How do Gorge and waterfall formed?
Answers
Answer:
The drop gets steeper as the river erodes the soft rock beneath by processes such as abrasion and hydraulic action. A plunge pool forms at the base of the waterfall. ... A steep sided balley known as a gorge is left behing and as the process continues the waterfall gradually retreats upstream.
Explanation:
Formation of a waterfall:
The soft rock erodes more quickly, undercutting the hard rock.
The hard rock is left overhanging and because it isn’t supported, it eventually collapses.
The fallen rocks crash into the plunge pool. They swirl around, causing more erosion.
Over time, this process is repeated and the waterfall moves upstream.
A steep-sided gorge is formed as the waterfall retreats.
formation of a gorge :
A gorge is a steep-sided, narrow valley with a river or stream running along the bottom. Gorges are formed by the interplay of several geological processes, including erosion, tectonic processes such as vertical uplift and cavern collapse. Erosion by the resident body of water is usually the primary contributor to gorge formation.