Water flow Rejuvenation

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Water flow Rejuvenation

River terraces

The following two landforms are very important features of an area, which has undergone rejuvenation process:

(1) River Terraces.

(2) Incised River Meanders.

These two features are invariably found in the landscape, which has been rejuvenated.

(i) River Terraces. When the rejuvenation process sets in, the river begins down-cutting besides broadening its valley. As a result the channel of the river goes on sinking into the plain. After some time, the old flood plain appears much elevated as compared to the new sunken river valley. The remnants of the old flood plain on either side of the sunken river are known as river terraces. In other words the upper parts of the benches built on both the sides of the valley must have alluvial floors of the former valley and are therefore called river terraces.

If the uplift takes place with breaks, a number of terrace pairs are seen. These are known as Paired Alluvial Terraces.

(ii) Incised Meanders. Meanders deepen when rejuvenation sets in. After some time the new meanders get deeper. These deeper meanders are known as Incised meanders. The river Wye makes incised meanders in England. Incised meanders of the in north Wales are found near the city of Langollen.

Next: River capture

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