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← GeographyWhich outcome occurs when sediment load overwhelms stream competence after intense uplift?
A)Braided streams and alluvial fan deposit✓
B)Terraces and canyon incision increase
C)Meandering channels and Oxbow lake form
D)Deltas shift with avulsion decreases
💡 Explanation
Alluvial fans form because rapid uplift causes sediment load to increase substantially, and deposition occurs along stream channels, exceeding stream competence, spreading outwards. Therefore, fan deposition characterizes this environment rather than channel incision because streams cannot carry huge amounts of sediment.
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