How was Willard Frank Libby awarded the Noble Prize?

Name: Willard Frank Libby. 
Country: American
Date of Birth: December 17, 1908.
Date of Death: September 8, 1980.
The subject of Study: Carbon-14 dating isotopic fractionation tritium uranium
Noble Prize Year: Nobel Prize for Chemistry in 1960 for His technique for using carbon-14 to determine age in archaeology, geology, geophysics, and other scientific fields.