from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The lateral or downward movement of dissolved or suspended material within soil when rainfall exceeds evaporation.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The sideways or downward movement of dissolved or suspended material within soil caused by rainfall
- n. Creation of geological deposits (eluvial deposits) by in situ weathering or weathering plus gravitational movement or accumulation.
This acidic soil solution enhances the processes of eluviation and leaching causing the removal of soluble base cations and aluminum and iron compounds from the A horizon.
This layer is composed primarily of mineral particles and has two characteristics: it is the layer in which humus and other organic materials are mixed with mineral particles, and it is a zone of translocation from which eluviation has removed finer particles and soluble substances, both of which may be deposited at a lower layer.
Movements of large amounts of water through the soil cause eluviation and leaching to occur.
Common characteristics of recognition include immature development of eluviation in the A horizon and illuviation in the B horizon, and evidence of the beginning of weathering processes on parent material sediments.
The A horizon is commonly differentiated into a darker upper horizon or organic accumulation, and a lower horizon showing loss of material by eluviation.
Good drainage enhances an number of pedogenic processes of illuviation and eluviation that are responsible for the development of soil horizons.
Generally, these horizons result from the processes of chemical weathering, eluviation, illuviation, and organic decomposition.
It reduces the eluviation of soluble nutrients from the soil profile.
This soil, however, has a calcareous parent material which results in a high pH and strong eluviation of clay from the A horizon.
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