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Glacial geomorphology of the east-central Canadian Arctic
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology. (Paleoglaciology Group)
2007 (English)In: Journal of Maps, ISSN 1744-5647, Vol. v2007, 323-341 p.Article in journal (Refereed) Published
Abstract [en]

This article describes palaeoglaciological mapping of the portion of the Canadian Arctic formerly covered by north-easternmost Laurentide Ice Sheet. The mapped area stretches between the meridians 106°W and 61°W, and the parallels 60°N and 75°N, embracing an area of 3.19 x 10^6 km^2. The work was focused on determining the location of landforms that are required as input for a glaciological inversion model, i.e. glacial lineations, eskers, moraine ridges, ribbed moraine and De Geer moraines; and forms the basis of a reconstruction of the geometry and evolution of palaeo-ice streams in this portion of the Laurentide Ice Sheet. Emerged areas were mapped through the geomorphological interpretation of Landsat 7 Enhanced Thematic Mapper Plus (ETM+) satellite images. Information on striae and other minor indicators of glacial activity were extracted from maps and reports by the Geological Survey of Canada, published articles and, on a few locations, by the author's own observations. Information on landforms located on some submerged areas where extracted from publicly available sonar surveys. All data were digitally processed within a Geographical Information System and stored in a spatially enabled database. The results are presented as a printable map at 1:2,400,000 scale.

Place, publisher, year, edition, pages
2007. Vol. v2007, 323-341 p.
Keyword [en]
Canada, Arctic, geomorphology, quaternary geology, palaeoglaciology
National Category
URN: urn:nbn:se:su:diva-21142ISI: 000207065000005OAI: diva2:187668
Available from: 2007-12-05 Created: 2007-12-05 Last updated: 2011-01-11Bibliographically approved

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De Angelis, Hernán
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Department of Physical Geography and Quaternary Geology

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