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Age of the Earth (view source)

Revision as of 04:01, May 23, 2011

186 bytes added ,  04:01, May 23, 2011
→‎Increasing ages: Using circular logic -- assuming that decay rates somehow remained constant despite necessarily changing physical characteristics as time approached the origin --
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By about 1930, J. H. Jeans was arguing for an age of the Earth of around 2,000 million years.<ref>Universal History of the World, p.76.</ref>
 
By about 1930, J. H. Jeans was arguing for an age of the Earth of around 2,000 million years.<ref>Universal History of the World, p.76.</ref>
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The currently-proposed age is 4.5 billion years, based in part on rocks dated by [[Potassium-argon dating|Potassium-argon (K:Ar) dating]] and other radiometric methods.<ref>Peck, 2000, p.376.</ref>
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Using circular logic -- assuming that decay rates somehow remained constant despite necessarily changing physical characteristics as time approached the origin -- some insist that the Earth is 4.5 billion years based on an implausible assumption of constancy in [[Potassium-argon dating|Potassium-argon (K:Ar) decay rates]] and other radiometric methods.<ref>Peck, 2000, p.376.</ref>
    
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