TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

GRANITE PORPHYRY [1 record]

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Filter results by subject field

Alphabetical list of terms

Record 1 2011-05-16

English

Subject field(s)
  • Petrography
DEF

A rock consisting of a fine-grained, holocrystalline base through which the ordinary constituents of granite are scattered in more or less regular crystalline forms.

French

Domaine(s)
  • Pétrographie
DEF

Roche à grains serrés, composée d'éléments du granite, dans lesquels sont disséminés de gros cristaux de quartz et de feldspath.

OBS

C'est un granite qui a refroidi dans des conditions filoniennes loin du magma originel, il a donc acquis une structure porphyrique. À ne pas confondre avec les porphyres quartzifères qui sont d'anciennes laves acides. On trouve des porphyres granitiques en Sardaigne et dans l'île d'Elbe.

Spanish

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