Definition of potassium–argon dating in English:

potassium–argon dating

noun

mass nounGeology
  • A method of dating rocks from the relative proportions of radioactive potassium-40 and its decay product, argon-40.

    • ‘We now consider in more detail one of the problems with potassium-argon dating, namely, the branching ratio problem.’
    • ‘Using Potassium-Argon dating, the newly formed rocks gave ages between 0.5 and 2.8 million years.’
    • ‘Basically, using Potassium-Argon dating, the scientists who erred found halos, or areas in the their samples that were of different geologic ages.’