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TitleBedrock geology, Lac des Bois, Northwest Territories
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorFallas, K M
SourceGeological Survey of Canada, Canadian Geoscience Map 308, 2018, 1 sheet, (Open Access)
PublisherNatural Resources Canada
Maps1 map
Map Info.geological, bedrock geology, 1:250,000
ProjectionUniversal Transverse Mercator Projection, UTM zone 10 (NAD83)
Mediaon-line; digital
RelatedNRCan photo(s) in this publication
RelatedFor all publications in this survey, see the following publications
File formatreadme
File formatpdf (Adobe® Reader®); rtf; gdb (ESRI® ArcGIS(TM) v.10.x); shp (ESRI® ArcGIS(TM) v.10.x); xml (ESRI® ArcGIS(TM) v.10.x); mxd (ESRI® ArcGIS(TM) v.10.x); xls (Microsoft® Excel® 2010)
ProvinceNorthwest Territories
AreaLac des Bois; Great Bear Lake; Smith Arm; Sahtu Settlement Area; Colville Hills
Lat/Long WENS-126.0000 -124.0000 67.0000 66.0000
Subjectsregional geology; geophysics; paleontology; fossil fuels; economic geology; bedrock geology; lithology; sedimentary rocks; conglomerates; shales; mudstones; sandstones; arenites; carbonates; limestones; dolostones; evaporites; gypsum; anhydrite; oolites; clasts; brecciation; basement geology; sedimentary structures; structural features; faults; faults, thrust; faults, reverse; folds; anticlines; synclines; monoclines; unconformities; karst topography; sinkholes; systematic stratigraphy; stratigraphic analyses; stratigraphic correlations; bedding planes; biostratigraphy; fossils; seismic data; seismic reflection surveys; seismic interpretations; structural analyses; structural interpretations; tectonic interpretations; deformation; sediments; sands; gravels; muds; glacial deposits; glaciofluvial deposits; glaciolacustrine deposits; eolian deposits; provenance; pebble lithology; petroleum resources; petroleum occurrence; oil seeps; oil; gas; exploration wells; gas wells; well locations; oil sands; sand, commodity; gravel, commodity; Paleogene; Eocene; Neyelle Lake Fault; Tunago Ridge Fault; Wright Lakes Fault; Lugewa Fault; Good Hope Fault; Martin House Formation; Summit Creek Formation; Arctic Red Formation; Slater River Formation; Bear Rock Assemblage; Bear Rock Formation; Delorme Group; Arnica Formation; Landry Formation; Mount Kindle Formation; Franklin Mountain Formation; Saline River Formation; Mount Cap Formation; Mount Clark Formation; Maunoir Arch; Mackenzie Plain; Langton Bay Formation; Horton River Formation; Anderson Plain; Laurentide Ice Sheet; Cordilleran Orogen; Ronning Group; peloids; vugs; Phanerozoic; Cenozoic; Quaternary; Tertiary; Mesozoic; Cretaceous; Paleozoic; Devonian; Silurian; Ordovician; Cambrian; Precambrian; Proterozoic
Illustrationslocation maps; index maps; geoscientific sketch maps; schematic cross-sections; photographs
ProgramGEM2: Geo-mapping for Energy and Minerals, Mackenzie Corridor, Shield to Selwyn
ProgramPolar Continental Shelf Program
Released2018 03 01
AbstractThe Lac des Bois map area (NTS 96-K) lies within the Colville Hills region of the Northwest Territories. Sparse bedrock exposures in the area include carbonate and siliciclastic strata ranging from Cambrian to Paleogene. These strata were deformed in the Cretaceous to Eocene by folding and contractional faulting associated with Cordilleran deformation. A pre-Cordilleran set of approximately north-trending extensional faults are preserved within subsurface Proterozoic and Cambrian strata, and were locally reactivated by Cordilleran deformation. A major unconformity between Devonian and Cretaceous strata is marked by tilted Paleozoic strata beneath the Cretaceous, and the absence of Devonian strata in the eastern part of the map area. Natural gas has been reported from petroleum exploration wells drilled into Mount Clark Formation (Cambrian) sandstone.
Summary(Plain Language Summary, not published)
This publication is a new bedrock interpretation at 1:250,000 scale for the Lac des Bois map area (NTS 96K). Stratigraphic and structural features have been reinterpreted based on field observations, petroleum exploration well data, and reflection-seismic data.