George Tilton (June 3, 1923 – October 12, 2010) was an American geochemist who specialized in uranium-lead geochronology.
[2] He enrolled at Blackburn College in Illinois, but his education was interrupted in 1943 when was called to serve in the US Army.
Fellow graduate student Clair Patterson and he achieved two momentous results: the first accurate age of Earth and the solar system based on Pb isotope ratios, and the ages for terrestrial rocks using U-Pb isotopic dates.
He was a researcher at the Carnegie Institution of Washington from 1951-1965, working on U-Pb dating and the use of isotope tracers.
In 1965 George accepted the offer of a professorship at the University of California, Santa Barbara.