Which process causes terraced landscapes within an alluvial river valley environment?

💡 Explanation

When tectonic uplift causes differential changes in elevation relative to the river's base level, entrenchment occurs because the downcutting river erodes through previously deposited floodplain sediments, creating a sequence of terraces. Therefore uplift versus deposition leads to terraces, rather than weathering, isostatic rebound or destabilizataion all which need different mechanics.

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