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![]() Date: 2005-09-06 13:14:58Geological history of Earth Radiometric dating Cratons Gemstones Zircon Uranium-lead dating Superior craton Radiogenic nuclide Jack Hills Geology Historical geology Geochronology | Source URL: www.geology.wisc.eduDownload Document from Source WebsiteFile Size: 196,93 KBShare Document on Facebook |