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TitleReconnaissance surficial geology, Beaverhill Lake, Northwest Territories, NTS 75-I
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AuthorStea, R; Kerr, D E
SourceGeological Survey of Canada, Canadian Geoscience Map 141, 2014, 1 sheet, https://doi.org/10.4095/293151
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
RelatedThis publication is superceded by Stea, R; Kerr, D E; (2014). Reconnaissance surficial geology, Beaverhill Lake, Northwest Territories, NTS 75-I, Geological Survey of Canada, Canadian Geoscience Map no. 141, ed. 2, Prelim.
File formatreadme
File formatpdf; rtf; shp; xml; xls; jpg; JPEG2000
ProvinceNorthwest Territories
NTS75I
AreaOlson Lake; Beaverhill Lake; Breithaupt Lake; Noyes Lake; Bewick Lake; Jim Lake; Sid Lake; Mantic Lake; Howard Lake; Gardenia Lake; Scheelar Lake
Lat/Long WENS-106.0000 -104.0000 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; colluvial deposits; lacustrine deposits; eskers; kames; moraines; Cenozoic; Quaternary
ProgramGeomapping for Energy & Minerals (GEM) - Geo-mapping Frontiers, GEM: Geo-mapping for Energy and Minerals
Image
Released2014 01 29
AbstractReconnaissance mapping, through aerial photograph interpretation and limited field and legacy data in the Beaverhill Lake map area, provides an understanding of surficial sediments and glacial history. The last major ice flow was westward, indicated by glacially fluted landforms, although local minor southwestward and northwestward flows are recorded. An earlier west-southwest flow is inferred from streamlined features and erosional troughs observed locally. Major glaciofluvial corridors indicate a westward meltwater flow, debauching locally into glacial lakes in the central and northeast regions, representing various phases of glacial Lake Thelon. Glaciolacustrine regression beaches occur around Beaverhill Lake and elsewhere, at and below 340 m a.s.l. The extensive muskeg deposits in the north central regions are remnants of this glacial lake, and occur at elevations up to 365 m or possibly higher. The lake sediments are mapped as organics, presumably underlain by glaciolacustrine sediments, and glaciolacustrine veneer over till, reflecting the uncertainty of glaciolacustrine sediment thickness and extent.
Summary(Plain Language Summary, not published)
The Beaverhill Lake map (NTS 75-I) identifies surficial materials and associated landforms left by the retreat of the last glaciers which covered the area about 8500 years ago. The surficial geology is based on aerial photograph interpretation and limited previous fieldwork. This work provides new geological knowledge and improve our understanding of the distribution, nature and glacial history of surficial materials.
GEOSCAN ID293151