turf hummock

turf hummock:    A hummock consisting of vegetation and organic matter with or without a core of mineral soil or stones (typically 10-50 cm height; 20-90 cm diameter). Groups of hummocks can form a type of patterned ground common to tundra or wet areas (e.g., marsh).

   Compare: earth hummock, nonsorted circle, patterned ground.

   NRC & SW

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hummock — 1) [ geomorphology ] a) (not preferred see hillock). An imprecise, general term for a rounded or conical mound or other small elevation. b) (not preferred) A slight rise of ground above a level surface. GG 2) [ patterned ground ]… … Glossary of landform and geologic terms
earth hummock — A type of hummock consisting predominantly of a core of silty and clayey mineral soil and showing evidence of cryoturbation. Earth hummocks are a type of nonsorted circle. Compare: turf hummock, hummock [ patterned ground ], nonsorted… … Glossary of landform and geologic terms

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