GEOSCAN Search Results: Fastlink


TitleSurficial geology, Artillery Lake, Northwest Territories, NTS 75-O
AuthorKerr, D E; Knight, R D; Sharpe, D R; Cummings, D I
SourceGeological Survey of Canada, Canadian Geoscience Map 110, 2013, 1 sheet, (Open Access)
PublisherNatural Resources Canada
Maps1 map
Map Info.surficial geology, glacial deposits and landforms, 1:125,000
ProjectionUniversal Transverse Mercator Projection, UTM zone 13 (NAD83)
Mediaon-line; digital
RelatedNRCan photo(s) in this publication
File formatreadme
File formatpdf; rtf; shp; xml; xls; jpg; JPEG2000
ProvinceNorthwest Territories
AreaArtillery Lake; Halbury River; Aylmer Lake
Lat/Long WENS-108.0000 -106.0000 64.0000 63.0000
Subjectssurficial geology/geomorphology; glacial features; glacial deposits; glacial landforms; tills; sands; gravels; frost cracks; glaciolacustrine deposits; glaciofluvial deposits; organic deposits; alluvial deposits; Cenozoic; Quaternary
ProgramGEM: Geo-mapping for Energy and Minerals, GEM Tri-Territorial Information management & databases (Tri-Territorial Surficial Framework)
Released2013 10 02
AbstractThe Artillery Lake map area is characterized by three broad zones based on distribution and nature of surficial sediments. In the northwest, hummocky till with a few north-south trending moraine ridges, and smaller areas of till veneer and bedrock dominate the landscape. The northeast is defined by extensive regions of exposed, scoured bedrock and till veneer. The southern regions consist of a combination of bedrock, till veneer and fluted till blanket. Till is dissected by glaciofluvial corridors consisting of eskers, ice-contact sediments and scoured bedrock. These features record a westward meltwater paleoflow in the south, a northwestward flow in the central regions, and a northwestward to northward flow in the northern regions of the map area. The earliest ice flow, defined by rare striae and subtle sculpted bedrock in the north, was southwestward. The last, dominant ice flow forms a radiating pattern defined by striae, fluted bedrock crag-and-tails and drumlins. Ice flow was westward in the south, to northwestward in the central regions, but locally southwestward, in the northeasternmost region.
Summary(Plain Language Summary, not published)
The Artillery Lake map (NTS 75-O) identifies surficial materials and associated landforms left by the retreat of the last glaciers which covered the area about 9000 years ago. The surficial geology is based on aerial photograph interpretation and fieldwork. This work provides new geological knowledge and improve our understanding of the distribution, nature and glacial history of surficial materials.