Reconnaissance surficial geology, Willow Lake, Northwest Territories, NTS 85-L / [authors, D.E. Kerr, P.D. Morse, and S.A. Wolfe]. : M183-1/304-2016E-PDF
"Glaciolacustrine sediments, associated with glacial Lake McConnell, were deposited as veneers over till in the broad, poorly drained low-lying areas of the northern, central and southeastern regions of the map area, below 290 m a.s.l. They are commonly overlain by organics and exhibit thermokarst activity. Glaciofluvial sediments and some bedrock ridges were reworked into glaciolacustrine beaches in the eastern lowlands. These beaches, occurring between 220 to 290 m a.s.l., mark the decreasing elevation of the glacial lake over time due to isostatic rebound. In the south, the Horn Plateau, rising to over 700 m, and consisting of till blanket, hummocky till, moraine complex, and colluvium on its slopes, remained above the limit of glaciolacustrine inundation. Crag-and-tails, drumlins and drumlinoids record a westward ice flow during the last glaciation, with local northwestward and southwestward diversions around the Plateau. A series of small moraine ridges on the Plateau may mark the retreat of ice margins or stagnating lobes during deglaciation about 11–10 ka BP"--Abstract.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.828138&sl=1
| Ministère/Organisme | Canada. Natural Resources Canada. Geological Survey of Canada. |
|---|---|
| Titre | Reconnaissance surficial geology, Willow Lake, Northwest Territories, NTS 85-L / [authors, D.E. Kerr, P.D. Morse, and S.A. Wolfe]. |
| Titre de la série | Canadian geoscience map ; 304 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique |
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| Note(s) | Relief shown by contours. 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, 2017. |
| Auteur / Contributeur | Kerr, Daniel Ernest, 1961- Morse, Peter Douglass, 1975- Wolfe, Stephen Andrew, 1963- |
| Description | 1 map : col. + 1 map information document ([6] p.). |
| ISBN | 978-0-660-06895-4 |
| Numéro de catalogue |
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| Numéro de catalogue du ministère | 299468 |
| Édition | Prelim. |
| Données cartographiques | Scale 1:125 000 ; Universal Transverse Mercator, zone 11 (W 120°00’--W 118°00'/N 63°00'--N 62°00’) |
| Descripteurs | Geological maps Geomorphology Surficial geology |
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