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SlideshowReport

Some of the most commonly used radiometric dating methods

Description
Parent Isotope Half-Life Wears) Parent Isotope Abundant In Potassium-40 1.3 billion Potassium-rich minerals including feldspar, mica Rubidium-87 48.8 billion Potassium-rich minerals Uranium-238 4.5 billion Uranium ores: zircon and other minor minerals Carbon-14* 5730 Organic matter, atmospheric carbon dioxide, dissolved carbonate

Because of the relatively short half-life of carbon, it is used primarily in archaeological, not fossil, dating.
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