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Title40Ar/39Ar biotite, muscovite, and hornblende ages from the Cape Smith belt and Superior Craton, northern Quebec
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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorSkipton, D R; St-Onge, M R; Joyce, N L
SourceGeological Survey of Canada, Open File 8710, 2020, 57 pages, https://doi.org/10.4095/322170 Open Access logo Open Access
Image
Year2020
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
File formatreadme
File formatpdf; rtf; xlsx (Microsoft® Excel®)
ProvinceQuebec
NTS38A; 38B; 38C; 38F; 38G; 38H; 38I; 38J; 38K
AreaUngava Peninsula; Nunavik; Wakeham Bay; Cap de Nouvelle-France; Hudson Bay
Lat/Long WENS -78.0000 -72.0000 62.6667 60.2500
Subjectsgeochronology; regional geology; stratigraphy; tectonics; Science and Technology; Nature and Environment; radiometric dating; argon argon dating; biotite; muscovite; hornblende; spectrometric analyses; thermal history; bedrock geology; lithology; metamorphic rocks; metasedimentary rocks; metavolcanic rocks; structural features; faults, thrust; amphibolite facies; tectonic history; orogenies; metamorphism; strain; fabric analyses; Archean; Cape Smith Belt; Superior Craton; Minto Block; Trans-Hudsonian Orogen; Narsajuaq Arc Terrane; Spartan Group; Watts Group; Superior Margin; Povungnituk Group; Paleoproterozoic; Precambrian; Proterozoic
Illustrationsgeoscientific sketch maps; bar graphs
ProgramOpen Geoscience
Released2020 03 31
AbstractThis Open File presents forty-nine new 40Ar/39Ar step-heating analyses of biotite, muscovite and hornblende from Paleoproterozoic strata of the Cape Smith belt and Archean orthogneiss of the Superior Craton in northern Quebec, Canada. Geological mapping and sample collection were conducted in the Cape Smith belt and surrounding Superior cratonic basement by the Geological Survey of Canada during 1985-1987 (mapping is summarized in St-Onge et al., 2007). In the portion of the Superior Craton located south of the Cape Smith belt, known as the Minto Block, geological mapping and sample collection were performed by the Geological Survey of Canada in 1961-1963 (Stevenson, 1968) and 1973 (Taylor, 1982). The 40Ar/39Ar thermochronological analyses presented here were carried out on thirty-two metaplutonic, metasedimentary and metavolcanic samples along a north-to-south transect across parautochthonous and allochthonous units and their bounding crustal structures in order to (i) delineate possible domains with different cooling histories and (ii) provide new insights into the post-collisional history of the Trans-Hudsonian orogenic front. Age determinations were conducted in 2004 at the Geological Survey of Canada Noble Gas Laboratory facility in Ottawa, Ontario, Canada.
Summary(Plain Language Summary, not published)
This Open File presents forty-nine new analyses of biotite, muscovite and hornblende from the Cape Smith belt and the Superior Craton in northern Québec. Geological mapping and sample collection were conducted by the Geological Survey of Canada in 1961-1963, 1973, and 1985-1987. Thermochronology on thirty-two samples along a north-to-south transect was conducted in order to delineate possible domains with different cooling histories and provide new insights into the post-collisional history of the Trans-Hudsonian orogenic front.
GEOSCAN ID322170

 
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