American scientist who studied earthquakes and provided seismic evidence that supported the theory of plate tectonics.
He served in the United States Navy as a Seabee in the South Pacific during World War II.
He became chair of the geophysics department at Cornell University in 1971.
He married Gay van der Hoeven in 1964, and the couple had two daughters together, Nell and Amy.
He was a member of the Massillon Washington High School football team which was coached by Paul Brown.