TERMIUM Plus®

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

AGE ROCHE TOTALE [1 record]

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Alphabetical list of terms

Record 1 2011-11-15

English

Subject field(s)
  • Petrography
  • Chronology
DEF

Age determined by the examination of a portion of rock rather than individual minerals.

CONT

A Rb-Sr whole rock age of 2.2 Ga ... has been obtained for volcanic rocks ...

OBS

A calculated age for the whole rock would give the apparent age of formation whereas the individual mineral might give discordant ages

French

Domaine(s)
  • Pétrographie
  • Chronologie
DEF

Âge calculé à partir d'un fragment de roche plutôt qu'à partir d'un constituant minéral particulier.

CONT

Les roches volcaniques [...] ont livré un âge Rb-Sr sur roche totale de 2,2 Ga [...]

OBS

La roche totale donne l'âge apparent de la formation, tandis que deux minéraux de la même roche peuvent donner deux âges différents.

Spanish

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