00000nam 2200000zi 4500 9.915862 CaOODSP 20230830150404 m o d f cr mn||||||||| 221003t20222022oncab ob f000 0 eng d 9780660456751 CaOODSP eng rda CaOODSP eng eng fre n-cn-nu n-cn-nt M183-7/4-2022E-PDF McMartin, Isabelle, 1964- auteur. 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, and P.X. Normandeau. [Ottawa] : Geological Survey Canada, 2022. ©2022 1 online resource (27 pages) : illustrations (some colour), colour maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Preprint, 2816-7872 ; 4 Includes bibliographical references (pages 15-27). "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. Includes abstracts in English and French. Geomorphological mapping Nunavut. Geomorphological mapping Northwest Territories. Glacial landforms Nunavut Maps. Glacial landforms Northwest Territories Maps. Cartographie géomorphologique Nunavut. Cartographie géomorphologique Territoires du Nord-Ouest. Géomorphologie glaciaire Nunavut Cartes. Géomorphologie glaciaire Territoires du Nord-Ouest Cartes. Geological Survey of Canada, issuing body. Preprint (Geological Survey of Canada) 4. (CaOODSP)9.913739 PDF 18.42 MB https://publications.gc.ca/collections/collection_2023/rncan-nrcan/M183-7-4-2022-eng.pdf HTML N/A https://doi.org/10.4095/330867