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TitleRefining lithological and structural understanding of the southern Core Zone, northern Quebec and Labrador in support of mineral resource assessment
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AuthorSanborn-Barrie, M
SourceGeological Survey of Canada, Open File 7965, 2016, 39 pages, https://doi.org/10.4095/297560
Year2016
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
File formatpdf
ProvinceQuebec; Newfoundland and Labrador
NTS23I; 23P
AreaRivière de Pas; Rivière George; Smallwood Reservoir; Woods Lake; Lac Résolution
Lat/Long WENS-66.0000 -64.0000 56.0000 54.0000
Subjectsstratigraphy; structural geology; economic geology; field work; bedrock geology; sampling methods; Archean; lithology; bedrock geology; glacial deposits; tills; sediment dispersal; lake sediment geochemistry; stratigraphic correlations; stratigraphic analyses; lithology; lithostratigraphy; Core Zone; New Quebec Orogen; Kaniapiskau Supergroup; Doublet Zone; Laporte Domain; De Pas Batholith; Atshakash assemblage; Precambrian; Proterozoic
Illustrationslocation maps; photographs; photomicrographs
ProgramHudson/Ungava, Northeastern Quebec-Labrador, surficial geology, GEM2: Geo-mapping for Energy and Minerals
Released2016 03 08
AbstractIntegrated mapping of the southern New Québec Orogen - Core Zone as part of the second phase of Geomapping for Energy and Minerals (GEM-2) is providing insight into the collisional orogen between the Superior and North Atlantic cratons by investigating the composition, age and architecture of intervening crust at a scale that will bridge knowledge of Archean and Paleoproterozoic tectonomagmatic evolution across the Quebec - Labrador border. In 2014, bedrock mapping of seventy-five localities investigated clastic and carbonate rocks of the Kaniapiscau Supergroup (eastern Labrador Trough), mafic metavolcanic rocks of the Doublet Zone, granitoid basement and unconformably overlying metasedimentary rocks of the Laporte domain, orthogneissic basement and the cross-cutting 1837-1820 Ma De Pas Batholith, and a collage of supracrustal rocks and associated gabbroic plutons that attain upper amphibolite to granulite facies (migmatitic Mistinibi domain) east of the De Pas batholith. 2014 observations were assessed in light of previous understanding of this region and a number of questions or knowledge gaps were identified which formed the basis for supporting laboratory analysis and targetted mapping in 2015. Bedrock findings are being integrated with surficial mapping, till analysis and glacial dispersion studies, collectively contributing knowledge for increased exploration effectiveness across this part of Quebec and Labrador.
Summary(Plain Language Summary, not published)
Bedrock mapping in northern Quebec and Labrador is exploring the collisional orogen between the Archean Superior and North Atlantic cratons by examining the architecture and evolution of the southern Core Zone. Seventy-five localities mapped in NTS 23P,23I investigated the eastern Labrador Trough, mafic metavolcanic rocks (Doublet Zone), granitoid basement and unconformable metasedimentary rocks (Laporte domain), orthogneissic basement and cross-cutting 1837-1820 Ma De Pas Batholith, and a collage of supracrustal rocks and plutons (migmatitic Mistinibi-Raude domain) east of De Pas batholith. Bedrock findings are being integrated with surficial mapping, till analysis and glacial dispersion studies, collectively contributing knowledge for increased exploration effectiveness across this part of Quebec and Labrador.
GEOSCAN ID297560