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Posted by / 16-Apr-2017 04:45

Therefore the amount of argon formed provides a direct measurement of the amount of potassium-40 present in the specimen when it was originally formed.

Because argon is an inert gas, it is not possible that it might have been in the mineral when it was first formed from molten magma.

In addition, it is not formed as the result of a radioactive decay process.

The creationist "argon escape" theory does not support their young earth model.) The argon age determination of the mineral can be confirmed by measuring the loss of potassium.

In old rocks, there will be less potassium present than was required to form the mineral, because some of it has been transmuted to argon.

Because of radioactivity, the fraction of rubidium-87 decreases from an initial value of 100% at the time of formation of the mineral, and approaches zero with increasing number of half lives.

At the same time, the fraction of strontium-87 increases from zero and approaches 100% with increasing number of half-lives.

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