Incised Meanders (Rejuvenation) Flashcards
1
Q
When is an ingrown meander formed?
A
When incision is slow and lateral erosion is occurring.
2
Q
What are the features of an ingrown meander?
A
- asymmetrical valley
- steep cliffs on the outer bend
- more gentle slip-off slopes on the inner bends
3
Q
When do entrenched meanders occur?
A
With rapid incision, where downcutting or vertical erosion dominates, they valley is more symmetrical.
4
Q
What are the features of an entrenched meander?
A
- steep sides
* gorge-like appearance
5
Q
When do incised meanders occur?
A
If a rejuvenated river occupies a valley with well-developed meanders, renewed energy results in them becoming incised or deepened. The nature of them is a result of the rate at which vertical erosion has taken place.
