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TitleReconnaissance surficial geology, Bebensee Lake, Northwest Territories-Nunavut, NTS 86-M
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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorKerr, D E
SourceGeological Survey of Canada, Canadian Geoscience Map 451, 2022, 1 sheet, https://doi.org/10.4095/329456 Open Access logo Open Access
LinksSurficial geology map collection
LinksCollection de données de géologie de surface
Image
Year2022
PublisherNatural Resources Canada
Documentserial
Lang.English
Maps1 map
Map Info.surficial geology, sediments, landforms, features, 1:125,000
ProjectionUniversal Transverse Mercator Projection, UTM zone 11 (NAD83)
Mediaon-line; digital
RelatedThis publication is related to the following publications
File formatreadme
File formatpdf; 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)
ProvinceNorthwest Territories; Nunavut
NTS86M
AreaBebensee Lake; Great Bear Lake
Lat/Long WENS-120.0000 -118.0000 68.0000 67.0000
Subjectssurficial geology/geomorphology; Science and Technology; Nature and Environment; permafrost; ground ice; periglacial features; thermokarst; patterned ground; ice-wedge polygons; kettles; landforms; scarps; postglacial deposits; organic deposits; alluvial fans; landslides; glacial deposits; glacial landforms; glacial features; glacial lakes; ice contact deposits; tills; moraines; moraine, ribbed; moraine, interlobate and kame; glacial scours; glacial flutings; meltwater channels; paleocurrents; eskers; beach ridges; kames; glacial striations; sands; silts; gravels; boulders; clays; depositional environment; glacial history; glaciation; Wisconsinian glacial stage; ice flow; deglaciation; remote sensing; photogrammetric techniques; airphoto interpretation; Ancestral Great Slave Lake; Glacial Lake McConnell; Glacial Lake Coppermine; Laurentide Ice Sheet; eolian sediments; alluvial sediments; alluvial floodplain sediments; alluvial terraced sediments; lacustrine sediments; lacustrine deltaic sediments; glaciolacustrine sediments; glaciolacustrine beach sediments; glaciolacustrine deltaic sediments; glaciolacustrine littoral sediments; glaciolacustrine veneer; glaciofluvial sediments; glaciofluvial outwash plain sediments; glaciofluvial terraced sediments; glaciofluvial outwash fan sediments; esker sediments; hummocky tills; ridged tills, moraine; streamlined tills; till veneer; till blanket; geological contacts; landslide scars; retrogressive thaw flows; thermokarst depressions; terrace scarps; beach crests; limit of submergence, glaciolacustrine; moraine ridges; ice-contact scarps; ice-flow directions; drumlinoid ridges; drumlin ridges; crag-and-tail ridges; pre-crag ridges; outcrops; station locations, remote observation; subglacial meltwater corridors; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; index maps; aerial photographs
ProgramClimate Change Geoscience Program Coordination - Climate Change Science
Released2022 11 18
AbstractPreliminary surficial geology, based on airphoto interpretation and limited legacy field data of the Bebensee Lake map area, records a complex glacial landscape. Highly streamlined till, till blanket, hummocky till, moraine complex, and ridged till are dominant units. Glaciofluvial sand and gravel form eskers, subglacial meltwater corridors, ice-contact deposits, and outwash plains. Fine-grained glaciolacustrine sediments in the south occur predominantly in lowlands below 250 m elevation, relating to glacial Lake McConnell. Multiple lobes of Laurentide ice glaciated the area. Relict glacial landforms record older westward to west-southwestward ice flow. In the southeast, these are strongly overprinted by subsequent north-oriented flutings, decreasing in intensity northward, and originating from a lobe south of the map area. Streamlined till landforms, relating to a third lobe originating east and northeast of the map region, indicate the last ice flow was dominantly westward in east-central regions, and southwestward in the north and west. During deglaciation, widespread hummocky till was deposited, and major moraines and esker complexes formed along the margins of two ice lobes.
Summary(Plain Language Summary, not published)
The Bebensee Lake map (NTS 86-M) identifies surficial materials and associated landforms left by the retreat of the last glaciers. The surficial geology is based on aerial photograph interpretation, with striations from a previous publication. This work provides new geological knowledge and improves our understanding of the distribution and nature of the surficial geology cover, and the glacial history of this region. It contributes to resource assessments and effective land use management.
GEOSCAN ID329456

 
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