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GEOREF RECORD
Late Archean Quetico accretionary complex, Superior Province, Canada
John A. Percival and Howard R. Williams
Late Archean Quetico accretionary complex, Superior Province, Canada
Geology (Boulder) (January 1989) 17 (1): 23-25
Late Archean Quetico accretionary complex, Superior Province, Canada
Geology (Boulder) (January 1989) 17 (1): 23-25
Index Terms/Descriptors
- accretion
- accretionary wedges
- Archean
- Canadian Shield
- distribution
- faults
- granites
- igneous rocks
- imbricate tectonics
- metagraywacke
- metamorphic rocks
- metamorphism
- metasedimentary rocks
- migmatites
- Neoarchean
- North America
- P-T conditions
- plutonic rocks
- Precambrian
- Quetico Belt
- structural geology
- Superior Province
- tectonics
- terranes
- thrust faults
- transcurrent faults
- low-pressure metamorphism
Latitude & Longitude
Abstract
The 1200-km-long Quetico subprovince consists of monotonous metagraywacke, with derived migmatite and granite, in thrust and/or transcurrent fault contact with the adjacent Wabigoon and Wawa metavolcanic subprovinces. Imbrication of sedimentary wedges derived from volcanic arcs to the north and south produced a 10-100-km-wide, stratigraphically north-facing pile. Thermal relaxation in the 20 m.y. following accretion of the southern arc resulted in melting of the accretionary pile to produce peraluminous granite and associated low-pressure metamorphism.
ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 17
Serial Issue: 1
Title: Late Archean Quetico accretionary complex, Superior Province, Canada
Affiliation: Geol. Surv. Can., Lithosphere and Can. Shield Div.,
Ottawa, ON,
Canada
Pages: 23-25
Published: 198901
Text Language: English
Publisher: Geological Society of America (GSA),
Boulder, CO,
United States
References: 30
Accession Number: 1989-024520
Categories: Structural geology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Geol. Surv. Can., Contrib. No. 31388
Illustration Description: illus. incl. sketch map
N48°45'00" - N51°30'00", W89°00'00" - W82°00'00"
Secondary Affiliation: Ont. Geol. Surv.,
CAN,
Canada
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1989