GEOSCAN Search Results: Fastlink

GEOSCAN Menu


TitleThe Slave Geological Province: an archetype of glaciated Shield terrain
AuthorWolfe, S A; Kerr, D E; Morse, P D
SourceLandscapes 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
Year2016
Alt SeriesEarth Sciences Sector, Contribution Series 20150159
PublisherSpringer International Publishing
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf (Adobe® Reader®)
ProvinceNorthwest Territories; Nunavut
NTS75I; 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
AreaGreat Slave Lake; Yellowknife; Coronation Gulf; Tree River; Bathurst Inlet
Lat/Long WENS-118.0000 -104.0000 68.0000 62.0000
Subjectssurficial 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; continuous permafrost; segregated ice; buried ice; hummocky tills; limit of submergence, marine; limit of submergence, glaciolacustrine; active layer; pore ice; till veneer; geological hazards; permafrost degradation; terrain sensitivity; landscape evolution; meltwater; development; active layer detachments; thaw slides; Phanerozoic; Cenozoic; Quaternary; Precambrian
Illustrationsgeoscientific sketch maps; photographs; lithologic sections; plots
ProgramLand-based Infrastructure, Climate Change Geoscience
Released2016 12 02
AbstractThe 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 ID296846