Bibliographische Detailangaben
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Personen und Körperschaften:
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Corrigan, D (VerfasserIn) |
| Format: |
Artikel
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| Sprache: |
English
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| veröffentlicht: |
Government of Manitoba, 2015 |
| Gesamtaufnahme: |
GEM2: Geo-mapping for Energy and Minerals
Tectonic setting and evolution of the Circum-Superior Belt, Trans-Hudson Orogen; Explore Manitoba: technical program / abstracts; 2015 p. 1, Natural Resources Canada, Contribution Series
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| Schlagwörter: |
Circum-Superior Belt;
Trans-Hudson Orogen;
Manitoba;
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| Quelle: |
GEOSCAN
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| Zusammenfassung: |
The Trans-Hudson orogen records approximately 150 m.y. of ocean opening fol...
The Trans-Hudson orogen records approximately 150 m.y. of ocean opening followed by ca. 90 m.y. of ocean closure, arc formation, tectonic and magmatic accretion, followed by 30 to 40 m.y. of continent-continent collision during the formation of the Supercontinent Nuna (Columbia). Early events related to plate convergence include outward growth of a pre-existing continental collage consisting of the Archean-age Slave and Rae cratons by successive accretion of Archean ribbon- and micro-continents (Hearne, Meta-Incognita, Sugluk and Sask cratons). Oceanic arc terranes that formed within and outboard of this collage (in the orogen internides) record a complex history of intraoceanic accretion, back-arc opening and inversion, tectonic accretion to continental margins, subduction flip, development of continental arc batholiths and obduction of oceanic crust. This short course segment will focus on the accretionary and collisional history along the Circum-Superior margin and implication for the formation and preservation of magmatic Ni-Cu-PGE and other deposit types, from the Thompson Nickel Belt to the Labrador Trough.
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