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LEUCOCRATIC PLUTON [1 record]

Record 1 2006-11-15

English

Subject field(s)
  • Petrography
CONT

The leucocratic plutons are tonalitic to granodioritic in composition.

OBS

leucocratic: [Said of] a light coloured rock containing a low proportion (generally less than 30%) of dark ferromagnesian minerals. ... pluton: A body of igneous rock that has formed beneath the surface of the earth by the consolidation of magma.

OBS

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

French

Domaine(s)
  • Pétrographie
OBS

pluton : Grande masse de roche ignée, cristallisée et située profondément sous l'écorce terrestre.

OBS

leucocrate : S'applique aux roches magmatiques riches en minéraux dits «blancs», c'est-à-dire en quartz et/ou feldspaths et/ou feldspathoïdes. Généralement, les roches leucocrates sont pâles car elles sont riches en silice. Les roches acide et intermédiaire sont dites leucocrates.

OBS

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

Spanish

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