Relative dating geology examples

One of the most widely used is potassium–argon dating (K–Ar dating).

However, it can be used to confirm the antiquity of an item.

Many factors can spoil the sample before testing as well, exposing the sample to heat or direct light may cause some of the electrons to dissipate, causing the item to date younger.

Because of these and other factors, Thermoluminescence is at the most about 15% accurate.

Carbon-14 moves up the food chain as animals eat plants and as predators eat other animals. It takes 5,730 years for half the carbon-14 to change to nitrogen; this is the half-life of carbon-14.

After another 5,730 years only one-quarter of the original carbon-14 will remain.

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Argon, a noble gas, is not commonly incorporated into such samples except when produced in situ through radioactive decay.

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