GEOSCAN Search Results: Fastlink

GEOSCAN Menu


TitleReconnaissance surficial geology, Lynx Lake, Northwest Territories, NTS 75-J
DownloadDownloads
AuthorKerr, D E; Knight, R D; Sharpe, D R; Cummings, D I
SourceGeological Survey of Canada, Canadian Geoscience Map 139, 2014, 1 sheet, https://doi.org/10.4095/293624
Year2014
PublisherNatural Resources Canada
Editionprelim.
Documentserial
Lang.English
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
NTS75J
AreaLynx Lake; Sled Lake; Tent Lake; Howard Lake; Catholic Lake; Sandy Lake; Whitefish Lake; Garde Lake; Zucker Lake
Lat/Long WENS-108.0000 -106.0000 63.0000 62.0000
Subjectssurficial geology/geomorphology; glacial features; glacial deposits; glacial landforms; tills; sands; gravels; frost cracks; glaciolacustrine deposits; glaciofluvial deposits; organic deposits; alluvial deposits; eolian deposits; Cenozoic; Quaternary
ProgramGEM Tri-Territorial Information management & databases (Tri-Territorial Surficial Framework), GEM: Geo-mapping for Energy and Minerals
Image
Released2014 05 12 (13:00)
AbstractThe Lynx Lake map area is characterized by three transitional zones based on distribution and nature of surficial sediments. In the southwest, large areas of bedrock and till veneer predominate. Northwest and central regions exhibit an increase in overburden cover, notably fluted till blanket. The northeast and southeast map areas have a greater cover of till veneer, till blanket which is fluted and drumlinized, and hummocky till. The later may contain large, subdued moraine ridges of variable orientation. The entire map area is dissected by glaciofluvial corridors consisting of eskers, ice-contact sediments and scoured bedrock, trending westward in the north and west-southwestward in the central and southern regions. The earliest ice flow, inferred from rare striae and subtle fluted landforms in the eastern half of the map area, was southwestward. The last dominant ice flow was westward in the north, grading slightly west-southwestward, in the central and southern regions. In the Whitefish Lake-Garde Lake area, as well as Lynx Lake-Howard Lake area, glaciolacustrine beaches and washing limits are developed on the flanks of some drumlinoids and glaciofluvial sediments. They occur up to 25-30 m above current lake levels but the extent of these short-lived glacial lakes remains uncertain.
Summary(Plain Language Summary, not published)
The Lynx Lake map (NTS 75-J) 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.
GEOSCAN ID293624