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TitleThree hundred million years of tectonic history recorded by the Red Lake greenstone belt, Ontario
AuthorSanborn-Barrie, M; Skulski, T; Parker, J
SourceGeological Survey of Canada, Current Research (Online) no. 2001-C19, 2001, 30 pages, (Open Access)
PublisherNatural Resources Canada
Mediapaper; on-line; digital; CD-ROM
RelatedThis publication is contained in Geological Survey of Canada; (2001). Current Research 2001, winter release, Geological Survey of Canada, Current Research no. 2001
File formatpdf
NTS52K/13; 52N/04
AreaRed Lake
Lat/Long WENS-94.0000 -93.5000 51.2500 50.7500
Subjectstectonics; greenstone belts; tectonic history; tectonic setting; magmatism; sedimentation; Archean; magmatic arcs; rifts; hydrothermal alteration; gold; mineralization; deformation; Red Lake greenstone belt; North Cariboo terrane; Balmer assemblage; Ball assemblage; Slate Bay assemblage; Bruce Channel assemblage; Trout Bay assemblage; Huston assemblage; Confederation assemblage; Precambrian
Illustrationssketch maps; photographs; schematic diagrams; profiles; Concordia diagrams
ProgramWestern Superior NATMAP Project
Released2001 01 01
AbstractThe Red Lake belt records ca. 300 Ma of episodic magmatism, sedimentation, and tectonothermal activity along the south margin of the 3 Ga North Caribou terrane. Autochthonous assemblages appear to reflect initial (2.99-2.96 Ga) plume magmatism, 2.94 to 2.91 Ga arc magmatism, 2.90 to 2.89 Ga sedimentation, and protracted Neoarchean continental arc and intra-arc rift-related magmatism (2.75-2.73 Ga). A ca. 2.85 Ga oceanic assem- blage containing MORB-like basalt may have been accreted and caused early uplift and erosion prior to Neoarchean magmatism. This was followed by collisional orogenesis at ca. 2.72 Ga, the Uchian phase of the Kenoran Orogeny, which was accompanied by extensive hydrothermal alteration and gold mineralization.