Erosion is the loosening and the
removal of earth materials by water, ice or wind. In Louisiana, erosion
is more often associated with running water in streams, rivers or damns.
This would include the process of abrasion rock which is caused by friction
and impact during tra
nsportation.
In this process of abrasion, whatever is being transported of reduced in
size as it is grinned during movement. In river transporting erosion, foreign
grooves, pot holes and waterfalls can develop. A waterfall in some ways,
such as a drainage system, can be helpful to the surroundings of an area
not eroded.
In this picture, there is a good
example of a groove cut cut by running water. Some of the loose particles
eroded by the stream can be seen on the surface of this 12 inch groove
on the rocks.
WHAT HAPPENS IN EROSION?
Under erosion a number of things can happen. Weathering,
which takes place in glaciers, rivers and with wind can happen. The transportation
of different sediments can also take place. Sediment particles or loose
materials are produced by erosion. Moreover sedimentary rocks, which is
when sediment
material is carried and a cement of loose particles is formed, become lithified
into a rock.
A large boulder in Clark Creek has some prominent features
created by stream erosion. The surface shown in the photo was once horizontal
and apart of a stream bed. However the circular depression of about on
foot in diameter are potholes, which were created by swirling stream currents.
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