Deposition is the process of eroding sediment deposited elsewhere. Erosion, another natural process that moves the fragmented rock and soil over a distance from the wind or water, this often causes rivers to flood over the banks depositing large bodies of silt onto the flooded land. Due to the repeated flooding of some rivers, the land surrounding the river flattens out, creating a flood plain. Then the flood plains often spread out in a triangular shape called a Delta. Deltas are built up from soil dumped when a river empties into a lake or ocean.
Sandbars are offshore shoals of sand deposited with slower moving water.
Moraines are formed by the upward force of material in front of the glaciers. Pulsipher, Lydia Milelic. World Regional Geography. A World Regional Geography. Gabler, Robert, Robert Sager, Daniel Wise.