| Title | Surficial geology, Abitau Lake, Northwest Territories, NTS 75-B |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Dyke, A S; Campbell, J E; Lauzon, G |
| Source | Geological Survey of Canada, Canadian Geoscience Map 350, 2022, 1 sheet, https://doi.org/10.4095/330072  Open Access |
| Links | Surficial geology map collection
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| Links | Collection de données de géologie de surface
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| Image |  |
| Year | 2022 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Maps | 1 map |
| Map Info. | surficial geology, sediments, landforms and features, 1:100,000 |
| Projection | Universal Transverse Mercator Projection, UTM zone 13 (NAD83) |
| Media | on-line; digital |
| Related | NRCan photo(s) in this
publication |
| Related | This publication is related to the following
publications |
| File format | readme
|
| File format | pdf; 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) |
| Province | Northwest Territories |
| NTS | 75B |
| Area | Abitau Lake; Scott Lake |
| Lat/Long WENS | -108.0000 -106.0000 61.0000 60.0000 |
| Subjects | surficial geology/geomorphology; geochronology; Science and Technology; Nature and Environment; postglacial deposits; organic deposits; alluvial fans; glacial features; glacial deposits; glacial
landforms; ice contact deposits; tills; moraines; boulder fields; lag deposits; boulders; kettles; meltwater channels; paleocurrents; kames; eskers; crag and tail; glacial flutings; roches moutonnees; glacial striations; sands; gravels; silts; clays;
glacial lakes; glacial erosion; permafrost; ground ice; periglacial features; thermokarst; ice-wedge polygons; glacial history; glaciation; Wisconsinian glacial stage; ice flow; deglaciation; shoreline changes; raised beaches; paleodrainage;
radiometric dating; radiocarbon dates; sedimentary structures; depositional environment; pebble lithology; Canadian Shield; Rae Province; Churchill Province; Dubawnt Supergroup; Thelon Formation; Pitz Formation; Keewatin Ice Divide; Glacial Lake
McConnell; alluvial sediments; alluvial floodplain sediments; alluvial terraced sediments; glaciolacustrine sediments; glaciolacustrine beach sediments; glaciolacustrine deltaic sediments; glaciolacustrine nearshore sediments; glaciolacustrine
veneer; glaciolacustrine blanket; glaciofluvial sediments; glaciofluvial outwash plain sediments; glaciofluvial terraced sediments; glaciofluvial outwash fan sediments; glaciofluvial hummocky sediments; glaciofluvial veneer; esker sediments; hummocky
tills; till veneer; till blanket; moraine ridges; geological contacts; thermokarst depressions; reworked sediments; terrace scarps; subglacial meltwater corridors; crevasse ridges; drumlinoid ridges; drumlin ridges; ice-flow directions; outcrops;
station locations, remote observation; station locations, ground observation; sample locations; streamlined tills; Phanerozoic; Cenozoic; Quaternary |
| Illustrations | location maps; index maps; geoscientific sketch maps; tables; photographs |
| Program | GEM2: Geo-mapping for Energy and Minerals South Rae Province Bedrock/Surficial geology |
| Released | 2022 07 05 |
| Abstract | The Abitau Lake map area lies in the Rae Province of the Canadian Shield. Quaternary deposits are extensive and thick, with bedrock outcrop concentrated in the northwest and southwest. Till is
extensively streamlined to the west-southwest by late deglacial ice flow from the Keewatin Ice Divide. The region is incised by west-southwest flowing subglacial meltwater corridors that extend across the map area, spaced 5 to 15 km apart. The ice
flow chronology (Figure 1) is recorded both in the landforms and in the striae record. Rare measurements record an old flowset oriented northwest-southeast. Well defined indicators in cross-cutting relationships reveal a regional clockwise rotation
in ice-flow directions evolving from an old southward to a late deglacial westward flow. Short-lived proglacial lakes, as evidenced by wave-cut scarps, terraced outwash, ice-contact deltas, and patches of glacial lake sediments, occupied a
paleodrainage area not only of Hudson Bay but possibly also the headwaters of the Mackenzie River. |
| Summary | (Plain Language Summary, not published)
The Abitau Lake map area (NTS 75B) identifies surficial materials and associated landforms left by the retreat of the last remnants of the Laurentide Ice
Sheet which covered the area until about 8,500 years ago. The surficial geology is based on the interpretation of air photos, satellite imageries, and fieldwork. This work was undertaken to provide new geological knowledge and improve our
understanding of the distribution, nature and glacial history of surficial materials. This work will support informed decision making for resource development and land use. |
| GEOSCAN ID | 330072 |
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