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TitleHigh-resolution mapping of glacial landscapes in central mainland Nunavut using ArcticDEM data and Landsat 8 imagery
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorMcMartin, IORCID logo; Godbout, P -M; Campbell, J E; Tremblay, TORCID logo; Behnia, P
SourceGeological Survey of Canada, Scientific Presentation 121, 2021, 1 sheet, Open Access logo Open Access
PublisherNatural Resources Canada
Meeting2020 NWT and Nunavut Geoscience Forum; November 23, 2020
Mediaon-line; digital
RelatedThis publication is related to the following publications
File formatpdf
NTS46D; 46E; 46K; 46K/04; 46K/05; 46L; 46M; 46N/04; 46N/05; 55; 56; 65A; 65B; 65G; 65H; 65I; 65J; 65O; 65P; 66A; 66B; 66G; 66H; 66I; 66J; 66O; 66P
AreaHudson Bay; Wager Bay; Chesterfield Inlet
Lat/Long WENS-100.0000 -85.6667 68.0000 60.0000
Subjectssurficial geology/geomorphology; geophysics; Nature and Environment; Science and Technology; glacial landforms; glacial features; crag and tail; moraines; moraine, de geer; eskers; meltwater channels; ice margins; roches moutonnees; glacial striations; relative ages; glacial history; glaciation; ice sheets; ice flow; deglaciation; ice retreat; remote sensing; satellite imagery; Laurentide Ice Sheet; ArcticDEM; Landsat 8; Geographic data; Geographic information systems; moraine ridges; esker ridges; limit of submergence, marine; ice-flow directions; subglacial meltwater corridors; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; geoscientific sketch maps; photographs; satellite images; digital elevation models
ProgramGEM2: Geo-mapping for Energy and Minerals Rae Province, Synthesis of glacial history
Released2021 01 25
A new glacial geomorphology map covers approximately 415,000 km2 in a core region of the Laurentide Ice Sheet in Nunavut. The compilation builds on recent and legacy maps and is supplemented by visual digitization of glacigenic features using high-resolution digital elevation data (ArcticDEM) and Landsat 8 images. From this unprecedented, detailed inventory of >156,000 features and >14,000 field observations, we identify various glacial landsystems, many of which are entirely new and others that are significantly modified or updated. This poster provides an overview of the mapping methods, examples of mapped features and interpreted landsystems and a list of related publications.
Summary(Plain Language Summary, not published)
This poster synthesizes the compilation of a comprehensive database of former glacial landscapes in a large area of mainland Nunavut as part of the GEM-2 Rae Synthesis of Glacial History and Dynamics Activity. The poster highlights the methods developed to build the digital maps, the various data sources and the interpretations of the glacial terrains. The work was undertaken to provide new geological knowledge on the history of former glacial events and help understand glacial transport across major glacial landscapes of northern regions of Canada. The findings will support informed decision making for resource exploration and land use management.

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