Glacial geomorphology of the east-central Canadian Arctic

• Main Author: Angelis, Hernán De
• Format: Dataset
• Language: unknown
• Published: figshare 2013
• Subjects: Geology; FOS Earth and related environmental sciences; Physical Geography; 40602 Glaciology; Arctic; Canada; Hernán; Ice Sheet
• Online Access: https://dx.doi.org/10.6084/m9.figshare.825390; https://figshare.com/articles/dataset/Glacial_geomorphology_of_the_east_central_Canadian_Arctic/825390

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 106 km2. 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. Citation:De Angelis, Hernán. "Glacial geomorphology of the east-central Canadian Arctic." Journal of Maps 3.1 (2007): 323-341.