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TitleReconnaissance surficial geology, Nose Lake, Nunavut-Northwest Territories, NTS 76-F
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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 446, 2022, 6 pages (1 sheet), https://doi.org/10.4095/329666 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 12 (NAD83)
Mediadigital; on-line
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); xls (Microsoft® Excel® 2010)
ProvinceNunavut; Northwest Territories
NTS76F
AreaNose Lake
Lat/Long WENS-110.0000 -108.0000 66.0000 65.0000
Subjectssurficial geology/geomorphology; Nature and Environment; Science and Technology; organic deposits; raised beaches; deltas; alluvial fans; dunes; landslide deposits; glacial deposits; glacial landforms; glacial features; tills; moraines; proglacial lakes; ice contact deposits; eskers; glacial flutings; scouring; kettles; meltwater channels; paleocurrents; kames; drumlinoids; drumlins; crag and tail; glacial striations; glacial lakes; sands; silts; gravels; boulders; clays; glacial history; glaciation; deglaciation; ice flow; paleodrainage; permafrost; ground ice; periglacial features; thermokarst; ice-wedge polygons; felsenmeer; solifluction; gossans; depositional environment; Twin Jugs Moraine; Wisconsinan Glacial Stage; snowpacks; icings; eolian sediments; colluvial and mass-wasting deposits; alluvial sediments; alluvial floodplain sediments; alluvial terraced sediments; lacustrine sediments; lacustrine deltaic sediments; glaciolacustrine sediments; glaciolacustrine beach sediments; glaciolacustrine deltaic sediments; glaciofluvial sediments; glaciofluvial outwash plain sediments; esker sediments; hummocky tills; ridged tills, moraine; till veneer; till blanket; geological contacts; thermokarst depressions; dune crests; terrace scarps; beach crests; subglacial meltwater corridors; moraine ridges; ice-contact scarps; esker ridges; drumlinoid ridges; drumlin ridges; crag-and-tail ridges; pre-crag ridges; ice-flow directions; fluted drift; fluted bedrock; outcrops; station locations, remote observation; station locations, ground observation; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; index maps; aerial photographs
ProgramClimate Change Geoscience Coastal Infrastructure
Released2022 09 26
AbstractThe oldest regional ice flow in the Nose Lake map area is southwestward. Subsequent northwestward flow is inferred from streamlined bedrock in central and eastern regions. The final and youngest flow was southwestward in these same regions, recorded by an abundance of streamlined landforms in till blanket and bedrock. The western edge of this late active ice lobe is defined by recessional moraines, part of the Twin Jugs moraine, also marking the eastern limit of a broad band of hummocky till from downwasting ice. During deglaciation, short-lived proglacial lakes, identified by raised beaches and deltas, developed within parts of the river valleys of the Mara (420 to 410 m elevation), Hackett (445 to 395 m), and Storak (440 to 415 m). Lakes also formed west of Nose Lake (490 to 430 m elevation) and in the Contwoyto-Pellatt-Ghurka lake basins (470 to 450 m). Orientation of many eskers, associated subglacial meltwater corridors, and sheet drainage is variable, but can be perpendicular to local ice flow.
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 fieldwork. This work provides new geological knowledge and improves our understanding of the distribution, nature and glacial history of surficial materials. The map supports informed decision making for resource assessments, development, and effective land use management.
GEOSCAN ID329666

 
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