John Tuzo Wilson

John ('Jock') Tuzo Wilson
Born	October 24, 1908(1908-10-24) Ottawa, Ontario Canada
Died	April 15, 1993(1993-04-15) (aged 84) Toronto, Ontario Canada
Residence	Canada
Nationality	Canadian
Fields	Geophysics & Geology
Institutions	University of Toronto
Alma mater	University of Toronto University of Cambridge Princeton University
Doctoral advisor	Harry Hammond Hess
Doctoral students	Harold Williams
Known for	Theory of Plate tectonics
Notable awards	Officer, Order of Canada Companion, Order of Canada Fellow, Royal Society of Canada Fellow, Royal Society of London Fellow, Royal Society of Edinburgh Legion of Merit Order of the British Empire Ewing Medal, AGU Bucher Medal, AGU Penrose Medal, GSA Wegener Medal, EUG Wollaston Medal, Geological Society Vetlesen Prize, Columbia University Canada Centennial Medal 125th Anniversary Medal (Canada) John J. Carty Award (1975)
Notes

John Tuzo Wilson, CC, OBE, FRS, FRSC, FRSE (October 24, 1908–April 15, 1993) was a Canadian geophysicist and geologist who achieved worldwide acclaim for his contributions to the theory of plate tectonics.

Plate tectonics is the idea that the rigid outer layers of the Earth (crust and part of the upper mantle), the lithosphere, are broken up into numerous pieces or "plates" that move independently over the weaker asthenosphere. Wilson maintained that the Hawaiian Islands were created as a tectonic plate (extending across much of the Pacific Ocean) shifted slowly in a northwesterly direction over a fixed hotspot, spawning a long series of volcanoes. He also conceived of the transform fault, a major plate boundary where two plates move past each other horizontally (e.g., the San Andreas Fault). His name was given to two young Canadian submarine volcanoes called the Tuzo Wilson Seamounts. The Wilson cycle of seabed expansion and contraction (also conversely called the Supercontinent cycle) bears his name.

Birth, education and military

Wilson's father was of Scottish descent and his mother was a third-generation Canadian of French Huguenot descent. He was born in Ottawa, Ontario. He became the first person in Canada to receive a degree in geophysics, graduating from Trinity College at the University of Toronto in 1930. He obtained various other related degrees from St. John's College, Cambridge. His academic years culminated in his obtaining a doctorate in geology in 1936 from Princeton University. After completing his studies, Wilson enlisted in the Canadian Army and served in World War II. He retired from the army with the rank of Colonel.

Career and awards

In 1969, he was made an Officer of the Order of Canada and was promoted to the rank of Companion of that order in 1974. Wilson was awarded the John J. Carty Award from the National Academy of Sciences in 1975. In 1978, he was awarded the Wollaston Medal of the Geological Society of London and a Gold Medal by the Royal Canadian Geographical Society. He was a Fellow of the Royal Society of Canada and of the Royal Society of London. He was the Principal of Erindale College at the University of Toronto and was the host of the television series, The Planet of Man.

He also served as the Director General of the Ontario Science Centre from 1974-1985. He and his plate tectonic theory are commemorated on the grounds outside by the Centre by a giant "immovable" spike indicating the amount of continental drift since Wilson's birth.

The eponymous John Tuzo Wilson Medal of the Canadian Geophysical Union recognizes achievements in geophysics.

Selected publications

• Wilson, Tuzo (14 July 1962). "Cabot Fault, An Appalachian Equivalent of the San Andreas and Great Glen Faults and some Implications for Continental Displacement". Nature 195 (4837): 135–138. Bibcode 1962Natur.195..135W. doi:10.1038/195135a0. 
• Wilson, J. Tuzo (9 February 1963). "Evidence from Islands on the Spreading of Ocean Floors". Nature 197 (4867): 536–538. Bibcode 1963Natur.197..536W. doi:10.1038/197536a0. 
• Wilson, J. Tuzo (1963). "A Possible Origin of the Hawaiian Islands". Canadian Journal of Physics 41 (6): 863–870. Bibcode 1963CaJPh..41..863W. doi:10.1139/p63-094. http://www.mantleplumes.org/WebDocuments/Wilson1963.pdf. 
• Wilson, J. Tuzo (24 July 1965). "A new Class of Faults and their Bearing on Continental Drift". Nature 207 (4995): 343–347. Bibcode 1965Natur.207..343W. doi:10.1038/207343a0. http://www.rpi.edu/~mccafr/plates/reading/wilson_1965.pdf. 
• Vine, F. J.; Wilson, J. Tuzo (22 October 1965). "Magnetic Anomalies over a Young Oceanic Ridge off Vancouver Island". Science 150 (3695): 485–9. Bibcode 1965Sci...150..485V. doi:10.1126/science.150.3695.485. PMID 17842754. 
• Wilson, J. Tuzo (August 13, 1966). "Did the Atlantic close and then re-open?". Nature 211 (5050): 676–681. Bibcode 1966Natur.211..676W. doi:10.1038/211676a0. http://www.geology.cwu.edu/facstaff/huerta/g501/pdf/Wilson1966.pdf. 
• Wilson, J. Tuzo (1966). "Are the structures of the Caribbean and Scotia arc regions analogous to ice rafting?". Earth and Planetary Science Letters 1 (5): 335–338. Bibcode 1966E&PSL...1..335T. doi:10.1016/0012-821X(66)90019-7. 
• Wilson, J. Tuzo (December 1968). "A Revolution in Earth Science". Geotimes (Washington DC) 13 (10): 10–16. 
• Wilson, J. Tuzo (1971). "Du Toit, Alexander Logie". Dictionary of Scientific Biography. 4. pp. 261–263. 

See also

• List of geophysicists
• Science and technology in Canada
• Supercontinent cycle

External links

• "J. Tuzo Wilson". GSA Today. September 2001. http://gsahist.org/gsat/gt01sep24_25.htm. 

Academic offices
Preceded by John S. Proctor	Chancellor of York University 1983-1986	Succeeded by Larry Clarke
Professional and academic associations
Preceded by Henry Duckworth	President of the Royal Society of Canada 1972-1973	Succeeded by Guy Sylvestre