Abstract
The western margin of the Churchill craton records a complex history of Paleoproterozoic tectonism. The most prominent of these tectonic events is recorded within the 2.0–1.9‐Ga Taltson‐Thelon magmatic zone. The widespread magmatism and high‐grade metamorphism of this zone, especially in Alberta and Saskatchewan, obscures an older tectonic belt, the ca. 2.4–2.3‐Ga Arrowsmith Orogeny. In the Uranium City region of northwestern Saskatchewan, a suite of Paleoproterozoic granites represent a magmatic product of this orogen. U‐Pb zircon crystallization ages were identified for the Macintosh Bay monzogranite ($$2330\pm 5$$ Ma), the Gunnar monzogranite ($$2321\pm 3$$ Ma), the Geebee Lake tonalite ($$2320\pm 44$$ Ma), the Yahyah Lake granite ($$2287\pm 14$$ Ma), and the Hayter Bay monzogranite ($$2297\pm 10$$ Ma). The petrological and geochemical characteristics, emplacement ages, and Nd isotopic geochemistry of these plutons are most consistent with a syn‐ to postcollisional orogenic setting, possibly coeval with a period of orogenic extension and exhumation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
