Horizontal layers that reveal a soil's history, characteristics, and usefulness.
distinctive layers found in a vertical cross section of any well-developed soil.
a layer of soil, approximately parallel to the soil surface The O horizon is an organic layer, which forms above the mineral soil - consisting of material from plants and animals. The A horizon is the surface layer where organic mater accumulates and is intermixed with the mineral fraction. The B horizon is called the subsoil, there is evidence of an alteration by mineral or chemical accumulation and / or movement through the soil profile, often soil structure develops. The C horizon is called the substratum, it is relatively little affected by biological activity and soil forming processes (pedogensis) it can be like or unlike the A and B horizons above it.
Soil is made up of distinct horizontal layers; these layers are called horizons. They range from rich, organic upper layers (humus and topsoil) to underlying rocky layers ( subsoil, regolith and bedrock).
A term used to describe the different layers of soil across a vertical soil profile.