TERMIUM Plus®

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

GRANULITA [1 record]

Record 1 2005-07-05

English

Subject field(s)
  • Petrography
DEF

A metamorphic rock consisting of even-sized, interlocking mineral grains less than 10% of which have any obvious preferred orientation [or a] relatively coarse, granular rock formed at the high pressures and temperatures of the granulite facies which may exhibit a crude gneissic structure due to the parallelism of flat lenses of quartz and/or feldspars.

OBS

The texture is typically granuloblastic.

French

Domaine(s)
  • Pétrographie
DEF

Roche métamorphique catazonale, à grains fins et de tailles voisines, de teinte claire avec quartz et feldspath dominants, hypersthène et grenat, accessoirement sillimanite, disthène, rutile, cordiérite et spinelle.

CONT

Roches métamorphiques [...]. Zone des granulites. Par ailleurs la structure des granulites est très particulière. De petites lentilles ou tablettes de quartz orientées dans le plan de la stratification donnent à la roche une foliation frustre. Ces tablettes sont englobées dans un fond finement granoblastique. Le métamorphisme des granulites a dû s'effectuer sous des pressions et températures élevées (degré ultra).

Spanish

Campo(s) temático(s)
  • Petrografía
DEF

Neis de granate (almandina) que contiene poca mica o carece de ella.

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