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MANIFESTATION MAGMATIQUE [1 record]

Record 1 2007-11-07

English

Subject field(s)
  • Geochemistry
  • Petrography
CONT

About the middle of the Proterozoic many anorthositic plutons were emplaced in two linear belts which now lie in the northern and southern hemispheres when plotted on a pre-Permian continental reconstruction. A number of these carry ilmenite orebodies which are exploited in Norway and Canada. This was a unique magmatic event that has not been repeated.

OBS

magmatic event: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Géochimie
  • Pétrographie
CONT

[...] l'influence du milieu géosynclinal peut se faire sentir à plusieurs centaines de kilomètres sur la plate-forme et permettre à certaines substances de se déposer dans des séries sédimentaires, sans manifestations magmatiques associées.

CONT

Bien que les minéralisations soient liées à des phénomènes magmatiques, les influences géographiques et paléogéographiques ne sont pas négligeables.

OBS

évènement : Cette graphie, puisée des Rectifications de l'orthographe recommandées par le Conseil supérieur de la langue française, est attestée dans le Petit Robert (2004).

OBS

événement magmatique : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

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