| Title | Reconnaissance surficial geology, Clarke River, Northwest Territories, NTS 65-M north |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Kerr, D E |
| Source | Geological Survey of Canada, Canadian Geoscience Map 440, 2022, 1 sheet, https://doi.org/10.4095/329416  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, features, 1:125,000 |
| Projection | Universal Transverse Mercator Projection, UTM zone 13 (NAD83) |
| Media | on-line; digital |
| Related | This publication is related to the following
publications |
| File format | readme
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| 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®) |
| Province | Northwest Territories |
| NTS | 65M/09; 65M/10; 65M/11; 65M/12; 65M/13; 65M/14; 65M/15; 65M/16 |
| Area | Clarke River |
| Lat/Long WENS | -104.0000 -102.0000 64.0000 63.5000 |
| Subjects | surficial geology/geomorphology; Science and Technology; Nature and Environment; glacial history; Wisconsinian glacial stage; glaciation; ice flow; deglaciation; postglacial deposits; organic deposits;
dunes; alluvial fans; landslides; glacial deposits; glacial landforms; glacial features; ice contact deposits; tills; moraines; meltwater channels; paleocurrents; eskers; kettles; kames; drumlinoids; crag and tail; glacial flutings; glacial lakes;
landforms; scarps; escarpments; dunes; sea level changes; submergence; silts; sands; gravels; clays; permafrost; periglacial features; thermokarst; ice wedges; patterned ground; solifluction; depositional environment; Keewatin Ice Divide; Dubawnt
Lake Ice Stream; Thelon Sandstone Formation; eolian sediments; alluvial sediments; alluvial floodplain sediments; alluvial terraced sediments; lacustrine sediments; lacustrine deltaic sediments; glaciolacustrine sediments; glaciolacustrine deltaic
sediments; glaciolacustrine beach sediments; glaciolacustrine veneer; glaciofluvial sediments; glaciofluvial outwash plain sediments; glaciofluvial terraced sediments; glaciofluvial veneer; glaciofluvial blanket; esker sediments; ridged tills,
moraine; streamlined tills; till veneer; till blanket; ice-flow directions; terrace scarps; beach crests; landslide scars; solifluction lobes; dune crests; limit of submergence, glaciolacustrine; moraine ridges; ice-contact scarps; drumlinoid ridges;
drumlin ridges; crag-and-tail ridges; outcrops; ice streams; Phanerozoic; Cenozoic; Quaternary |
| Illustrations | location maps; ndex maps; aerial photographs |
| Program | Climate Change
Geoscience Permafrost |
| Released | 2022 03 01 |
| Abstract | The Clarke River map area (north half) comprises isolated areas of glacially and meltwater scoured bedrock, till veneers and blankets, locally fluted, and strongly fluted (mega-scale glacial lineations)
streamlined till in the northeast. Ridged till may overlie fluted till blanket and streamlined till. Glaciofluvial esker complexes and associated meltwater outwash sediments trend westward (some may parallel pre-glacial valleys), southwestward, and
northwestward. Glaciolacustrine sediments are a minor component. An early regional warm-based diverging southwestern and southern ice flow is well preserved in the central regions across the map area. The youngest late deglacial ice flows, in the
extreme southwest and broader northeast region, are both northwesterly. The latter represents the Dubawnt Lake ice stream. During ice retreat, ridged till was deposited with minor moraines and larger recessional moraines locally. Ponding meltwater
formed pro-glacial lakes with deltas, beaches, and trim lines from 355 m elevation, in the southwest, to 155 m, in the northeast. |
| 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 fieldwork. 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 ID | 329416 |
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