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Thursday, November 29, 2012

fluvial process


This is the explanationon what we have seen and we make some study on what is the fluvial process is.
No.
Example
Description
1.


 

Truncated bends


·         Combined process of erosion, transport, and deposition causes become increasingly wide bends until the formation of bends truncated.
·         Erosion process, especially how active hydraulic erosion occurred on the banks of river bends concave, while the deposition process was actively going on convex banks of river bends.
·         Active erosion processes occurring on the banks of the biconcave shape of bends will eventually bends connected truncated.
·         Most of the water will now flow directly, while in the original amount of the flow decreases bends, forming a horseshoe lake.

2.


 





Horseshoe lake

·         Horseshoe lake formation occurs in three stages.
·         Stage 1 - Erosion occurs with vigor on the outer river bends while deposition occurred on the banks of the river bends. Outside of bends erosion and sedimentation in river bends causing both arc bends closer together.
·         Stage 2 - The two curves meet and flowing water.
·         Stage 3 - continuous deposition forming separate river bends of the new river channel. Original river bends apart from the new grooves will form a truncated bends and became a lake known as horseshoe lake.

3.


Cascade


·         A waterfall or a series of small waterfalls over steep rocks.
·         Formed on the upper river with rock layers arranged in horizontal and alternated between hard rock and soft rock.
·         Soft rock layers are more easily eroded than hard rock.
·         Hard rock layer that resists corrosion will be missed, thus preventing the flow of water forming waterfalls.
4.


River rapids


·         Formed in the upper reaches of the river have stacks of soft rock and hard rock alternately arranged vertically or almost vertically.
·         An active river erosion on soft rock cause corrosion resistant hard rock would extruded upwards.
·         As a result the flow of river water flow is inhibited then lope down the hard bumps.

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