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TitreAn updated assessment of ground ice and permafrost geology-related observations based on seismic shothole drillers' log records, Northwest Territories and northern Yukon
AuteurSmith, I R; Lesk-Winfield, K
SourceCommission géologique du Canada, Dossier public 7061, 2012; 1 DVD, (Accès ouvert)
LiensMetadata - Métadonnées
ÉditeurRessources naturelles Canada
Documentdossier public
MediaDVD; numérique; en ligne
Formatstxt; pdf; shp; doc; html
ProvinceTerritoires du Nord-Ouest; Yukon
SNRC85C; 85D; 85E; 85F; 85K; 85L; 95A; 95B; 95G; 95H; 95I; 95J; 95K; 95N; 95O; 95P; 96A; 96B; 96C; 96D; 96E; 96F; 96G; 96K; 96L; 96M; 96N; 96O; 97B; 97C; 106E; 106G; 106H; 106I; 106J; 106K; 106L; 106M; 106N; 106O; 106P; 107A; 107B; 107C; 107D; 107E; 116F; 116G; 116H; 116I; 116J; 116K; 116O; 116P; 117A; 117D
Lat/Long OENS-136.1667 -116.0000 70.0000 60.0000
Lat/Long OENS-141.0000 -133.5000 69.5000 65.0000
Sujetsdonnées sismiques; lithologie; lithostratigraphie; pergélisol; congélation du sol; glace fossile; dépôts glaciaires; dépôts fluvioglaciaires; phénomènes fluvioglaciaires; topographie glaciaire; elements glaciaires; dépôts postglaciaires; dépôts fluviaux; dépôts glaciaires; épaisseur de la couverture meuble; isopaques; aggrégats; graviers; sables; silts; argiles; blocs; glace massive; roches sédimentaires; géophysique; géologie des dépôts meubles/géomorphologie; géologie régional; stratigraphie; hydrogéologie; géologie économique; géologie de l'environnement; Nature et environnement; Phanérozoïque; Cénozoïque; Quaternaire; Mésozoïque; Paléozoïque
ProgrammeRenforcement de la résilience des communautés canadiennes face aux changements climatiques, Géosciences de changements climatiques
Diffusé2012 04 19
Résumé(disponible en anglais seulement)
This publication utilizes seismic shothole drillers' litholog records to document ground ice and massive ice thickness and extents in the Northwest Territories and northern Yukon. It also provides estimates of permafrost thickness in areas of thin extensive and sporadic discontinuous permafrost, and the identification of unfrozen sediments (non-ice-bonded permafrost and/or existing and relic taliks) in areas of thick permafrost cover, and in offshore Mackenzie Delta sediments. Limitations of the seismic shothole drillers' log data are clearly recognized in their application to permafrost studies (reflecting the generally shallow (10 - 60 m) shothole depth, and logging imprecision). They nonetheless provide a rich archive of information that in some cases represents orders of magnitude more records than previously existed, that can be correlated with established monitoring sites and used to expand regional interpretations. The information interpreted from the drillers' log records will perhaps best serve as guides to future permafrost research by identifying key areas of interest, lithostratigraphic associations, and anomalous permafrost conditions that can be studied and tested in follow-up field research.