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TitleTill composition across the MacAlpine Moraine System: results from the GEM-2 Thelon tectonic zone project, Nunavut (NTS 76-H and NTS 76-I)
AuthorMcMartin, I; Berman, R G
SourceGeological Survey of Canada, Open File 7910, 2015, 21 pages, (Open Access)
LinksCanadian Database of Geochemical Surveys, downloadable files
LinksBanque de données de levés géochimiques du Canada, fichiers téléchargeables
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatreadme
File formatxls; pdf; rtf
NTS76H; 76I
AreaEllice River; Duggan Lake; Back River; Thelon Game Sanctuary; Queen Maud Gulf Bird Sanctuary
Lat/Long WENS-106.0000 -104.0000 67.0000 65.0000
Subjectssurficial geology/geomorphology; tills; glacial deposits; till geochemistry; lithology; gold; bedrock geology; ice flow; ice movement directions; moraines; outwash; MacAlpine Moraine System; Quaternary
Illustrationslocation maps; photographs; flow charts
ProgramGEM2: Geo-mapping for Energy and Minerals, Rae Province, Chantrey-Thelon
Released2015 07 22
AbstractThis report releases the field database and analytical results from a targeted till sampling survey completed during 8 days in 2014 over NTS 76H and 76I as part of the Geological Survey of Canada's GEM-2 Thelon tectonic zone project, mainland Nunavut. The survey covers parts of the Thelon tectonic zone and adjacent Slave craton, and crosses the western end of the MacAlpine Moraine System. Quaternary field observations were recorded at 55 field stations; 28 of these included the collection of surface till samples. Samples were analyzed mainly for matrix geochemistry, gold grain counts, indicator mineral picking of the sand fraction, and pebble lithology analysis. The interpretation of till provenance and the implications for mineral exploration and economic potential will be provided elsewhere (McMartin, in prep.).
Summary(Plain Language Summary, not published)
This report releases the field database and laboratory results from a surface glacial sediment sampling survey completed in 2014 in central Nunavut. This work provides new geological knowledge on the nature of surficial materials left by the retreat of the last glaciers south of the Arctic ocean mainland coast. The findings will support informed decision making for resource exploration and development, and for land use management. This work was conducted under the Thelon tectonic zone project at the Geological Survey of Canada, as part of Natural Resources Canada's Geo-mapping for Energy and Minerals (GEM-2) Program.