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1. use of chemical analysis to estimate the age of geological specimens (noun.act)
| hyponym | : | potassium-argon dating, |
| definition | : | geological dating that relies on the proportions of radioactive potassium in a rock sample and its decay product, argon (noun.act) |
| hyponym | : | carbon dating, carbon-14 dating, radiocarbon dating, |
| definition | : | 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 (noun.act) |
| hyponym | : | rubidium-strontium dating, |
| definition | : | 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 (noun.act) |
| derivation | : | date, |
| definition | : | assign a date to; determine the (probable) date of (verb.cognition) |
| derivation | : | date, |
| definition | : | assign a date to; determine the (probable) date of (verb.cognition) |
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