Proterozoic collisional tectonism in the Trans-Hudson orogen, Saskatchewan

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Geology; (USA)

DOI:https://doi.org/10.1130/0091-7613(1990)018<0014:PCTITT>2.3.CO;2· OSTI ID:6213312

Bickford, M E; Chiarenzelli, J R; Van Schmus, W R ^[1]; Collerson, K D ^[2]; Lewry, J F ^[3]

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1. Univ. of Kansas, Lawrence (USA)
2. Univ. of California, Santa Cruz (USA)
3. Univ. of Regina, Saskatchewan (Canada)

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.

• OSTI ID: 6213312
• Journal Information: Geology; (USA), Vol. 18:1; ISSN 0091-7613
• Country of Publication: United States
• Language: English

Related Subjects

58 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
580000* - Geosciences