Surficial geology, Yellowknife area, Northwest Territories, parts of NTS 85-J/7, NTS 85-J/8, NTS 85-J/9, and NTS 85-J/10 / [Authors: S.A. Wolfe and D.E. Kerr]. : M183-1/183-2014E-PDF
"Yellowknife Bay was covered by the Laurentide Ice Sheet, with generally southwestward ice flow, during the Late Wisconsinan glaciation until about 10,000 BP. With ice retreat, Glacial Lake McConnell inundated the area, which was replaced by ancestral Great Slave Lake as water levels declined. Surficial geology includes widely-exposed bedrock, and a dominance of fine-grained sediments within low-lying areas deposited within deep glaciolacustrine and shallow post-glacial lake settings. Other sediments include extensive subaqueous outwash deposits of sand and gravel, re-sorted at the surface by wave-action. Wave-washed bedrock is also common, with occasional perched boulders on bedrock and little if any exposed till. Vegetation consists mainly of open to dense forests of black spruce, jack pine, and paper birch mixed with marshes, fens and peat bogs in low-lying areas. Permafrost is extensively discontinuous in the area, occurring within most organic deposits as well as alluvial and glaciolacustrine sediments"--Abstract.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.858784&sl=1
| Ministère/Organisme | Canada. Natural Resources Canada. Geological Survey of Canada. |
|---|---|
| Titre | Surficial geology, Yellowknife area, Northwest Territories, parts of NTS 85-J/7, NTS 85-J/8, NTS 85-J/9, and NTS 85-J/10 / [Authors: S.A. Wolfe and D.E. Kerr]. |
| Titre de la série | Canadian geoscience map ; 183 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| 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 | Wolfe, Stephen Andrew, 1963- Kerr, Daniel Ernest, 1961- |
| Description | 1 map : col. + 1 map information document ([11] p.). |
| ISBN | 978-1-100-23415-1 |
| Numéro de catalogue |
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| Numéro de catalogue du ministère | 293725 |
| Édition | Preliminary version |
| Données cartographiques | Scale 1:25,000 ; Universal Transverse Mercator, zone 11 (W 114°34’--W 114°12'/N 62°34'30--N 62°23’) |
| Descripteurs | Geological maps Geomorphology Surficial geology |
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