| Deposition (chemistry) - Encyclopedia, History, Geography and Biography (147 words) |
 | Deposition is a term used in chemistry to describe the settling of particles or sediment from a solution or suspension mixture, or the production of a solid on a pre-existing surface. |
| Deposition of particles is an aggradational process — one that builds a landform — as opposed to a degradational process that erodes or reduces the size of a landform. |
| For example, a river mouth delta is formed by deposition of sediment carried by the stream as the river current diminishes upon encountering the sea. |
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