TERMIUM Plus®

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GREENSTONE [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2004-11-02

English

Subject field(s)
  • Petrography
OBS

A field term for any compact dark-green altered or metamorphosed basic igneous rock that owes its color to chlorite, actinolite, or epidote.

PHR

Greenstone sequence, terrane.

French

Domaine(s)
  • Pétrographie
CONT

Chlorites et épidotes ont une coloration verte plus ou moins prononcée. C'est ce qui explique qu'on désigne sous le nom de roches vertes les roches métamorphiques [...] qui les renferment en abondance.

CONT

Roches vertes. Expression désignant d'une manière générale l'ensemble des roches magmatiques plutoniques et effusives, basiques et ultrabasiques, dont la teinte verte est due au développement de chlorite, épidote, amphibole, et serpentine, du fait de l'altération et, plus souvent, du métamorphisme [...]

CONT

Associés à des roches vertes (gabbros et dolérites, basaltes avec coussinets, tufs), il existe en Australie des filons aurifères.

PHR

Séquence, terrane de roches vertes.

Spanish

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