Robert B. Hargraves (August 11, 1928 – March 21, 2003) was an Americangeologist who worked as aprofessor atPrinceton University.^[1]

Hargraves was born inDurban,South Africa. He started in his career asmining geologist in 1948, after receiving his BS fromNatal University. In 1952, heemigrated to the United States, and after service in theUnited States Army he went tograduate school at Princeton. After completion of his Ph.D. in 1959,^[2] he first worked atUniversity of the Witwatersrand and then at Princeton.^[1]

Hargraves was a specialists in rockmagnetism andpetrology. In his career he discovered many impact features onEarth by studying the effects of the impact event on the local rock strata. He was actively involved in the study of rocks from theMoon, returned to Earth by theApollo missions. He also worked on theViking program andPathfinder mission to the planetMars.^[1]

Acrater on Mars is named in his honor.^[3]

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