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History
Geologists
Early explorers
R. A. F. Penrose (1863-1931)
Ph.D. Harvard
Dumble hired Penrose in 1888 to join the geological survey team in Texas. He was assigned to the eastern section and worked mainly in the Tertiary formations.
One expedition took Penrose, Dumble and Hill down the Colorado River. His notebooks provide a detailed description of the geology observed.
Penrose went on to become the first president of the Geological Society of America.
Learn more about Penrose and see: Fairbanks, H. R. and Berkey, C. P., Life and Letters of R. A. F. Penrose, Jr. New York: Geological Society of America, 1952.
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Image of the Colorado River by L. Zachos, 2002
Notebook of Richard Alexander Fullerton Penrose
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