rubidium-strontium dating

(redirected from Rubidum-Strontium dating)
Also found in: Thesaurus, Encyclopedia.

rubidium-strontium dating

n
(General Physics) a technique for determining the age of minerals based on the occurrence in natural rubidium of a fixed amount of the radioisotope 87Rb which decays to the stable strontium isotope 87Sr with a half-life of 4.7 × 1011 years. Measurement of the ratio of these isotopes thus gives the age of a mineral, for ages of up to about 4 × 109 years
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.rubidium-strontium dating - geological dating based on the proportions of radioactive rubidium into its decay product strontium; radioactive rubidium has a half-life of 47,000,000,000 years
dating, geological dating - use of chemical analysis to estimate the age of geological specimens