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Cryoturbation
Cryoturbation is an important process in the active layer of permafrost, in which beds and lenses of uncosolidated sediments are folded, broken and dislocated due to constant thawing and freezing.
Differently coloured materials folded in different ways produce distinctive patterns visible in cross-section.
Cryoturbation © Brentwood Higman & Andrew Mattox
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