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| process where the surface of the earth is worn away by the action of water, glaciers, winds, waves |
| capability of a porous rock or sediment to permit the flow of fluids through its pore spaces |
| B horizon | |
| —n | |
| the layer of a soil profile immediately below the A horizon, containing deposits of leached material | |
| B horizon
In ABC soil, the second and middle zone, characterized by an accumulation of soluble or suspended organic material, clay, iron, or aluminum. These materials originate in the A horizon and are transported to the B horizon through the process of eluviation. B horizons often have a blocky structure and are reddish in color due to the presence of oxidized metals. Also called zone of accumulation, zone of illuviation. |