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Dating method that uses heat to measure the amount of radioactivity accumulated by a rock or stone tool since it was last heated.

The non-radiogenic stable isotopes, osmium orare used as the denominator in the ratios on the three-isotope plots.

This is called Therefore the characteristic property of the radioisotope, namely its radioactivity can act as a tag or label, which permits the fate of the element or its compound containing this element to be traced through a series of chemical or physical changes.

Some of the application of tracer techniques are discussed below.

Radiometric dating is also used to date archaeological materials, including ancient artifacts.

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