Reconnaissance surficial geology, Pelly Lake, Nunavut, NTS 66-F, north / [authors: D. A. St-Onge and D. E. Kerr]. : M183-1/278-2016E-PDF
"Preliminary surficial geology studies, through aerial photograph interpretation and limited legacy data, were undertaken in the north half of the Pelly Lake map area. Widespread streamlined till blanket, hummocky till, till veneer and ridged till which may exhibit small transverse ridges locally, are common across the map area. Drumlinoids and crag-and-tails record a regional north-northwestward ice flow during the last glaciation, with local crosscutting age relationships. Rare morainal ridges indicate recessional or stagnant ice-marginal positions. Northward trending meltwater corridors consist of glaciofluvial sediments, zones of scoured bedrock, lags of till veneer and areas of ridged till. Isolated glacial lakes of variable extent were formed by ponding of meltwater, and some fine-grained glacial lake sediments are now characterized by shallow thermokarst lakes. Previous levels of Pelly and Garry lakes are estimated on ice-contact deltas at 190–200 m a.s.l. Active eolian activity can occur adjacent to rivers and lakes, associated with glaciofluvial sediments"--Abstract.
Lien permanent pour cette publication :
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| Ministère/Organisme | Canada. Natural Resources Canada. Geological Survey of Canada. |
|---|---|
| Titre | Reconnaissance surficial geology, Pelly Lake, Nunavut, NTS 66-F, north / [authors: D. A. St-Onge and D. E. Kerr]. |
| Titre de la série | Canadian geoscience map ; 278 |
| 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, 2016. |
| Auteur / Contributeur | St-Onge, Denis A. (Denis Alderic), 1929- Kerr, Daniel Ernest, 1961- |
| Description | 1 map : col. + 1 map information document ([6] p.). |
| ISBN | 978-0-660-04730-0 |
| Numéro de catalogue |
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| Numéro de catalogue du ministère | 298790 |
| Édition | Preliminary version |
| Données cartographiques | Scale 1:125 000 ; Universal Transverse Mercator, zone 14 (W 102°00’--W 100°00'/N 66°00'--N 65°30’) |
| Descripteurs | Geological maps Geomorphology Surficial geology |