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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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Most scientists today believe that life has existed on the earth for billions of years.

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These long time periods are computed by measuring the ratio of daughter to parent substance in a rock and inferring an age based on this ratio.The potassium-argon method is attractive for dating volcanics since it can be applied to rocks of Pleistocene age and older, thus encompassing important periods of general volcanic activity.However it has been found that dates obtained on whole rocks and on included minerals frequently show gross discordances.Determinations on several minerals and the whole rock of this ridge give a concordant age of 2.3 ± 0.3 million years, excluding some few results on minerals which show old age anomalies.

It has been noted that xenoliths in certain Hawaiian volcanics contain fluid inclusions which show evidence of formation at depth.

This calls the whole radiometric dating scheme into serious question.

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