| Title | Surficial geology, Yellowknife area, Northwest Territories, parts of NTS 85-J/7, NTS 85-J/8, NTS 85-J/9 and NTS 85-J/10 |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Wolfe, S A ; Kerr,
D E |
| Source | Geological Survey of Canada, Canadian Geoscience Map 183, 2014, 1 sheet, https://doi.org/10.4095/293725  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 | 2014 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Maps | 1 map |
| Map Info. | surficial geology, surficial deposits and landforms, 1:25,000 |
| Projection | Universal Transverse Mercator Projection, UTM zone 11 (NAD83) |
| Media | digital; on-line |
| Related | NRCan photo(s) in this
publication |
| File format | readme
|
| File format | pdf; rtf; xml; xls; shp |
| Province | Northwest Territories |
| NTS | 85J/07NE; 85J/08NW; 85J/08NE; 85J/09SE; 85J/09SW; 85J/10SE |
| Area | Yellowknife; Yellowknife Bay |
| Lat/Long WENS | -114.5667 -114.2000 62.7250 62.3833 |
| Subjects | surficial geology/geomorphology; Nature and Environment; glacial deposits; glacial features; landforms; terrain types; organic deposits; alluvial deposits; glaciolacustrine deposits; glaciofluvial
deposits; Holocene; Pleistocene; Slave Province; Cenozoic; Quaternary |
| Illustrations | location maps |
| Program | Climate Change Geoscience |
| Released | 2014 04 09 |
| Abstract | Yellowknife Bay was covered by the Laurentide Ice Sheet, with generally southwestward ice flow, during the Late Wisconsinan glaciation until about 10,000 BP. With ice retreat, Glacial Lake McConnell
inundated the area, which was replaced by ancestral Great Slave Lake as water levels declined. Surficial geology includes widely-exposed bedrock, and a dominance of fine-grained sediments within low-lying areas deposited within deep glaciolacustrine
and shallow post-glacial lake settings. Other sediments include extensive subaqueous outwash deposits of sand and gravel, re-sorted at the surface by wave-action. Wave-washed bedrock is also common, with occasional perched boulders on bedrock and
little if any exposed till. Vegetation consists mainly of open to dense forests of black spruce, jack pine, and paper birch mixed with marshes, fens and peat bogs in low-lying areas. Permafrost is extensively discontinuous in the area, occurring
within most organic deposits as well as alluvial and glaciolacustrine sediments. |
| Summary | (Plain Language Summary, not published)
Yellowknife Bay was covered by the Laurentide Ice Sheet, with generally southwestward ice flow, during the late Wisconsinan glaciation until about 10,000
BP. With ice retreat, Glacial Lake McConnell inundated the area, which was replaced by ancestral Great Slave Lake as water levels declined. Surficial geology includes widely-exposed bedrock, and a dominance of fine-grained sediments within low-lying
areas deposited within deep glaciolacustrine and shallow post-glacial lake settings. Other sediments include extensive subaqueous outwash deposits of sand and gravel, re-sorted at the surface by wave-action. Wave-washed bedrock is also common, with
occasional perched boulders on bedrock and little if any exposed till. Vegetation consists mainly of open to dense forests of black spruce, jack pine, and paper birch mixed with marshes, fens and peat bogs in low-lying areas |
| GEOSCAN ID | 293725 |
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