TERMIUM Plus®

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

age determination [3 records]

Record 1 2003-12-11

English

Subject field(s)
  • Geology
  • Chronology
DEF

Age determination of naturally occurring substances or relicts by any of a variety of methods based on the amount of change, happening at a constant measurable rate, in a component.

OBS

The changes may be chemical, or induced or spontaneous nuclear, and may take place over a period of time.

PHR

Dating of rocks.

French

Domaine(s)
  • Géologie
  • Chronologie
DEF

Action de déterminer [...] l'âge d'une formation géologique, d'un sol, etc.

CONT

Au fur et à mesure qu'ils se déposent, les sédiments enregistrent un certain nombre de données physiques qui peuvent ensuite servir de marqueurs en stratigraphie. Plusieurs méthodes de datation en découlent, en particulier la géochronologie, la magnétostratigraphie, la sismostratigraphie et les diagraphies.

CONT

La méthode du [carbone 14], à période très courte, est utilisée pour la datation de fossiles carbonés ne dépassant pas 100 000 ans.

OBS

Pour dater les couches, on utilise les principes et méthodes de la géochronologie.

OBS

datage : Synonyme rare de «datation».

PHR

Datation de roches.

Spanish

Campo(s) temático(s)
  • Geología
  • Cronología
DEF

Constatación de la edad o época, de una formación geológica.

Save record 1

Record 2 1997-02-25

English

Subject field(s)
  • Geology
  • Chronology
CONT

... it would be wrong to think of these common-lead and common-strontium methods as competing with the conventional dating techniques, since the radioactive decay processes occurred in systems which are unknown or which are not available for study. This is a substantial handicap in evaluating an age determination, but does not illuminate the ultimate origin of the lead and strontium now found in common rocks and minerals.

French

Domaine(s)
  • Géologie
  • Chronologie
OBS

géologiques par la radioactivité (René Coppens) Méthode des halos pléochroïques (pleochroic halos) de (à) l'hélium (helium) du (au) plomb total, commun (techniques modernes, p. 17) (lead) des plombs isotopiques; du strontium (du rubidium et du strontium) (rubidium-strontium) au strontium (techniques modernes, p. 17) du plomb-alpha (lead-alpha: Larsen's)

Spanish

Save record 2

Record 3 1995-12-06

English

Subject field(s)
  • Aquaculture

French

Domaine(s)
  • Aquaculture

Spanish

Campo(s) temático(s)
  • Acuicultura
Save record 3

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