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← GeographyWhich surface deformation commonly results from seasonal solifluction in subarctic tundra caused by melting permafrost?
A)Terracettes forming downslope via soil creep✓
B)Esker ridge progradation from glacial meltwater
C)Drumlin field alignment through ice flow
D)Kame deposition related to stratified drift
💡 Explanation
When permafrost thaws in summer in tundra, solifluction occurs as the active soil layer becomes saturated and flows slowly downslope due to gravity, forming terracettes because this slow creep results in step-like formations. Therefore terracettes form, rather than glacial features like eskers, drumlins or kames which involve ice deposition.
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