, solar radiation, and plant material, originating at the soil-atmosphere interface. Since the weathering of the regolith occurs first at the surface and works its way down, the uppermost layers have been changed the most, while the deepest layers are most similar to the original regolith (i.e., parent material).

Asoil horizonis a layer generally parallel to thesoilsurface, whose physical characteristics differ from the layers above and beneath. Each soil type usually has three or four horizons. Horizons are defined in most cases by obvious physical features, chiefly colour and texture. These may be described both in absolute terms (particle size distribution for texture, for instance) and in terms relative to the surrounding material, i.e. coarser or sandier than the horizons above and below. The differentiation of the regolith into distinct horizons is largely the result of influences, such as air, water, solar radiation, and plant material, originating at the soil-atmosphere interface. Since the weathering of the regolith occurs first at the surface and works its way down, the uppermost layers have been changed the most, while the deepest layers are most similar to the original regolith (i.e., parent material).