Kenneth S. Deffeyes

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Kenneth S. Deffeyes
Born(1931-12-26)26 December 1931
Oklahoma City
Died29 November 2017(2017-11-29) (aged 85)[1]
La Jolla, California
NationalityUnited States
Occupationgeologist, author, professor
TitleProfessor Emeritus

Kenneth S. Deffeyes was a geologist who worked with M. King Hubbert, the creator of the Hubbert peak theory, at the Shell Oil Company research laboratory in Houston, Texas. Deffeyes holds a B.S. in petroleum geology from the Colorado School of Mines and a Ph.D. in geology from Princeton University, studying under F.B. van Houten.[2] In 1967 he began teaching at Princeton, where he was professor emeritus. He claimed Chickasaw ancestry.[3]

"Deffeyes is a big man with a tenured waistline. His hair flies behind him like Ludwig van Beethoven. He lectures in sneakers. His voice is syllabic, elocutionary, operatic. ... His surname rhymes with 'the maze.' "—John Mcphee, Basin and Range (1981) [4]

In John McPhee's 1981 book Basin and Range, about the origin of Basin and Range topography, Deffeyes teaches geology to McPhee and his readers by analyzing road cuts and the exposed geologic strata that resulted from the construction of Interstate highway 80.[5] On one trip, Deffeyes picked up a piece of Triassic shale near Paterson, New Jersey to demonstrate a common geologic field-test: he put the shale in his mouth and chewed it. "If it's gritty, it's a silt bed, and if it's creamy it's a shale," Deffeyes said. McPhee tried it and said he wouldn't "have thought to put it in coffee." [4]

Deffeyes Ph.D. dissertation research concerned volcanic ashfalls in Nevada that had been altered to zeolites. Not much was known about the potential uses of zeolites, so Deffeyes wrote a review paper on zeolites in sedimentary rocks. This resulted (according to both Deffeyes and John McPhee) in the founding of the natural zeolite industry. Zeolites have important uses in water purification, as catalysts in the petrochemical industry, and as molecular sieves.[3][4]

He was the author of Hubbert's Peak, published in 2001. In 2005 he published the book Beyond Oil: The View from Hubbert's Peak. On February 11, 2006 Deffeyes claimed that world oil production had peaked on December 16, 2005.[6]


  • "Crude oil is much too valuable to be burned as a fuel."[7]
  • Of world peak oil production: "There is nothing plausible that could postpone the peak until 2009. Get used to it."[8]
  • "The economists all think that if you show up at the cashier's cage with enough currency, God will put more oil in ground."[9]

See also[edit]

Other peak oil advocates[edit]


  1. ^ Kenneth Deffeyes, influential geoscientist and Princeton graduate alumnus, dies at 85
  2. ^ Kenneth S. Deffeyes profile, 2007
  3. ^ a b About Ken Deffeyes at his Princeton Peak Oil site
  4. ^ a b c John McPhee, Basin and Range. 1981, Farrar, Straus & Giroux. ISBN 0374109141
  5. ^ McPhee, John. Basin and Range outline Archived 2012-06-22 at the Wayback Machine
  6. ^ February 11, 2006 Archived October 28, 2007, at the Wayback Machine Deffeyes Peak Oil site
  7. ^ Excerpt, Hubbert's Peak
  8. ^ Excerpt, Hubbert's Peak
  9. ^ Experts: Petroleum May Be Nearing a Peak Associated Press, 2005

External links[edit]