TERMIUM Plus®

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

GRAUWACKE [1 record]

Record 1 2006-05-25

English

Subject field(s)
  • Petrography
DEF

... a dark ... and very hard, tough, and firmly indurated, coarse-grained sandstone [which] consists of poorly sorted and extremely angular to subangular grains of quartz and feldspar with an abundant variety of small, dark rock and mineral fragments embedded in a ... compact, partly metamorphosed clayey matrix having the general composition of slate and containing an abundance of very fine-grained micaceous ... and chloritic minerals; ...

French

Domaine(s)
  • Pétrographie
DEF

[...] roche détritique sombre, pauvre en quartz, riche en débris de roches variées et à ciment détritique abondant très chloriteux.

Spanish

Campo(s) temático(s)
  • Petrografía
DEF

Roca detrítica formada por la consolidación de los minerales que resultan de la descomposición del granito.

CONT

Las grauvacas constan de mica, feldespatos y otros constituyentes del granito, incluyendo el cuarzo (aunque en proporciones mucho menores); todos esos elementos se hallan unidos por un cemento también detrítico. Su textura es arenosa y su color grisáceo.

OBS

grauwaka y grauwacke: nombre en alemán.

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