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← GeographyWhich outcome occurs when continuous alluvial deposition exceeds the subsidence rate?
A)Formation of a perched alluvial aquifer✓
B)Increased frequency of turbidity currents
C)Enhanced river channel avulsion
D)Development of a braided stream pattern
💡 Explanation
A perched alluvial aquifer forms because the aggradation from alluvial deposition outpaces the subsidence rate, allowing groundwater to accumulate above the regional water table; therefore, water accumulates, rather than causing increased currents or different stream morphology.
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