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Rubidium-strontium dating
/ɹuːbˈɪdiəmstɹˈɒntiəm dˈeɪtɪŋ/
/ɹuːbˈɪdiəmstɹˈɑːntiəm dˈeɪɾɪŋ/Rubidium-strontium dating
01
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
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