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TitleReconnaissance surficial geology, Carey Lake, Northwest Territories, NTS 65-L
AuthorMaynard, D; Kerr, D E
SourceGeological Survey of Canada, Canadian Geoscience Map 136, 2014, 1 sheet,
PublisherNatural Resources Canada
Maps1 map
Map Info.surficial geology, glacial deposits and landforms, 1:125,000
ProjectionUniversal Transverse Mercator Projection, zone 13 (NAD83)
Mediaon-line; digital
File formatreadme
File formatpdf; rtf; shp; xml; xls; jpg; JPEG2000
ProvinceNorthwest Territories
AreaCarey Lake; Sid Lake; Gravel Hill Lake; Mary Lake; Oman Lake; Barlow Lake; Big Rocky Lake; Little Rocky Lake; Markham Lake; Ecklund Lake; Mosquito Lake; Nicholson Lake
Lat/Long WENS-104.0000 -102.0000 63.0000 62.0000
Subjectssurficial geology/geomorphology; glacial features; glacial deposits; glacial landforms; tills; sands; gravels; glaciolacustrine deposits; glaciofluvial deposits; organic deposits; alluvial deposits; colluvial deposits; eolian deposits; lacustrine deposits; moraines; Cenozoic; Quaternary
ProgramGeomapping for Energy & Minerals (GEM) - Geo-mapping Frontiers, GEM: Geo-mapping for Energy and Minerals
Released2014 05 12 (13:00)
AbstractReconnaissance mapping, through aerial photograph interpretation and limited legacy field data in the Carey Lake map area, provides an understanding of surficial sediments and glacial history. The last major ice flow was predominantly westward, as indicated by crag-and-tails, drumlins, and other glacially fluted landforms occurring throughout the map area. Exposed granitic and gneissic bedrock, till veneer, and fluted till dominate the topographically lower region east of Mosquito, Mary, and Gravel Hill lakes. To the west of this series of lakes, hummocky till, till blanket, and large glaciofluvial corridors characterize the landscape. In the shallow basins of these same lakes, fine-grained glaciolacustrine sediments and raised beaches occur up to 320-330 m elevation, and are associated with glacial Lake Thelon. Other glaciolacustrine sediments, found around Carey Lake, as well as to the southwest and southeast, locally overlying areas of ridged till, may relate to an extension of glacial Lake Thelon, an isolated glacial lake, or possibly a phase of glacial Lake Kazan. Areas of organic deposits are presumably underlain by glaciolacustrine sediments, reflecting the uncertainty of glaciolacustrine sediment thickness and extent.
Summary(Plain Language Summary, not published)
The Carey Lake map (NTS 65-L) identifies surficial materials and associated landforms left by the retreat of the last glaciers which covered the area about 8500 years ago. The surficial geology is based on aerial photograph interpretation and limited previous fieldwork. This work provides new geological knowledge and improves our understanding of the distribution, nature and glacial history of surficial materials.