| Title | The Slave Geological Province: an archetype of glaciated Shield terrain |
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| Author | Wolfe, S A ; Kerr,
D E; Morse, P D |
| Source | Landscapes and landforms of western Canada; by Slaymaker, O (ed.); World Geomorphological Landscapes 2016 p. 77-86, https://doi.org/10.1007/978-3-319-44595-3 4 |
| Image |  |
| Year | 2016 |
| Alt Series | Earth Sciences Sector, Contribution Series 20150159 |
| Publisher | Springer International Publishing |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf (Adobe® Reader®) |
| Province | Northwest Territories; Nunavut |
| NTS | 75I; 75J; 75K; 75L; 75M; 75N; 75O; 75P; 76; 85I; 85J; 85K; 85N; 85O; 85P; 86A; 86B; 86C; 86F; 86G; 86H; 86I; 86J; 86K; 86N; 86O; 86P |
| Area | Great Slave Lake; Yellowknife; Coronation Gulf; Tree River; Bathurst Inlet |
| Lat/Long WENS | -118.0000 -104.0000 68.0000 62.0000 |
| Subjects | surficial geology/geomorphology; environmental geology; economic geology; geochemistry; Nature and Environment; glacial history; glaciation; Wisconsinian glacial stage; ice flow; deglaciation; glacial
lakes; emergence; landslides; erosional surfaces; sand wedges; glacial deposits; glacial landforms; glacial features; tills; outwash; eskers; paleocurrents; crag and tail; drumlinoids; raised beaches; postglacial deposits; marine sediments; organic
deposits; peatlands; sands; permafrost; ground ice; periglacial features; creep; massive ice; ice wedges; ice-wedge polygons; bedrock geology; lithology; metamorphic rocks; metavolcanic rocks; metasedimentary rocks; igneous rocks; intrusive rocks;
granitic rocks; mining activities; mines; physiography; climate; boreholes; isotopic studies; oxygen isotopes; lake water geochemistry; subsidence; Archean; Canadian Shield; Slave Province; Tundra Shield Ecozone; Glacial Lake McConnell; ice-flow
directions; glaciofluvial sediments; glaciolacustrine sediments; glaciomarine sediments; glaciofluvial outwash fan sediments; glaciofluvial outwash plain sediments; hummocky tills; limit of submergence, marine; limit of submergence, glaciolacustrine;
till veneer; Development; Phanerozoic; Cenozoic; Quaternary; Precambrian |
| Illustrations | geoscientific sketch maps; photographs; lithologic sections; plots |
| Program | Climate Change Geoscience Land-based Infrastructure |
| Released | 2016 12 02 |
| Abstract | The Slave Geological Province of the Tundra Shield is a Late Archean craton extending from the north shore of Great Slave Lake in the Northwest Territories to the Coronation Gulf in Nunavut. Underlain
by metavolcanic and metasedimentary rocks intruded by granitoid plutons, the region is rich in gold, base metals, and diamonds and hosts numerous historic, active, and prospective mines. Most recently glaciated in the Late Wisconsinan, till and
glacifluvial sediments form the most prevalent surficial materials. Glacial landscape features reflect complex ice flow patterns recording several different events. Raised post-glacial marine sediments are significant in the north along the
Coronation Gulf at elevations below 200 masl, whereas glacilacustrine sediments related to glacial Lake McConnell are abundant in the south. Ground ice in glacigenic sediments has been preserved since deglaciation as much of the region also lies well
within the zone of continuous permafrost. Segregated ice occurs separately within glacimarine and glacilacustrine sediments, and polygonal terrain is abundant on outwash sediments. Glacially derived ground ice includes buried glacial ice within
glacifluvial outwash deposits and buried glacial and meltwater ice within eskers. Sediment-rich ice has also been encountered within hummocky till terrain during mine development operations. Surficial features attributed to partial thawing, and creep
of massive ground ice, are regionally apparent. Although massive ice has been encountered in only a few locations to date, ground ice may be common within this glaciated region of the Tundra Shield. |
| Summary | (Plain Language Summary, not published)
This article provides a description of the Slave Geological Province of the Tundra Shield as an example of landscapes of Western Canada. It is a Late
Archean craton extending from the north shore of Great Slave Lake in the Northwest Territories to the Coronation Gulf in Nunavut. It was glaciated during the late Wisconsin. Till and glaciofluvial sediments form the most prevalent surface materials,
with glacial landscape features recording several different events as part of a complex ice-flow pattern. Ground ice has been preserved since deglaciation as the region also lies well within the zone of continuous permafrost. Although massive ice has
been encountered in only a few locations to date, buried ice may be common within this glaciated region of the Tundra Shield. |
| GEOSCAN ID | 296846 |
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