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← GeographyWhich outcome occurs when rapid tectonic uplift increases erosion rates in an arid mountain range forming an alluvial fan?
A)Increased sediment flux to depositional zones✓
B)Decreased channel avulsion frequency on fan
C)Reduced downstream sediment starvation effects
D)Enhanced weathering chemical reaction rates
💡 Explanation
Increased uplift and erosion result in a higher sediment supply to the fan via **sediment transport**, and deposition rates increase because the river's carrying capacity decreases, therefore creating a thicker, more extensive alluvial fan rather than less sediment being delivered or being weathered more.
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