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Clair Cameron Patterson

De Wikipedia

Clair Cameron Patterson
Clair Cameron Patterson
Naixement	2 de juny de 1922 Mitchellville, Iowa, U.S.
Mort	5 de desembre de 1995 (73 anys) Sea Ranch, California, EEUU
Nacionalitat	Estats Units d'Amèrica
Camps	Geoquímic
Institucions	California Institute of Technology
Alma mater	Grinnell College University of Chicago
Tesi	The Isotopic Composition of Trace Quantities of Lead and Calcium (1951)
Doctor supervisor	Harrison Brown
Conegut	datació urani-plom , edat de la Terra, contaminació per plom
Premis remarcables	Tyler Prize (1995) V. M. Goldschmidt Award (1980) J. Lawrence Smith Medal (1973)

Clair Cameron Patterson (2 de juny de 1922 – 5 de decembre de 1995) Geoquímic estatunidenc. Nascut a Mitchellville, Iowa, Estats Units, va obtenir la graduació al Grinnell College. Més tard va rebre el seu Ph.D. de la Universitat de Chicago, i va passar tota la seva carrera profesional al California Institute of Technology.

In collaboration with George Tilton, Patterson developed the uranium-lead dating method into lead-lead dating, and by using lead isotopic data from the Canyon Diablo meteorite, he calculated an age for the Earth of 4.55 billion years; a figure far more accurate than those that existed at the time and one that has remained largely unchanged since 1956.

Patterson had first encountered lead contamination in the late 1940s as a graduate student at the University of Chicago. His work on this led to a total re-evaluation of the growth in industrial lead concentrations in the atmosphere and the human body, and his subsequent campaigning was seminal in the banning of tetraethyllead in gasoline, and lead solder in food cans.

Contingut

• 1 Early life
• 2 Estimate of the Earth's age
• 3 Tracing the geochemical evolution of the Earth
• 4 Campaign against lead poisoning
• 5 Death
• 6 References
• 7 Further reading
• 8 External links