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Dissolving different materials from low to high density in an ice-rich diamict with suspended and crustal cryostructures.
Dissolving different materials from low to high density in an ice-rich diamict with suspended and crustal cryostructures.
Blackstone uplands, Yukon.
Blackstone uplands, Yukon.
Horizontal profile (a), vertical profile (b), and 3D CT (c) images of frozen clay.
Horizontal profile (a), vertical profile (b), and 3D CT (c) images of frozen clay.
Porosity analysis of ice wedge sample
Porosity analysis of ice wedge sample
Ice wedges have distinctive foliations representing the infilling of thermal contraction cracks either by water (snow melt), snow or sediment. Industrial CT scanning allows imaging and quantification of these processes. Here, some ice wedge samples from the Inuvik area with bubbles (low density) in blue/green/yellow and darker areas of higher density ice and sediment.
Drilling impacts on permafrost cores
Drilling impacts on permafrost cores
The drilling process can impact permafrost cores. Here, we use CT scanning to image the impacts of the drilling process (thawing and refreezing along core edges) on glaciomarine cores from Nunavut. Samples courtesy of Chris Stevens from Permafrost Consulting Ltd.
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