processes of transportation Flashcards
What is transportation?
The carrying of sediment downstream from the point where it has been eroded to where it is deposited
What are the four methods of transportation?
Traction; saltation; suspension; and solution
What is traction?
This is the method used for moving the largest material. This is too heavy to lose contact with the bed, so material such as boulders is rolled along
What is saltation?
This moves the small stones and grains of sand by bouncing them along the bed. This lighter load leaves the river bed in a hopping motion
What is suspension?
This is a means of carrying very fine material within the water, so that it floats in the river and is moved as it flows
What is solution?
This is the dissolved load and occurs only with certain rock types that are soluble in rainwater. This is true of chalk and limestone and the load is not visible