How is pediplain formed?

Pediplain is a broad and relatively flat rock surface formed by the joining of several pediments. As water and wind slowly erode and disintegrate rock surfaces, they reduce mountain ranges into a series of pediments at the base, and these pediments gently slope outward, where they coalesce with each other to form one large plain, which is the pediplain. Pediments are best formed in arid and semi-arid areas where rainfall is intense for brief moments of time.

Pediment: It is a gently sloping bedrock surface created by lateral erosion or by mechanical weathering.

 

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