GEOSCAN, résultats de la recherche


TitreEskers around the Keewatin Ice Divide: Northwest Territories and Nunavut
AuteurAylsworth, J M; Shilts, W W; Russell, H A J; Pyne, D M
SourceCommission géologique du Canada, Dossier public 7047, 2012, 14 pages; 1 CD-ROM,
LiensMetadata - Métadonnées
Documentdossier public
MediaCD-ROM; en ligne; numérique
Référence reliéeCette publication est reliée les publications suivantes
Formatspdf; xls; shp; rtf
ProvinceTerritoires du Nord-Ouest; Nunavut
SNRC45C/03; 45C/04; 45C/05; 45C/06; 45C/11; 45C/12; 45C/13; 45C/14; 45D; 45E; 45F/03; 45F/04; 45F/05; 45F/06; 45F/11; 45F/12; 45F/13; 45F/14; 45K/03; 45K/04; 45K/05; 45K/06; 45K/11; 45K/12; 45K/13; 45K/14; 45L; 45M; 45N/03; 45N/04; 45N/05; 45N/06; 45N/11; 45N/12; 45N/13; 45N/14; 46C/03; 46C/04; 46C/05; 46C/06; 46C/11; 46C/12; 46C/13; 46C/14; 46D; 46E; 46F/03; 46F/04; 46F/05; 46F/06; 46F/11; 46F/12; 46F/13; 46F/14; 46K/03; 46K/04; 46K/05; 46K/06; 46K/11; 46K/12; 46K/13; 46K/14; 46L; 46M; 46N/03; 46N/04; 46N/05; 46N/06; 46N/11; 46N/12; 46N/13; 46N/14; 55; 56; 65; 66; 75; 76; 85; 86; 95A/01; 95A/02; 95A/07; 95A/08; 95A/09; 95A/10; 95A/15; 95A/16; 95H/01; 95H/02; 95H/07; 95H/08; 95H/09; 95H/10; 95H/15; 95H/16; 95I/01; 95I/02; 95I/07; 95I/08; 95I/09; 95I/10; 95I/15; 95I/16; 95P/01; 95P/02; 95P/07; 95P/08; 95P/09; 95P/10; 95P/15; 95P/16; 96A/01; 96A/02; 96A/07; 96A/08; 96A/09; 96A/10; 96A/15; 96A/16; 96H/01; 96H/02; 96H/07; 96H/08; 96H/09; 96H/10; 96H/15; 96H/16; 96I/01; 96I/02; 96I/07; 96I/08; 96I/09; 96I/10; 96I/15; 96I/16; 96P/01; 96P/02; 96P/07; 96P/08; 96P/09; 96P/10; 96P/15; 96P/16
Lat/Long OENS-121.0000 -88.0000 68.0000 60.0000
Sujetsdépôts glaciaires; dépôts fluvioglaciaires; elements glaciaires; topographie glaciaire; eskers; moraines; drumlins; cartographie par ordinateur; nappes glaciaires; géologie des dépôts meubles/géomorphologie; Quaternaire; Cénozoïque
Illustrationslocation maps; tables; histograms
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
Bibliothèque de Ressources naturelles Canada - Calgary (Sciences de la Terre)
Commission géologique du Canada (Atlantique)
Bibliothèque de Ressources naturelles Canada - Québec (Sciences de la Terre)
Bibliothèque de Ressources naturelles Canada - Vancouver (Sciences de la Terre)
ProgrammeBases de données couvrant les trois territoires (la télécartographie prédictive), GEM : La géocartographie de l'énergie et des minéraux
Diffusé2012 05 31
Résumé(disponible en anglais seulement)
Major esker ridges as mapped by line symbology have been captured digitally for 113 1:250,000 scale NTS map sheets in the Northwest Territories and western mainland Nunavut, formally the districts of Mackenzie and Keewatin. The complete dataset has only been available in a generalized form via the 1:1,000,000 hardcopy release of Aylsworth and Shilts (1989). It is now available in a digital vector format with basic line segment attribution at the original 1:250,000 scale. Basic data validation indicates that there are only minor registration issues as compared against 1:250,000 topographic base data from CanVec and NTDB datasets. Comparison of the esker network against more recent, higher resolution esker mapping at 1:125,000 and 1:250,000 scale indicates that the esker network captured here represents the long dendritic and subparallel esker classes of Brennand (2000) relatively well, but underestimates the number of isolated short esker segments. The utility of the digital dataset has been demonstrated in its use as a training dataset for a quantitative esker mapping algorithm (Broscoe et al., 2011). It is a comparable dataset to other synoptic digital glacial landform datasets generated in recent years, for example Storrar & Stokes (2007); with the exception that this dataset focuses on one landform element, eskers.