Brent Dalrymple

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Gary Brent Dalrymple
SCIENTIST BRENT DALRYMPLE ADJUSTING MASS SPECTROMETER VACUUM FLIGHT TUBE, 1971. - U.S. Geological Survey, Rock Magnetics Laboratory, 345 Middlefield Road, Menlo Park, San Mateo HAER CAL,41-MENPA,5-31.tif
Brent Dalrymple adjusting mass spectrometer vacuum flight tube, 1971
Born (1937-05-09) May 9, 1937 (age 81)
Alhambra, California
Residence Corvallis, Oregon
Nationality American
Known for Research regarding the history of Earth's magnetic field and radiometric dating
Spouse(s) Sharon[1]
Awards Fellow of the American Geophysical Union since 1975, and was the organizations' president from 1990 to 1992; received an honorary doctorate from Occidental College in 1993
Scientific career
Fields Geology
Thesis Potassium-argon dates and the Cenozoic chronology of the Sierra Nevada, California (1963)
Influences Allan V. Cox

G. Brent Dalrymple (born May 9, 1937) is an American geologist, author of The Age of the Earth and Ancient Earth, Ancient Skies, and National Medal of Science winner.[2]

He was born in Alhambra, California. After receiving a Ph.D. from University of California, Berkeley, Dalrymple went to work at the U.S. Geological Survey (USGS) in Menlo Park, California. In 1994 he left the USGS to accept a position at Oregon State University, where he served on the faculty until retiring in 2001. He is a member of the National Academy of Sciences.

In 2003, Dalrymple was awarded the National Medal of Science.[3] He was presented with the Medal at a ceremony in 2005.[4]

Selected publications

  • Dalrymple, Brent (1994). The Age of the Earth. Stanford University Press. ISBN 0-8047-2331-1.
  • Dalrymple, Brent (2004). Ancient Earth, ancient skies: the age of Earth and its cosmic surroundings. Stanford University Press. ISBN 0-8047-4933-7.
  • Allan, Cox; Richard R. Doell; G. Brent Dalrymple (15 June 1963). "Geomagnetic Polarity Epochs and Pleistocene Geochronometry". Nature. 198 (4885): 1049–1051. doi:10.1038/1981049a0.


  1. ^ "G. Brent Dalrymple". Pennsylvania State University. 2012. Retrieved 27 January 2014.
  2. ^ Lubick, Naomi (April 2005). "G. Brent Dalrymple: Deep time in a tarpaper shack". Geotimes. Retrieved 6 March 2009.
  3. ^ "National Science Foundation - The President's National Medal of Science". Retrieved 2014-07-26.
  4. ^ "NCSE Supporter Dalrymple receives National Medal of Science". National Center for Science Education. February 16, 2005. Retrieved 2008-05-17.


  • American Geophysical Union (includes photo)

External links

  • A Natural History of Time by Brent Dalrymple
  • Brent Dalrymple Oral History Interview

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