Water's ability to transport a load (a grain of sediment) depends on how fast it is flowing. Fast flowing water can move boulders but as the water slows its ability to move things diminishes. As a river enters the sea it ceases to flow (it has reached sea level) and it therefore deposits its last sand first and only the finest silt is carried further by the inertia of the flow.
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Silt particles are smaller and lighter than sand particles, so they can be carried farther out to sea by ocean currents before settling. Sand particles tend to settle closer to the shore due to their larger size and weight.
A delta is the sediment filled , triangular shaped outflow of a major river into a large body of water. The most famous deltas are the "Nile Delta" and the "Mississippi Delta".
Deltas are formed at the old stage of the river that is at the mouth of the river. Deposition is the main activity. The largest delta in the world is Ganga-Brahmaputra Delta.
An alluvial plain, sometimes also referred to as a fluvial plain.
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Deltas can be found on all continents, as they form at the mouth of rivers where sediment is deposited as the river flows into a larger body of water, such as an ocean or sea. Examples of well-known deltas include the Mississippi River Delta in North America and the Nile Delta in Africa.
The Mississipi is one of the main rivers of USA.
One prominent soil region in Mississippi where alluvial soil can be found is the Mississippi Alluvial Plain, also known as the Delta region. This area is characterized by fertile, nutrient-rich alluvial soils deposited by the Mississippi River and its tributaries, making it ideal for agriculture. The region supports a variety of crops, including cotton, soybeans, and rice, benefiting from the rich sediment and moisture available in the soil.
A delta is the mouth of a river.
The northwest portion of the state, the Delta, contains 86 percent of Mississippi's catfish production.