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TitlePeriglacial and permafrost geology, Clyde River, Baffin Island, Nunavut
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AuthorSmith, I R; Irvine, M L; Bell, T
SourceGeological Survey of Canada, Canadian Geoscience Map 57, 2012, 1 sheet; 1 CD-ROM, https://doi.org/10.4095/289602
Year2012
PublisherNatural Resources Canada
Editionprelim.
Documentserial
Lang.English
Maps1 map
Map Info.surficial geology, permafrost, 1:10,000
ProjectionUniversal Transverse Mercator Projection, zone 19 (NAD83)
MediaCD-ROM; paper; on-line; digital
File formatreadme
File formatpdf; rtf; shp; xml; jpg; JPEG2000
ProvinceNunavut
NTS27F/08NW
AreaClyde River; Baffin Island
Lat/Long WENS-68.6792 -68.4500 70.5097 70.4556
Subjectssurficial geology/geomorphology; permafrost; ground ice; periglacial features; thermokarst; glacial features; glacial deposits; glacial landforms; moraines; Cenozoic; Quaternary
Illustrationsphotographs; cross-sections
ProgramBuilding Resilience to Climate Change in Canadian Communities, Climate Change Geoscience
Image
Released2012 03 06
AbstractGeological mapping of periglacial landforms and permafrost features was undertaken as part of a community-scale assessment of how different aspects of the physical environment pose risks to existing and future infrastructure development, and how climate change may further alter infrastructure vulnerability. Airphoto and ground surveys were used to identify and map gelifluction lobes (Fig. 1), nivation hollows (Fig. 2), thermokarst depressions (Fig. 3), and ice wedges (Fig. 4). Additional insights were gained by drilling and analyzing 14 permafrost cores (0.19-2.83 m long; Irvine, 2011). Ice-rich, raised marine silty-sand deposits, containing saline permafrost, underlie much of the present town and airport. Surficial sediments in areas where new community developments are taking place, upslope from the coastal terraced regions, appear to potentially be much less affected by ground ice and saline permafrost, but are more subject to surface slope deformation, and the wind drifting and melting of snow in the lee sides of prominent recessional moraines.
GEOSCAN ID289602