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TitleReconnaissance surficial geology, Koignuk River, Nunavut, NTS 76-O south
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AuthorKerr, D E
SourceGeological Survey of Canada, Canadian Geoscience Map 354, 2018, 1 sheet, https://doi.org/10.4095/306636
Year2018
PublisherNatural Resources Canada
Documentserial
Lang.English
Maps1 map
Map Info.surficial geology, deposits, landforms, features, 1:125,000
ProjectionUniversal Transverse Mercator Projection, UTM zone 13 (NAD83)
Mediaon-line; digital
RelatedThis publication is related to Geological Survey of Canada; (2016). Surficial geology, Koignuk River, Nunavut, NTS 76-O north and part of NTS 77-A southwest, Geological Survey of Canada, Canadian Geoscience Map no. 227, ed. prelim., Surficial Data Model v.2.1 conversion
File formatreadme
File formatpdf (Adobe® Reader®); rtf; gdb (ESRI® ArcGIS(TM) v.10.x); shp (ESRI® ArcGIS(TM) v.10.x); xml (ESRI® ArcGIS(TM) v.10.x); mxd (ESRI® ArcGIS(TM) v.10.x)
ProvinceNunavut
NTS76O/01; 76O/02; 76O/03; 76O/04; 76O/05; 76O/06; 76O/07; 76O/08
AreaKoignuk River; Bathurst Inlet
Lat/Long WENS-108.0000 -106.0000 67.5000 67.0000
Subjectssurficial geology/geomorphology; snow; permafrost; periglacial features; ice-wedge polygons; patterned ground; postglacial deposits; organic deposits; peat; bogs; colluvial deposits; talus; landslide deposits; alluvial deposits; alluvial fans; terraces; marine deposits; deltaic deposits; littoral deposits; raised beaches; lag deposits; glacial deposits; glacial features; glacial landforms; glaciomarine deposits; beach ridges; glaciofluvial deposits; fans; ice contact deposits; hummocks; eskers; tills; glacial flutings; till plains; drumlinoids; crag and tail; glacial scours; scouring; kettles; meltwater channels; flow trajectories; paleodrainage; moraines; roches moutonnees; kames; glacial striations; ice flow; ice movement directions; sands; gravels; silts; clays; boulders; scarps; glacial history; glaciation; Wisconsinian glacial stage; deglaciation; sea level changes; shoreline changes; depositional environment; Laurentide Ice Sheet; snowpacks; icings; pebbles; cobbles; gravity induced movement; retrogressive thaw slides; diamicton; graviy flow deposits; Cenozoic; Quaternary
Illustrationslocation maps; index maps; aerial photographs
Viewing
Location
 
Natural Resources Canada Library - Ottawa (Earth Sciences)
 
ProgramPermafrost, Climate Change Geoscience
Image
Released2018 05 14
AbstractThe south Koignuk River area is characterized by extensive bedrock outcrops, and isolated marine veneer and blanket units in some coastal lowlands. Discontinuous till veneer and till blanket units, as well as glaciofluvial esker complexes and associated meltwater channels generally trending northwest, are more common in the eastern regions. The area underwent erosion and deposition associated with Laurentide Ice during the late Wisconsin. The main phase of northwestward ice flow is parallel to other ice-flow landforms at a regional scale. In the coastal areas, rare westward-trending ice-flow landforms result from late-phase ablation of the ice sheet during deglaciation. Significant regions of bedrock experienced little or no till deposition whereas in other areas, deposited till units were clearly eroded by meltwater during deglaciation. Below about 200-210 m elevation, much of the region was inundated by the postglacial sea. Marine sediments consist of limited littoral beach and offshore sediments, winnowed till surfaces, and isolated marine and glaciomarine deltas.
Summary(Plain Language Summary, not published)
The map identifies surficial materials and associated landforms left by the retreat of the last glaciers. The surficial geology is based on aerial photograph interpretation and limited legacy field work. This work provides new geological knowledge and improves our understanding of the distribution, nature and glacial history of surficial materials. It contributes to resource assessments and effective land use management.
GEOSCAN ID306636