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| 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. Picture Stats: Views: 172 Filesize: 24.56kB Height: 301 Width: 900 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=46839 |