Surficial geology, Snowdrift, Northwest Territories, NTS 75-L / [Authors: D.E. Kerr ... [et al.]]. : M183-1/137-2014E-PDF
"The Snowdrift map area is characterized by predominantly glaciated, scoured and washed bedrock terrain. The more elevated areas north and south of the East Arm have isolated deposits of till veneer and blanket. Within the East Arm, some low lying depressions between bedrock ridges are infilled by glaciolacustrine sediments, with various colluvial deposits covering the steepest slopes. Glaciofluvial complexes consisting of eskers, ice-contact sediments and outwash, trend southwestward in the north and westward in the southern map areas. The Snowdrift River valley and its tributaries are predominantly infilled by terraced and floodplain alluvial sediments, and ridged and outwash glaciofluvial sediments, some with active dunes. The last ice flow recorded by glacial striae, fluted bedrock and crag-and-tails, was generally southwestward to westward, in the extreme southeast region of the map area. At various elevations, evidence of glacial Lake McConnell is found: isolated glaciolacustrine deltas at 350 m, 335 m, 320 m, 275 m, 260 m; washing limits at 335 m and 320 m; and raised beaches and wave-cut terraces at 335 m, 320 m, 305 m, 285 m, 228 m, 213 m, 200 m, 183 m and 168 m a.s.l"--Abstract.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.557213&sl=1
Ministère/Organisme | Canada. Natural Resources Canada. Geological Survey of Canada. |
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Titre | Surficial geology, Snowdrift, Northwest Territories, NTS 75-L / [Authors: D.E. Kerr ... [et al.]]. |
Titre de la série | Canadian geoscience map ; 137 |
Type de publication | Série - Voir l'enregistrement principal |
Langue | [Anglais] |
Édition précédente | Surficial geology, Snowdrift, Northwest Territories, NTS 75-L |
Format | Électronique |
Document électronique |
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Note(s) | This record only includes the map and the “Map information document” in PDF, the complete data set with all the files in various formats is available for free download at http://geoscan.nrcan.gc.ca/ Includes bibliographical references. Includes abstract in French. |
Information sur la publication | Ottawa : Natural Resources Canada, 2014. |
Auteur / Contributeur | Kerr, Daniel Ernest, 1961- |
Description | 1 map : col. + 1 map information document ([5] p.). |
ISBN | 978-1-100-25299-5 |
Numéro de catalogue |
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Numéro de catalogue du ministère | 295496 |
Édition | Preliminary 2nd ed. |
Données cartographiques | Scale 1:125,000 ; Universal Transverse Mercator, zone 12 (W 112°00’--W 110°00'/N 63°00'--N 62°00’) |
Descripteurs | Geological maps Snow Surficial geology |