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TitleSurficial geology, Herb Lake, Manitoba
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorHenderson, P J; McMartin, IORCID logo
SourceGeological Survey of Canada, Open File 5589, 2007, 1 sheet; 1 CD-ROM, Open Access logo Open Access
LinksMetadata - Métadonnées
PublisherNatural Resources Canada
Documentopen file
Maps1 map
Map Info.surficial geology, glacial deposits, 1:50,000
Mediapaper; CD-ROM; on-line; digital
File formatreadme / lisez-moi
File formatpdf; e00 (ESRI® ArcExplorer v. 2.0 is included / est fourni); shp; txt; tif; doc; JPEG2000
AreaHerb Lake; Wekusko Lake
Lat/Long WENS-100.0000 -99.5000 55.0000 54.7500
Subjectssurficial geology/geomorphology; glacial deposits; alluvial deposits; organic deposits; glacial lake deposits; glaciofluvial deposits; bedrock geology; silts; sands; gravels; clays; tills; glacial features; eskers; striae; mines; pits; thermokarst; ice contact deposits; Wisconsinan Glaciation; Quaternary; Cenozoic
ProgramTargeted Geoscience Initiative (TGI-3), 2005-2010
Released2007 12 01
AbstractThe geoscientific data presented on this map were collected as part of the five-year NATMAP Shield Margin Project (1991-1996) by the Geological Survey of Canada and Manitoba Energy and Mines. The map is based on field work, air photo interpretation (1:60 000 scale aerial photographs), LANDSAT TM imagery, SRTM digital elevation data, and available drift composition. The glacial erosional record in the Herb Lake map area indicates multiple ice flow events, primarily related to the last cycle of glacial advance and retreat of ice originating from the Keewatin Sector to the north. The rarity of older glacial sediments beneath surface till demonstrates almost complete glacial erosion during the latest glacial events hence the lack of significant compositional masking of the underlying bedrock, a situation favourable to drift prospecting. Following deglaciation, the area was inundated by Lake Agassiz. Extensive glacial lake deposits cover the area with thicknesses ranging from a thin veneer to tens of metres.

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