What evidence from the map suggests that the pediment is covered with a mantle of alluvium?

1 answer:

6 0

The evidence is when there is degradation. it is characteristic of channel networks in which either bedrock erosion is taking place, or in systems that are sediment-starved and are therefore entraining more material than is being deposited. When a stream degrades, it leaves behind a fluvial terrace. This can be further classified as a strath terrace—a bedrock terrace that may have a thin mantle of alluvium—if the river is incising through bedrock.

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