Which term describes a gentle, undulating plain of low relief formed by the subaerial denudation of a rock mass, often found at the base of receding mountain fronts?

💡 Solution & Explanation

A pediment is an erosional bedrock surface of low relief formed at the base of a retreating mountain front, typically developed through lateral planation and sheetwash processes in arid or semi-arid climates. Unlike a peneplain, which forms near base level due to humid subaerial denudation over vast timescales, a pediment forms locally under dry conditions.