Thread: How old is this planet ?
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Old 10-05-2006, 01:33 PM   #9
joepole
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Dating for millions of years
Uranium-based techniques (Uranium-Thorium or Uranium-Lead) are good for old atrifacts, but aren't always doable.

Google "geochronology" for more info.

http://en.wikipedia.org/wiki/Geochronology
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