20th-century American geologists

Charles Frederick Rogers (December 30, 1921 – disappeared June 23, 1965) was an American seismologist, pilot, and murder suspect who disappeared in June 1965 after police discovered the dismembered bodies of his elderly parents in the refrigerator of the Houston home all three shared, in what the media later dubbed "The Icebox Murders". Rogers has never been found and was declared dead in absentia in July 1975. He remains the only suspect in the murders, which are still considered unsolved.

Allan Verne Cox (December 17, 1926 – January 27, 1987) was an American geophysicist. His work on dating geomagnetic reversals, with Richard Doell and Brent Dalrymple, made a major contribution to the theory of plate tectonics. Allan Cox won numerous awards, including the prestigious Vetlesen Prize, and was the president of the American Geophysical Union. He was the author of over a hundred scientific papers, and the author or editor of two books on plate tectonics. On January 27, 1987, Cox died in an apparent suicide.