Which surface deformation results when freeze-thaw cycles and permafrost layer impede drainage on gentle slopes?

💡 Explanation

When freeze-thaw cycles and underlying permafrost block drainage, saturated soil undergoes solifluction because gravity acts on the reduced shear strength, forming distinctive terracettes and lobes. Therefore solifluction lobes result, rather than eskers, kettle holes, or drumlins which require glacial deposition or erosion mechanisms.

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