| Title | Reconnaissance surficial geology, Koignuk River, Nunavut, NTS 76-O south |
| 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 354, 2018, 1 sheet, https://doi.org/10.4095/306636  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 | 2018 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Maps | 1 map |
| Map Info. | surficial geology, deposits, 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
|
| File format | pdf (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) |
| Province | Nunavut |
| NTS | 76O/01; 76O/02; 76O/03; 76O/04; 76O/05; 76O/06; 76O/07; 76O/08 |
| Area | Koignuk River; Bathurst Inlet |
| Lat/Long WENS | -108.0000 -106.0000 67.5000 67.0000 |
| Subjects | surficial geology/geomorphology; Nature and Environment; 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; Cenozoic; Quaternary |
| Illustrations | location maps; index maps; aerial photographs |
| Program | Climate Change
Geoscience Permafrost |
| Released | 2018 05 14 |
| Abstract | The 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 ID | 306636 |
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