A radiometric dating technique uses the decay of u 238
Radioactive dating is a method of dating rocks and minerals using radioactive isotopes. This method is useful for igneous and metamorphic rocks, which cannot be dated by the stratigraphic correlation method used for sedimentary rocks. Over naturally-occurring isotopes are known.
Radiometric dating calculates an age in years for geologic materials by measuring the presence of a short-life radioactive element, e. The term applies to all methods of age determination based on nuclear decay of naturally occurring radioactive isotopes.
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Uranium—uranium datingmethod of age determination that makes use of the radioactive decay of uranium to uranium; the method can be used for dating of sediments from either a marine or a playa lake environment. Because this method is useful for the period of time from aboutyears to 1, years before the present, it helps in bridging the gap between the carbon dating method and the potassium-argon dating method.
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