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Author Bickford, M. E. ♦ Van Schmus, W. R. ♦ Collerson, K. D. ♦ Lewry, J. F.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword GEOSCIENCES ♦ GEOLOGIC DEPOSITS ♦ TECTONICS ♦ SASKATCHEWAN ♦ AGE ESTIMATION ♦ ATHABASCA DEPOSIT ♦ CONTINENTAL CRUST ♦ GEOLOGIC HISTORY ♦ GEOMORPHOLOGY ♦ ISOTOPE RATIO ♦ METAMORPHISM ♦ OROGENESIS ♦ PRECAMBRIAN ERA ♦ CANADA ♦ EARTH CRUST ♦ GEOLOGIC AGES ♦ GEOLOGY ♦ NORTH AMERICA ♦ OIL SAND DEPOSITS ♦ Geosciences
Abstract Isotopic and structural data from the juvenile Reindeer zone of the Trans-Hudson orogen, northern Saskatchewan, indicate a pre-1.85 Ga thermotectonic event, possibly reflecting arc-continent collision, followed by a more extensive, nappe-forming, ca. 1.83-1.80 Ga thermotectonism during terminal continent-continent collision. Preliminary data from the adjacent, ensialic Cree Lake zone suggest high-grade reworking of Archean crust by the pre-1.85 Ga event. In the Rae province to the west, high-grade metamorphism and reworking of Archean crust occurred about 2.0 Ga and may be related to the formation of the coeval Taltson magmatic zone.
ISSN 00917613
Educational Use Research
Learning Resource Type Article
Publisher Date 1990-01-01
Publisher Place United States
Journal Geology
Volume Number 18
Issue Number 1


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