Robert Sinclair Dietz (September 14, 1914 - May 19, 1995) was Professor of Geology at Arizona State University. Dietz was a geophysicist and oceanographer who conducted pioneering research along with Harry Hess concerning seafloor spreading as early as 1960 - 1961. While at the Scripps Institute of Oceanography he observed the nature of the the Emperor chain of seamounts that extended from the northwest end of the Hawaiian Island-Midway chain and speculated over lunch with Robert Fisher in 1953 that something must be carrying these old volcanic mountains northward like a conveyer belt.^{[1] (http://en.wikipedia.org/wiki/Robert_S._Dietz#endnote_UCSD)} September 14 is the 257th day of the year (258th in leap years). ... 1914 is a common year starting on Thursday. ... May 19 is the 139th day of the year in the Gregorian Calendar (140th in leap years). ... 1995 was a common year starting on Sunday of the Gregorian calendar. ... Geology (from Greek γη- (ge-, the earth) and λογος (logos, word, reason)) is the science and study of the Earth, its composition, structure, physical properties, history, and the processes that shape it. ... Arizona State University (ASU) is (as of 2004) the third-largest university in the United States with a student body of 57,543. ... Geophysics, the study of the earth by quantitative physical methods, especially by seismic reflection and refraction, gravity, magnetic, electrical, electromagnetic, and radioactivity methods. ... Oceanography (from Ocean + Greek γράφειν = write), also called oceanology and marine science is the study of the earths oceans and their interlinked ecosystems and chemical and physical processes. ... Harry Hammond Hess (1906-1969) was an American geologist. ... Seafloor spreading is a part of the theory of plate tectonics. ... A seamount is a mountain rising from the seafloor that does not reach to the surface of the ocean. ... State nickname: The Aloha State Other U.S. States Capital Honolulu Largest city Honolulu Governor Linda Lingle Official languages Hawaiian and English Area 28,337 km² (43rd)  - Land 16,649 km²  - Water 11,672 km² (41. ... Midway Atoll (also known as Midway Island or Midway Islands) is a 6. ...

In later work he became interested in meteorite impacts and was the first to recognize the Sudbury Basin as an ancient impact event. Worlds second largest Meteorite in Culiacan, Mexico A meteorite is a relatively small extra-terrestrial body that reaches the Earths surface. ... The Sudbury Crater or Basin is the oval structure visible in this image. ... Artists impression of a major impact event. ...

Publications

• Dietz, Robert S. "Earth, Sea, and Sky: Life and Times of a Journeyman Geologist." Annual Review of Earth and Planetary Science 22 (1994), 1-32.
• Dietz, Robert S., "In Defense of Drift," The Sciences, vol. 23, Nov.-Dec. 1983, p. 26.
• Dietz, Robert S., Sudbury Structure as an Astroprobleme, University of Chicago, 1964
• Dietz, Robert S. and scientific illustrator John C. Holden, Creation/Evolution Satiricon: Creationism Bashed, Winthrop, WA: Bookmaker, 1987

References

1. ^ Biography from USCD (http://scilib.ucsd.edu/sio/archives/siohstry/dietz-biog.html)
2. Dietz and Hess (http://geowords.com/histbooknetscape/g02.htm)