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TitleSurficial geology, Contwoyto Lake, Northwest Territories-Nunavut
AuthorKerr, D E; Ward, B C; Dredge, L A
SourceGeological Survey of Canada, "A" Series Map 1978A, 2000, 1 sheet; 1 CD-ROM,
PublisherNatural Resources Canada
Maps1 map
Map Info.surficial geology, landforms, lithological, 1:125,000
Mediapaper; CD-ROM; digital; on-line
RelatedThis publication is related to Geological Survey of Canada; (2014). Surficial geology, Contwoyto Lake, Northwest Territories - Nunavut, NTS 76-E, Geological Survey of Canada, Canadian Geoscience Map no. 198, ed. Prelim., Surficial Data Model V.2.0 Conversion
File formatreadme / lisez-moi
File formate00 (ESRI® ArcExplorer v. 2.0 is included / est fourni); shp; pdf; JPEG2000
ProvinceNunavut; Northwest Territories
AreaContwoyto Lake; Peacock Hills; Lupin; Fry Inlet; Eda Lake; Yamba Lake
Lat/Long WENS-112.0000 -110.0000 66.0000 65.0000
Subjectssurficial geology/geomorphology; glacial deposits; organic deposits; alluvial deposits; glaciolacustrine deposits; glaciofluvial deposits; glacial history; glacial features; glacial landforms; eskers; Wisconsinan Glaciation; Quaternary
ProgramSlave Province NATMAP Project
LinksMetadata - Métadonnées
Released2000 07 01; 2005 05 01
AbstractOngoing geological exploration and related infrastructure development in central and northern Slave Geological Province have resulted in the need for a wide range of baseline information. In response, Terrain Sciences Division initiated regional surficial geology mapping through the Slave Province National Mapping Program (NATMAP) to provide fundamental regional data on surficial materials and till geochemistry. In 1994, Terrain Sciences Division undertook mapping of the south half of the Contwoyto Lake map area (NTS 76E). As an extension to Slave NATMAP, surficial geology mapping continued in 1996 in the north half of the Contwoyto Lake map area, east and north of recently mapped 1:250 000 sheet (Kerr et al., 1995, 1997a). The project involved helicopter-assisted ground work including terrain mapping, till sampling, pebble provenance studies, measurement of ice flow indicators, and recording permafrost features. Field traverses and airphoto interpretation provided information on the nature and distribution of surficial materials shown on the map. Till samples (1 Kg) were collected from hand-dug pits at 219 sites for textural analysis and trace element geochemistry; 52 bulk till samples (10 Kg) were collected for regional kimberlite indicator mineral analysis and gold grain analysis; pebbles (2 to 6 cm diameter) were collected from the till sample pits to assess glacial transport distances and ice flow patterns. Surficial geology was plotted on 1:60 000 scale airphotos and recompiled at 1:125 000 on a topographic base. This map supersedes previous surficial geology maps of this area (Hart et al., 1989; Ward et al., 1995; Kerr et al., 1997b). Ward et al. (1996a, b), Kerr et al. (1998, 1999) present the results of regional till geochemistry and kimberlite indicator mineral analyses. The regional glacial geology was first presented by Blake (1963). Subsequent bedrock mapping projects included brief comments regarding glacial geology (Bostock, 1966, 1980; Tremblay, 1966, 1967, 1976), and associated reconnaissance till geochemistry in the Lupin area is summarized in Coker et al. (1992).