Articles | Volume 14, issue 12
The Cryosphere, 14, 4341–4364, 2020
https://doi.org/10.5194/tc-14-4341-2020
The Cryosphere, 14, 4341–4364, 2020
https://doi.org/10.5194/tc-14-4341-2020

Research article 02 Dec 2020

Research article | 02 Dec 2020

Ground ice, organic carbon and soluble cations in tundra permafrost soils and sediments near a Laurentide ice divide in the Slave Geological Province, Northwest Territories, Canada

Rupesh Subedi et al.

Data sets

Data on ground ice, organic carbon and soluble cations in tundra permafrost and active-layer soils near Lac de Gras in the Slave Geological Province, N.W.T., Canada Rupesh Subedi, Steven V. Kokelj, and Stephan Gruber https://doi.org/10.5281/zenodo.4133892

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Short summary
Permafrost beneath tundra near Lac de Gras (Northwest Territories, Canada) contains more ice and less organic carbon than shown in global compilations. Excess-ice content of 20–60 %, likely remnant Laurentide basal ice, is found in upland till. This study is based on 24 boreholes up to 10 m deep. Findings highlight geology and glacial legacy as determinants of a mosaic of permafrost characteristics with potential for thaw subsidence up to several metres in some locations.