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TitleNew insights into the geological evolution and economic potential of the Thelon tectonic zone and western Rae craton, Nunavut
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AuthorBerman, R G; Nadeau, L; Davis, W J; McCurdy, M W; Craven, J A; McMartin, I; Whalen, J B; Sanborn-Barrie, M; Carr, S; Pehrsson, S J; Percival, J A; Girard, É
SourceGeological Survey of Canada, Open File 7901, 2015, 1 sheet, https://doi.org/10.4095/296719
Year2015
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
File formatpdf
ProvinceNunavut
NTS66E; 66F; 66G; 66H; 66I; 66J; 66K; 66L; 76H; 76I
Lat/Long WENS-106.0000 -95.0000 68.0000 65.0000
Subjectsstratigraphy; geophysics; structural geology; geochemistry; geochronology; economic geology; tectonics; bedrock geology; analytical methods; glacial deposits; structural interpretations; mineral potential; geophysical interpretations; magnetic anomalies; magnetotelluric interpretations; metamorphism; base metals; till geochemistry; copper; nickel; lithology; metamorphic facies; amphibolite facies; stream sediment geochemistry; gold; silver; ultramafic rocks; volcanic rocks; Thelon Tectonic Zone; Queen Maud block; Rae craton; Slave Province; Chantrey fault; Precambrian; Proterozoic
Illustrationslocation maps; photographs; analyses
ProgramRae Province, Chantrey-Thelon, GEM2: Geo-mapping for Energy and Minerals
Image
Released2015 08 04
Summary(Plain Language Summary, not published)
This report presents preliminary results of a new GEM-2 project in western Nunavut aimed at gaining new understanding of the crustal architecture and its control on areas of high mineral potential. The report documents eight distinct geological domains, three of which host precious and/or base metal anomalies. Geochronological results reveal a new age of Paleoproterozoic ultramafic-mafic volcanism (1950 Ma) that is interpreted as the source of silver and base metal anomalies. Gold appears associated with newly recognized iron formation within a plutonic belt separating old (Mesoarchean) crustal blocks. New geochemistry and magnetotelluric data are consistent with the Thelon tectonic zone forming during multiple collisions separated by a transient period of extension and mafic volcanism.
GEOSCAN ID296719