Fold-thrust belt development: Intense erosion vs. no erosion

 

 

In this video we show how erosion can affect the width of a mountain range. Mountains can focus precipitation on one side of the range.

Rainshadow_copy

image: wikipedia.org

In areas that experience focused, intense precipitation, such as the Himalayan fold-thrust belt in northeast India during the monsoon, erosion can reduce the thickness of the wedge of material being deformed during an orogenic event causing older faults to start to move again. This can have repercussions for the width of the orogen and as you’ll see in the video, increased erosion leads to a narrower mountain range.

 

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