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tons of thousands of sediments are deposited each day
They are deposited at the river mouth, before it finally empties its water into the ocean.
After that it would be deposited when the flow of the river is too slow to carry it.
The further from the delta, the finer the sediments deposited.
The Delta
when rivers enter oceans or lakes, the water slows and sediment is deposited.
The greater the speed the less sediment deposited. A delta is where a river slows way down and sediment is deposited at the mouth of the river.
Alluvial sediments are those deposited by a river.
They settle out as deposited sediments.
Delta
sediments are transported by ocean rift, streams, river currents, wind (air). they are deposited according to size. The largest sediments are deposited first. The sediments settle into the sand and are carried by the stream. Near the mouth of the stream where the water moves slowly the small sediments settle out. The larger sediments get carried by the river into the sea then the samller sediments. The sea water dissolved minerals and soak the sediments and cement together. This eventually forms sediments.
Most of it is trapped at the dam at Lake Nasser. After that it would be deposited when the flow of the river is too slow to carry it and ultimately what is left is deposited in the delta.