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Potassium argon dating rocks.

Potassium argon dating rocks. First of all, Argon is inert.

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This paper is now considered to be a classic paper.

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When the concentrations of the various K isotopes are measured, the results are always the same.

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Because the spike is precisely known, the 40 Ar is determined by comparison to it.

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Plutonic rocks are rocks are rocks that have solidified below the ground.

What happens if the results conflict?

For shorter timescales, it is unlikely that enough 40 Ar will have had time to accumulate in order to be accurately measurable.

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As the rocks cool, argon 40 Ar begins to accumulate.

Archeologists and scientists are dependent upon the use of dating methods to ascertain the approximate age of an artifact or ruin he or she finds.

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