Incised meanders
If a rejuvenated river occupies a valley with well-developed meanders = renewed energy= they become incised + deepnd.
Incised streams + rivers have cut deeply into the landscape in many parts of the British Isles.
The nature of the landforms created is largely a result of the rate at which vertical ersion has taken place.
When incision is slow + lateral erosion is occurring = an ingrown meander may be produced.
When incision is slow + lateral erosion is occurring = an ingrown meander may be produced.
The valley becomes asymmetrical, with steep cliffs on the outer bends and more gentle slip-off slopes on the inner bends.
With rapid incision, where downcutting or vertical erosion dominates = the valley is more symmetrical, with steep sides and a gorge-like appearance, These are described as entrenched meanders.
No comments:
Post a Comment