Alluvial Fan.
alluvial fan
Alluvial Fan
A deposit that forms where a river leaves a mountain range is called an alluvial fan. This fan-shaped deposit is created as the river slows down and deposits sediment and debris that it has carried from the mountains.
Alluvial fan.
tisza
tisza
tisza
Delta
delta
A deposit at the opening of a river is called delta.
An alluvial fan starts at just a build up of sediment at the mouth of a river. As the current moves, more and more sediment is lifted into the stream and carried until it hits a sediment deposit. As the sediment deposit gets bigger, it is exposed to the air and forms a sediment mountain. As the mountain gets bigger it forms an island in the middle of the mouth of a river. This is called an alluvial fan! Hope this was helpful!
An alluvial plain, sometimes also referred to as a fluvial plain.