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← GeographyWhich sediment transport mechanism dominates the formation of a rock glacier initiating from a cirque?
A)Solifluction enhanced by permafrost creep✓
B)Fluvial erosion along meltwater channels
C)Aeolian deposition of fine-grained sediments
D)Glacial plucking by a receding ice mass
💡 Explanation
When a cirque transitions to a rock glacier, solifluction, aided by permafrost creep, becomes dominant because freeze-thaw cycles saturate sediments with water, causing slow downslope movement over ice. Therefore enhanced solifluction results, rather than fluvial or aeolian processes, or glacial plucking which involves different drivers.
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