Physical Geography B
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Table of Contents
There are a number of ways in which a river can break up and remove rocks and soil:
- Hydraulic action
This process is carried out by the strength and weight (or force) of the river itself. The force of the flowing water creates cracks and loosens the rock from the river bed and its sides.
This type of erosion is caused by the load the river is carrying; It scrapes against the rock wearing it down.
During this process of erosion there is friction between the load itself and between the load and the river bed. Rock particles hit of one another causing them to break down.
Minerals within the rock itself are dissolved by the flowing water.
- Vertical and Lateral erosion
There are a number of ways a river carries (or transports) its load. This is known as transportation. The way in which the load is carried depends on the size of the particles. The following are the main types of transportation: