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A delta is a land form created at the mouth of the river by the gradual deposition of river born sediments. See also "alluvial fan."

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Izabella Bins

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What is the name of a triangle shaped island at the mouth of a river that is formed from river sediments.?

A delta is a triangle-shaped island at the mouth of a river that is formed from river sediments. Deltas are typically fertile areas due to the accumulation of nutrient-rich soil deposited by the river.


What do you call land at the mouth of a river?

The land formed at the end of a river is called a delta. If you take your hand and spread out your fingers you can use your arm to represent the river and your fingers as the end of the river to represent the delta.


Is a delta formed by erosion or deposition?

A delta is formed by deposition. Deltas are landforms that are created where a river meets a body of water, like an ocean or a lake. As the river flows into the larger body of water, it slows down, causing sediment it was carrying to settle and build up over time, forming the delta.


What are magma and sediment and how are each formed?

Magma is formed by the heating and cooling of the Earth's crust. Sediment is formed by the soil that is moved downstream from the source of a river to the mouth of the river and the resulting delta.


What is the land formed at the mouth of a river called that is deposited by silt?

The land formed by deposited soil at the mouth of a river is called a delta (named for the Greek letter, which is similarly triangular in shape).The most well known are the Ganges River Delta, India, the Nile River Delta, Egypt, and the largest is the Amazon River Delta, Brazil.