Which process limits alluvial terrance downcutting after deposition on a wide fluvial alluvial fan?

💡 Explanation

When aggradation occurs on an alluvial fan, channel avulsion occurs because channels seek the steepest path of least resistance, laterally diverting flow across the fan surface, limiting focused downcutting. Therefore channel avulsion is the primary result, rather than bedrock uplift, base level, or climate change effects that operate on much larger spatial and temporal scales.

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