What is the k ar dating method gibson banjo dating

23-Apr-2018 10:29

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However, we cannot rely on all the argon being lost, and if it is not then when we apply K-Ar dating this will give us an essentially arbitrary date somewhere between the formation of the rock and the metamorphosis event.

For these reasons K-Ar dating has largely been superseded by Ar-Ar dating, which will be the subject of the next article.

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As a result under most circumstances we don't expect to find much argon in igneous rocks just after they've formed.K has a half-life of 1.248 billion years, which makes it eminently suitable for dating rocks.