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TitleReconnaissance surficial geology, Joe Lake, Nunavut, NTS 66-J, south half
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AuthorSt-Onge, D A; Kerr, D E
SourceGeological Survey of Canada, Canadian Geoscience Map 194, 2014, 1 sheet, https://doi.org/10.4095/295191
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 14 (NAD83)
Mediaon-line; digital
File formatreadme
File formatpdf; rtf; shp; xml; xls; jpg; JPEG2000
ProvinceNunavut
NTS66J/01; 66J/02; 66J/03; 66J/04; 66J/05; 66J/06; 66J/07; 66J/08
AreaJoe Lake; Buliard Lake; Queen Maud Gulf Migratory Bird Sanctuary
Lat/Long WENS-100.0000 -98.0000 66.5000 66.0000
Subjectssurficial geology/geomorphology; glacial features; glacial deposits; glacial landforms; tills; sands; gravels; glaciolacustrine deposits; glaciofluvial deposits; glaciomarine deposits; organic deposits; alluvial deposits; colluvial deposits; eolian deposits; lacustrine deposits; moraines; Cenozoic; Quaternary
ProgramRae Province Project Management, GEM2: Geo-mapping for Energy and Minerals
Image
Released2014 11 10
AbstractPreliminary surficial geology studies, based on air photo interpretation and limited legacy and recent field data, were undertaken in the Joe Lake map area to provide an understanding of the distribution and nature of surficial materials, and regional glacial history. Much of the western area is characterized by streamlined till landforms indicating ice flow towards the north-northwest to north, but locally an older north-northeast flow is crosscut by the younger north-northwestward flow. Similar features occur in the eastern half but are more subdued. Small areas of hummocky till occur in the map area and are associated with longitudinal moraine ridges developed generally parallel to ice flow. Northward flowing subglacial meltwater corridors consisting of eskers, washed till, boulder lags and scoured bedrock, cross the entire area. Glaciomarine deltas, beaches and associated sediments extend up to 160-170 m a.s.l. in the western region, and are found more consistently near 160 m a.s.l. in the eastern half of the map area where these sediments overlie much of the till at lower elevations. The consistency of the elevation of the glaciomarine deltas implies a rapid ice retreat relative to isostatic uplift. There is evidence of glaciolacustrine environments at 170-180 m elevation in the southwest but additional investigations are needed to determine their extent.
Summary(Plain Language Summary, not published)
The map identifies surficial materials and associated landforms left by the retreat of the last glaciers. The surficial geology is based on aerial photograph interpretation and limited fieldwork. This work provides new geological knowledge and improves our understanding of the distribution, nature and glacial history of surficial materials. It contributes to resource assessments and effective land use management.
GEOSCAN ID295191