TERMIUM Plus®

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PROTOGENE [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-04-26

English

Subject field(s)
  • Petrography
DEF

A granitic rock, occurring in the Alps, that has gneissic structure, contains sericite, chlorite, epidote, and garnet, and shows evidence of a composite origin or of crystallization ... under stress after consolidation.

French

Domaine(s)
  • Pétrographie
DEF

Granite porphyroïde plus ou moins mylonitisé.

CONT

D'une part, les masses granito-gneissiques peuvent être déformées à la suite de mouvements orogéniques. C'est le cas de la «protogine» des massifs centraux alpins, Mont-Blanc et Oisans en particulier, roche claire à mica noir transformé en chlorite et dont le quartz présente en lumière polarisée une extinction roulante [...]

Spanish

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