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← GeographyWhich surface feature is accelerated meltwater flow primarily responsible for where active solifluction lobes are present?
A)Gully formation along flow paths✓
B)Thermokarst collapses into sinkholes
C)Formation of patterned ground polygons
D)Increased vegetation density on lobes
💡 Explanation
When glacial meltwater concentrates on saturated solifluction terrain, gully erosion occurs because increased flow velocity and volume enhances downcutting. Therefore, gully formation along flow paths results, rather than thermokarst collapse or patterned ground, which demand alternate freeze-thaw cycles, and enhanced vegetation which contradicts exposed soil properties.
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