High-resolution mapping of glacial landscapes in the north-central portion of the Laurentide Ice Sheet in Nunavut and Northwest Territories / I. McMartin, J.E. Campbell, P.-M. Godbout, P. Behnia, T. Tremblay,... : M183-7/4-2022E-PDF

"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 (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. These include ice streams, palimpsest ice flows, and areas where basal ice thermal regimes fluctuated between cold-based and warm-based. The GIS data comprise glacial features mapped at original and generalized scales, standardized field datasets and interpreted glacial landsystems. These comprehensive georeferenced datasets can be used to reconstruct the glacial history in the interior portion of the Laurentide Ice Sheet in Nunavut and Northwest Territories and to identify distinct glacial sediment transport paths for applications to mineral exploration"--Abstract, page 1.

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