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← GeographyWhich geologic consequence results when high discharge fluvial systems deposit sediment at mountain front?
A)Formation of broad alluvial fan deposits✓
B)Development of incised river terraces
C)Creation of deep submarine canyons
D)Generation of extensive loess deposits
💡 Explanation
When fluvial systems discharge at a break in slope, reduction in transport capacity occurs because the flow spreads, depositing sediment and forming alluvial fans. Therefore broad alluvial fan deposits result, rather than terraces, canyons, or loess deposits which depend on different mechanisms like incision, turbidity currents, or aeolian processes.
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