Directory For a Sex Photos : science-junkie: Uranium-thorium dating Uranium-Thorium dating is an absolute dating technique which uses the properties of the radio-active half-life of Uranium-238 and Thorium-230. The half-life of uranium—238 is 4,470,000,000 years, that is, in that
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» science-junkie: Uranium-thorium dating Uranium-Thorium dating is an absolute dating technique which uses the properties of the radio-active half-life of Uranium-238 and Thorium-230. The half-life of uranium—238 is 4,470,000,000 years, that is, in that
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