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← GeographyWhich mechanism causes reversing transverse dune crest migration?
A)Seasonal wind regime shift✓
B)Vegetation induced sediment stabilization
C)Groundwater capillary action alteration
D)Feldspar weathering induced cementation
💡 Explanation
Seasonal offshore winds cause reversing dune crest migration due to wind transport. The mechanism, saltation, mobilizes sand grains upwind, causing dune reversal; therefore seasonal wind shifts explain the alternating direction, rather than cementation or groundwater influence dominating sediment deposition.
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