TERMIUM Plus®

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POLYMETAMORPHISM [1 record]

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Alphabetical list of terms

Record 1 2011-06-03

English

Subject field(s)
  • Petrography
DEF

[A] polyphase or multiple metamorphism whereby two or more successive metamorphic events have left their imprint upon the same rocks.

OBS

Metamorphism can be ... classified on the basis of different criteria such as ... whether it resulted from a single or multiple event(s), that is, monometamorphism and polymetamorphism.

OBS

In practice, it may be a difficult matter to differentiate polyphase metamorphism from polymetamorphism.

OBS

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

Key term(s)
  • poly-metamorphism

French

Domaine(s)
  • Pétrographie
DEF

Superposition de plusieurs phases métamorphiques.

CONT

Le polymétamorphisme se traduit [...] par une minéralogie complexe et très particulière et par une géochimie inusuelle, rassemblant des éléments qui ne se rencontrent pas ensemble dans les minéralisations dont l'histoire géologique est plus simple [...]

CONT

Les polymétamorphismes comportant une phase rétrograde sont généralement incomplets, c'est-à-dire qu'ils présentent des témoins non rétromorphosés du fait d'une quantité insuffisante d'eau.

OBS

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

Spanish

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