alluvial soil
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Answer:
Alluvial soils are soils deposited by surface water. You'll find them along rivers, in floodplains and deltas (like the Mississippi Delta), stream terraces, and areas called alluvial fans. This last category results from larger floods, causing the soil to spread out in the shape of a triangle fan.
Alluvium is loose, unconsolidated soil or sediment that has been eroded, reshaped by water in some form, and redeposited in a non-marine setting. Alluvium is typically made up of a variety of materials, including fine particles of silt and clay and larger particles of sand and gravel
alluvial soil contains
Alluvium consists of silt, sand, clay, and gravel and often contains a good deal of organic matter. It therefore yields very fertile soils such as those of the deltas of the Mississippi, the Nile, the Ganges and Brahmaputra, and the Huang rivers.
alluvial soil is formed
Rivers while flowing through mountains erode the rocks. ... These sediments and silt are then deposited on river bank and the land that is flooded by rivers. Deposition of these sediments results in the formation of the alluvial soil.
Fertility of alluvial soil
Alluvium soil is formed by the sediments brought down by rivers. The soil is fertile as it consists of very fine particles and is rich in potash, phosphoric acid and lime. Besides, the alluvial soil is a mixture of sand, clay and silt called loam. Clayey soil like alluvium has moisture retentive capacity.
The main advantages of alluvial soil are;
They are very humus rich in nature and are fertile.
They are rich in potassium and are highly suitable for the agriculture.