Northwest Territories
Patterned ground types

Sorted circles and nets

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Low-centred lowland ice-wedge polygons in the foreground
and high-centred lowland polygons and a pingo in the background

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High-centred lowland ice-wedge polygons: material is dominated by peat

Ice wedge associated with high-centred lowland polygons

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Sorted nets

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Nonsorted stripes

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Contact: Head, CanSIS