Argon dating

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The type of radiometric dating used depends greatly on the approximate time period you are studying and so varies depending on if the material you are studying is an artifact or a fossil. Radiometric dating is the term for a method to determine the age of an object based on the concentration of a particular radioactive isotope contained within it.Example sentence: One of the early tests of radiometric dating was to estimate the age of the wood from an ancient Egyptian artifact, for which the age was already known from historical documents.In the minerals from Mauna Kuwale sporadic occurrences of inclusions have been noted in biotites and hornblendes, and crushing of the mineral releases the excess radiogenic argon.The determination of the age of such a material would give an old age, and thus account for the anomalies found.

To illustrate these efforts, dating results from a rhyodacite of Mauna Kuwale, Oahu, Hawaii, are reported.Another example of radiometric dating is the dating of the age of geological formations on earth.The oldest known rocks on the earth that have been analyzed, have been dated back some 4.404 billion years.We have found that gas released from such inclusions by crushing contains radiogenic argon, and that the constituent minerals give very old potassium-argon ages (circa 800 million years).Similar gaseous inclusions have been noted in a variety of other lava phenocrysts, and their presence in a dated sample may produce an anomalous old age.

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