Dispersion (geology)
Encyclopedia
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
.
Clay
Clay is a general term including many combinations of one or more clay minerals with traces of metal oxides and organic matter. Geologic clay deposits are mostly composed of phyllosilicate minerals containing variable amounts of water trapped in the mineral structure.- Formation :Clay minerals...
particles are forced apart. This is generally a major cause of erosion
Erosion
Erosion is when materials are removed from the surface and changed into something else. It only works by hydraulic actions and transport of solids in the natural environment, and leads to the deposition of these materials elsewhere...
.
Prevention of dispersion
Preventing dispersion can be done by:- re-vegetating the area
- preventing the soil from becoming sodic though management of salinitySalinitySalinity is the saltiness or dissolved salt content of a body of water. It is a general term used to describe the levels of different salts such as sodium chloride, magnesium and calcium sulfates, and bicarbonates...
- careful management of soils on slopes, such as avoiding clearing slopes.