- Types:
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potassium-argon dating
geological dating that relies on the proportions of radioactive potassium in a rock sample and its decay product, argon
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carbon dating, carbon-14 dating, radiocarbon dating
a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon-14; believed to be reliable up to 40,000 years
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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
