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TitleSurficial geology, Tightfit Lake, British Columbia
AuthorHuntley, D H; Hickin, A S; Chow, W; Mirmohammadi, M
SourceGeological Survey of Canada, Canadian Geoscience Map 126, 2013, 1 sheet,
PublisherNatural Resources Canada
Maps1 map
Map Info.surficial geology, glacial deposits and landforms, 1:50,000
ProjectionUniversal Transverse Mercator Projection, zone 10 (NAD83)
Mediaon-line; digital
File formatreadme
File formatpdf; rtf; xml; shp; xls
ProvinceBritish Columbia
AreaTightfit Lake
Lat/Long WENS-123.0000 -122.5000 59.7500 59.5000
Subjectssurficial geology/geomorphology; organic deposits; alluvial deposits; colluvial deposits; glacial features; glacial deposits; glacial landforms; glaciolacustrine deposits; glaciofluvial deposits; tills; eskers; moraines; drumlins; Cenozoic; Quaternary
Illustrationslocation maps
ProgramYukon Sedimentary Basins, GEM: Geo-mapping for Energy and Minerals
Released2013 05 08
AbstractCanadian Geoscience Map 126 depicts the surficial geology over some 790 km2 covered by the Tightfit Lake map sheet (NTS 94-O/10) in northeastern British Columbia. The map area lies at the western limit of the Etsho Plateau and northwest limit of the Fort Nelson Lowland. This boundary is a major drainage divide: Klenteh Creek and other tributaries to Kiwigana and Fort Nelson rivers drain the south-facing escarpment of the Etsho Plateau and Fort Nelson Lowland; to the north, the plateau and Tightfit Lake drain north into the Petitot River valley. Bedrock is mantled by unconsolidated earth materials that dates to the Late Pleistocene (Late Wisconsinan Glaciation, > 25 ka to ca. 10 ka) and non-glacial Holocene (ca. 10 ka to present). Deposits of till, green on the map, are generally suitable for placement of infrastructure. Glaciofluvial and eolian deposits with mineral, aggregate, and groundwater potential are coloured orange and buff. Slopes disturbed by landslides, debris flows, and rock falls appear brown and pink. Glaciolacustrine and organic deposits with sporadically discontinuous permafrost are coloured purple and grey. Alluvial deposits prone to flooding, erosion, and sedimentation appear yellow on the map.
Summary(Plain Language Summary, not published)
As natural resource development expands in northeastern British Columbia, up-to-date geological information will be needed to reduce the economic costs and environmental risks of developing new sources of energy and minerals. Canadian Geoscience Map 126 was produced as part of the Geo-Mapping for Energy and Minerals Yukon Basins Project to help meet this demand. The map, legend and accompanying notes incorporate past research with field observations and interpretation of satellite images to provide new insights into distribution, nature, origin and resource potential of earth surface materials and geological hazards on the Tightfit Lake map sheet (NTS 94O-010). CGM 126 is intended for use by governments, universities, resource companies, environmental consultants, First Nations communities, municipalities and the general public.