Surficial geology, Curtis Lake south, Nunavut, NTS 56-I south / [authors, I. McMartin, J.E. Campbell, and L.A. Dredge].: M183-1/294-2016E-PDF
"The Curtis Lake south map area is extensively covered by streamlined till, interspersed by bedrock uplands, and by linear glacial troughs in the southwest. Large crag-and-tail landforms apparent on the DEM converge north-northeastward, associated with a major ice stream during the last glaciation. Major changes in ice-flow directions and complex retreat patterns characterized deglaciation. Retreat of ice margins associated with cold-based ice started southward and cold-based, as recorded by abundant lateral ice-marginal meltwater channels found mainly in the north part of the map area. Late during deglaciation, two major ice-flow shifts occurred as a result of drawdown into marine embayments: an eastward flow towards Repulse Bay in the east, and a flow reversal towards Wager Bay in the southwest. Late striations, superimposed streamlined landforms, eskers, subglacial meltwater corridors and channels attest to a warm-based deglaciation in these areas. In the central uplands, retreat to remnant ice masses centred over many of the large lake basins continued largely cold-based, preserving the northward streamlined glacial landscape. The postglacial sea inundated the lowest valleys in the southwest up to 120 m a.s.l."--Abstract.
Permanent link to this Catalogue record:
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| Department/Agency | Canada. Natural Resources Canada. Geological Survey of Canada. |
|---|---|
| Title | Surficial geology, Curtis Lake south, Nunavut, NTS 56-I south / [authors, I. McMartin, J.E. Campbell, and L.A. Dredge]. |
| Series title | Canadian geoscience map ; 294 |
| Publication type | Series - View Master Record |
| Language | [English] |
| Format | Electronic |
| Electronic document |
|
| 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. |
| Publishing information | [Ottawa] : Natural Resources Canada, 2017. |
| Author / Contributor | McMartin, Isabelle, 1964- Campbell, Janet E. M., 1963- Dredge, L. A. |
| Description | 1 map : col. + 1 map information document ([7] p.). |
| ISBN | 978-0-660-06600-4 |
| Catalogue number |
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| Departmental catalogue number | 299346 |
| Edition | Prelim. |
| Cartographic data | Scale 1:100 000 ; Universal Transverse Mercator, zone 16 (W 90°00’--W 88°00'/N 66°30'--N 66°00’) |
| Subject terms | Geological maps Geomorphology Surficial geology |
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