| Date | Text | |
|---|---|---|
19 May 1995
Robert S. Dietz |
death Robert S. Dietz Died 19 May 1995 at age 80 (born 14 Sep 1914). Robert Sinclair Dietz was an American geophysicist and oceanographer who set forth a theory (1961) of seafloor spreading (a term he coined), in which new crustal material continually upwells from the Earth's depths along the mid-ocean ridges and spreads outward at a rate of several inches per year. While a student Dietz identified the Kentland structure in Indiana as a meteoric impact site. His professors steered him toward marine geology. He became the founder and director of the Sea Floor Studies Section at the Naval Electronics Laboratory (1946-1963). He also achieved prominence by studying meteorite craters, both on Earth and on the moon and arguing that these impact craters were common. He died of a heart attack. |
OnThisDay.net