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Title40Ar/39Ar hornblende and biotite cooling ages for metamorphic rocks from the southern Rae Craton, Northwest Territories
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorRegis, D; Kellett, D AORCID logo
SourceGeological Survey of Canada, Open File 8438, 2018, 73 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatreadme
File formatpdf (Adobe® Reader®); rtf; xlsx (Microsoft® Excel®)
ProvinceNorthwest Territories
NTS65C; 65D; 65E; 65F; 75A; 75B; 75G; 75H
Lat/Long WENS-108.0000 -100.0000 62.0000 60.0000
Subjectsgeochronology; tectonics; radiometric dating; argon argon dating; hornblende; biotite; tectonic history; metamorphism, regional; thermal history; bedrock geology; lithology; metamorphic rocks; structural features; faults; shear zones; Archean; Rae Craton; Chipman Domain; Snowbird Domain; Wholdaia Lake Shear Zone; Firedrake Domain; McCann Domain; Penylan Domain; Boomerang Domain; Porter Domain; Snowbird Tectonic Zone; Black Bay Fault; Howard Lake Shear Zone; Hearne Craton; Dymond Lake Fault; Precambrian
Illustrationslocation maps; geoscientific sketch maps; bar graphs
ProgramGEM2: Geo-mapping for Energy and Minerals South Rae Province Bedrock/Surficial geology
Released2018 09 27
Summary(Plain Language Summary, not published)
This Open File presents new 40Ar/39Ar hornblende and biotite analyses for forty-six plutonic and pelitic samples in the southern part of the Rae craton, Northwest Territories (NWT). Detailed mapping and sampling for 40Ar/39Ar thermochronology was carried out as part of Natural Resources Canada¿s Geomapping for Energy and Minerals (GEM-II) South Rae project. Age determinations were carried out in the Geological Survey of Canada (GSC) Noble Gas Laboratory facility in Ottawa, Ontario. Samples have been collected from different tectono-metamorphic domains recognized in the South Rae (during three field seasons: 2012, 2015, and 2016) in order to (i) delineate domains of different cooling histories and (ii) improve our understanding of the age of regional metamorphism and exhumation of the South Rae craton. These data will be used in the future to examine the role of major structures and shear zones in accommodating the exhumation of different blocks, as well as the role of major crustal shear zone as conduits for transporting mineralized fluids.

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