Potassium–argon dating, abbreviated K–Ar dating, is a radiometric dating method used in geochronology and archaeology. It is based on measurement of the. One of the most widely used dating methods is the potassium-argon method, which has been applied to 'dating' rocks for decades, especially. The potassium-argon (K-Ar) isotopie dating method can provide precise and accurate numerical ages on suit- able rocks, especially igneous rocks, over a wide. potassium–argon dating* A dating technique  for certain rocks that depends within it and that all the argon present is formed by the decay of potassium–
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