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← GeographyWhich outcome occurs when rapid sediment deposition obstructs alluvial channel flow?
A)Avulsion shifts the channel location✓
B)Oxbow lake formation rate decelerates
C)Discharge capacity abruptly increases
D)River channel sinuosity subsequently decreases
💡 Explanation
Avulsion occurs because rapid sediment deposition overwhelms the channel capacity, invoking channel abandonment in favor of steeper pathways; therefore sediment redirects the water flow, rather than increasing capacity or decelerating oxbow formation.
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