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Glacial geomorpholo...
Glacial geomorphology of the east-central Canadian Arctic
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- De Angelis, Hernán (author)
- Stockholms universitet,Institutionen för naturgeografi och kvartärgeologi (INK),Paleoglaciology Group
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(creator_code:org_t)
- 2007
- 2007
- English.
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In: Journal of Maps. - 1744-5647. ; v2007, s. 323-341
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Abstract
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- 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.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
Keyword
- Canada
- Arctic
- geomorphology
- quaternary geology
- palaeoglaciology
- Quaternary geology
- Kvartärgeologi
Publication and Content Type
- ref (subject category)
- art (subject category)
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