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TitlePermafrost solute concentrations in an active gravel pit: half-time results / Concentrations d'éléments dissous du pergélisol dans une gravière active : résultats à mi-parcours
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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorGammon, P
SourcePublic presentations of May 19, 2020: Environmental Geoscience Program, current status of research projects for the 2019-2024 program cycle; by Jacob, N; Outridge, P MORCID logo; Lintern, GORCID logo; Bringué, MORCID logo; Ahad, J M EORCID logo; Gammon, P R; Rivard, CORCID logo; Kao, HORCID logo; White, DORCID logo; Desbarats, A JORCID logo; Galloway, J MORCID logo; Duchesne, M JORCID logo; Geological Survey of Canada, Scientific Presentation 118, 2020 p. 128-136, Open Access logo Open Access
LinksVideo - Vidéo
PublisherNatural Resources Canada
MeetingPublic presentations of May 19, 2020: Environmental Geoscience Program; CA; May 19, 2020
Lang.English; French
Mediaon-line; digital
RelatedThis publication is contained in Public presentations of May 19, 2020: Environmental Geoscience Program, current status of research projects for the 2019-2024 program cycle
RelatedThis publication is related to Permafrost geochemistry
File formatpdf
ProvinceNorthwest Territories
NTS107B/07; 107B/10; 107B/15; 107C/01; 107C/02; 107C/07; 107C/08
AreaInuvik; Tuktoyaktuk
Lat/Long WENS-134.0000 -132.5000 69.5000 68.2500
Subjectsenvironmental geology; hydrogeology; geochemistry; surficial geology/geomorphology; Nature and Environment; Economics and Industry; environmental studies; environmental impacts; permafrost; ground ice; hydrologic environment; hydrologic properties; hydrologic budget; groundwater regimes; groundwater geochemistry; surface waters; water geochemistry; transport mechanisms; source areas; mining; gravels; solution; sampling techniques; sulphates; bicarbonate; sodium; chloride; gypsum; salinity; pH patterns; brine; carbon dioxide; models; Environmental Geoscience Program (EGP); environmental baseline studies; cumulative effects
Illustrationsphotographs; sketch maps; time series; plots
ProgramEnvironmental Geoscience Program Management
Released2020 09 15
AbstractThe geochemistry resulting from permafrost freeze-thaw processes are poorly understood. This EGP activity aims to refine our current understanding of these processes by investigating the geochemistry of a gravel pit associated with the building of the Inuvik to Tuktoyaktuk Highway (ITH). Construction-related water monitoring demonstrated that mining resulted in elevated concentrations for multiple elements in pit surface waters. Newly developed sampling techniques have added groundwater samples to surface water data. These demonstrate that there has been no amelioration of the high solute concentrations in either surface-or ground-water. The source of the high concentrations is local melting permafrost, although how the permafrost became so rich in solutes remains unclear. There are likely multiple ongoing water-rock interactions driven by these permafrost reactions. Unfortunately the water data is now orphaned because the companion ice could not be sampled due to COVID19 travel restrictions.
Summary(Plain Language Summary, not published)
This is the fifth year for the project leaders of the Environmental Geoscience Program (EGP) from the Geological Survey of Canada (GSC) within Natural Resources Canada to present their annual scientific updates. Twelve power point presentations illustrate all the project status of all research going on within EGP. Subjects are connected to the following key words: Volcanoes, mercury, dredge disposal at sea, oil spills, diluted bitumen, oil sands, aquifer impacts, induced seismicity, geological storage of carbon, cobalt, climate change, Mackenzie River Basin, permafrost thaw, permafrost geochemistry, and cumulative effects.

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