Professor of Geology and Planetary Science, Emeritus
Geological and Planetary Sciences Division
A.B., Harvard College, 1950; A.M., Harvard University, 1951; Ph.D., 1957. Visiting Assistant Professor, Caltech, 1959-60; Associate Professor of Geology, 1960-66; Professor, 1966-99; Professor of Geology and Planetary Science, 1999-2002; Professor Emeritus, 2002-. Academic Officer, Geological and Planetary Sciences, 1971-79; Chief Scientist, Jet Propulsion Laboratory, 1979-84; Dean of Graduate Studies, 1984-2000.
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