"Tilton, George"@en . . "1923Z"^^ . "2010Z"^^ . "1923-06-03Z"^^ . . "Geochemist" . "2010-10-12Z"^^ . "George Tilton"@en . "George Tilton (June 3, 1923 \u2013 October 12, 2010) was a American geochemist who specialized in uranium-lead geochronology. He was the first to measure a U-Pb date on zircon and was instrumental in developing analytical techniques for the measurement of U, Th, and Pb in minerals and rocks, using isotope dilution and mass spectrometry."@en .