Lithalsa
Partially melted and collapsed lithalsas (heaved mounds found in permafrost) have left ring-like structures on the Svalbard Archipelago
Lithalsa is a frost-induced raised land form in permafrost areas with mineral-rich soils, where a perennial ice lens has developed within the soil. The term sometimes also refers to palsas and pingos.
See also
- Cryoturbation
- Frost heaving
- Gelifluction
- Gelisol
- Ice wedge
- Patterned ground
- Paraglacial
- Periglacial
- Permafrost
- Pingo
- Solifluction
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