K-ar dating accuracy

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Potassium—argon datingabbreviated K—Ar datingis a radiometric dating method used in geochronology and archaeology. It is based on measurement of the product of the radioactive decay of an isotope of potassium K into argon Ar. Potassium is a common element found in many materials, such as micasclay mineralstephraand evaporites.

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In potassium-argon dating is grounded in many minerals because we need to the decay of potassium-argon method used in agreement.

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Potassium, an alkali metal, the Earth's eighth most abundant element is common in many rocks and rock-forming minerals. The quantity of potassium in a rock or mineral is variable proportional to the amount of silica present. Therefore, mafic rocks and minerals often contain less potassium than an equal amount of silicic rock or mineral. Potassium can be mobilized into or out of a rock or mineral through alteration processes.

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