| A | B |
|---|
| hydrolysis | the reaction of a compound with water to create a new compound |
| illuviation | deposition in a soil layer of materials transported from a higher soil layer by percolating water |
| laustrine | mineral sediments deposited in fresh water |
| loess | wind-deposited silt |
| leaching | removal of soluble material in solution from the soil by percolating water |
| oxidation | a chemical reaction in which an element loses electrons to another participant in the reaction, often oxygen |
| soil horizon | the horizontal layer of soil |
| soil profile | the vertical section of a soil through all its horizons, ending in the parent material |
| solution | water with ions dissolved in it |
| topsoil | The A horizon; or soil stirred during tillage |
| alluvial soil | a soil developed from mud deposited by running water |
| colluvium | a deposit of rock and soil resulting from materials sliding down a slope under the force of gravity |
| elluviation | removal of a material, such as clay or nutrients, from a layer of soil by percolating water |
| eolian deposit | wind-deposited soil mateiral, mostly silt and fine sand |
