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

Subedi, Rupesh; Kokelj, Steven V.; Gruber, Stephan

doi:https://doi.org/10.5194/tc-14-4341-2020

Articles | Volume 14, issue 12

https://doi.org/10.5194/tc-14-4341-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-14-4341-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 12

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, Steven V. Kokelj, and Stephan Gruber

Supplement

https://doi.org/10.5194/tc-14-4341-2020-supplement

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

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.