Chemical dating techniques

Argon, a noble gas, is not commonly incorporated into such samples except when produced in situ through radioactive decay.

Particular isotopes are suitable for different applications due to the types of atoms present in the mineral or other material and its approximate age.

One of the most widely used is potassium–argon dating (K–Ar dating).

Potassium-40 is a radioactive isotope of potassium that decays into argon-40.

For example, techniques based on isotopes with half lives in the thousands of years, such as carbon-14, cannot be used to date materials that have ages on the order of billions of years, as the detectable amounts of the radioactive atoms and their decayed daughter isotopes will be too small to measure within the uncertainty of the instruments.

One of the most widely used and well-known absolute dating techniques is carbon-14 (or radiocarbon) dating, which is used to date organic remains.

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