Dispersion (geology)
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Dispersion refers to the distribution of a particular chemical constituent or element in a particular rock or soil, where the concentration of the element gradually reaches the average value (or background) from high concentrations with respect to space. Dispersion can be considered as primary or secondary, based on formational environment.
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Dispersion occurs when a soil is sodic. When a sodic soil is wetted, the clay particles are forced apart. This is generally a major cause of erosion.
[edit] Prevention of dispersion
Preventing dispersion can be done by:
- re-vegetating the area
- preventing the soil from becoming sodic though management of salinity
- careful management of soils on slopes, such as avoiding clearing slopes.
