When was potassium argon dating first used

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Potassium is a component in many common minerals and can be used to determine the ages of igneous and metamorphic rocks.The Potassium-Argon dating method is the measurement of the accumulation of Argon in a mineral.These scientists and many more after them discovered that atoms of uranium, radium and several other radioactive materials are unstable and disintegrate spontaneously and consistently forming atoms of different elements and emitting radiation, a form of energy in the process.The original atom is referred to as the parent and the following decay products are referred to as the daughter.

Any dead material incorporated with sedimentary deposits is a possible candidate for carbon-14 dating.For the first time he was able to exactly measure the age of a uranium mineral.When Rutherford announced his findings it soon became clear that Earth is millions of years old.Argon, being an inert gas, usually does not leech out of a mineral and is easy to measure in small samples.This method dates the formation or time of crystallisation of the mineral that is being dated; it does not tell when the elements themselves were formed.

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