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TitleSurficial geology, Knox Lake, Newfoundland and Labrador-Quebec, NTS 23-I northwest
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AuthorPaulen, R C; Rice, J M; Campbell, H E; McClenaghan, M B
SourceGeological Survey of Canada, Canadian Geoscience Map 377, 2019, 1 sheet, https://doi.org/10.4095/313547 (Open Access)
Image
Year2019
PublisherNatural Resources Canada
Documentserial
Lang.English
Maps1 map
Map Info.surficial geology, sediments, landforms, features, 1:100,000
ProjectionUniversal Transverse Mercator Projection, UTM zone 20 (NAD83)
Mediaon-line; digital
RelatedNRCan photo(s) in this publication
RelatedThis publication is related to the following publications
File formatreadme
File formatpdf (Adobe® Reader®); rtf; gdb (ESRI® ArcGIS(TM) 10.x); shp (ESRI® ArcGIS(TM) 10.x); xml (ESRI® ArcGIS(TM) 10.x); mxd (ESRI® ArcGIS(TM) 10.x)
ProvinceNewfoundland and Labrador; Quebec
NTS23I/11; 23I/12; 23I/13; 23I/14
AreaKnox Lake; Labrador
Lat/Long WENS -66.0000 -65.0000 55.0000 54.5000
Subjectssurficial geology/geomorphology; postglacial deposits; organic deposits; colluvial deposits; landslide deposits; glacial deposits; glacial landforms; glacial features; glacial lakes; proglacial lakes; ice contact deposits; beach ridges; eskers; paleocurrents; meltwater channels; tills; kettles; moraines; moraine, ribbed; drumlinoids; glacial flutings; crag and tail; kames; glacial striations; ice flow; silts; sands; boulders; gravels; clays; permafrost; periglacial features; frost heaving; frost boils; solifluction; glacial history; glaciation; Wisconsinian glacial stage; ice sheets; deglaciation; shoreline changes; well level fluctuations; depositional environment; sedimentary structures; bedrock geology; lithology; Glacial Lake McLean; Glacial Lake Low; Laurentide Ice Sheet; Ancestral Labrador Ice Divide; Core Zone; De Pas Batholith; Kaniapiskau Supergroup; Doublet Zone; New Quebec Orogen; fen deposits; alluvial sediments; lacustrine sediments; glaciolacustrine sediments; glaciolacustrine beach sediments; glaciolacustrine littoral sediments; glaciolacustrine nearshore sediments; glaciofluvial sediments; glaciofluvial outwash plain sediments; glaciofluvial hummocky sediments; glaciofluvial veneer; ridged tills, moraine; streamlined tills; till veneer; till blanket; winnowed sediments; moraine ridges; ice-flow directions; outcrops; station locations; beach crests; diamicton; cobbles; pebbles; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; index maps; photographs
ProgramHudson/Ungava, Northeastern Quebec-Labrador, surficial geology, GEM2: Geo-mapping for Energy and Minerals
ProgramPolar Continental Shelf Program
Released2019 03 26
AbstractThe Knox Lake area is of moderate relief characterized by extensive till blankets in the lowlands, and till veneers and bedrock outcrops at higher elevations. The region was differentially eroded by the Laurentide Ice Sheet throughout Wisconsin time, largely influenced by the migration of the Ancestral Labrador ice divide. Phases of radial ice flow from the migrating ice divide imparted discordant erosional ice-flow landforms and ice-flow indicators on the landscape. Terrain at higher elevations has been scoured by meltwaters from late-phase ablation of the ice sheet during deglaciation, which fed into an esker network trending from northwest to southeast across the map area. Extensive lowland fens, glaciolacustrine strandlines, and littoral sediments that surround isolated streamlined till units in the central portion of the map, mark the former northern extent of inundation of a large, shallow glacial lake (glacial Lake Low).
Summary(Plain Language Summary, not published)
Surficial geology map from the GEM2 Core Zone Surficial Activity straddling the border between Quebec and Newfoundland and Labrador. This map provides the regional framework surficial geology in a region of Canada previously unmapped.
GEOSCAN ID313547