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John (Jack) Stewart


1928 - 2013 Obituary Condolences
John (Jack) Stewart Obituary
John (Jack) Stewart
August 7, 1928-March 1, 2013
Resident of Menlo Park
John Harris Stewart (Jack) passed away on March 1, 2013. Jack was born on August 7, 1928 in Berkeley, California to George and Theodosia Stewart. The family, including his older sister Jill, travelled extensively as Jack's father, a noted author, conducted research for numerous books. Jack graduated from Berkeley High School in 1946, then studied at the University of New Mexico, obtaining a degree in geology in 1950, with minors in math and anthropology. In 1951 Jack began his 62 year career with the US Geological Survey. Jack obtained a doctorate in geology from Stanford in 1961.
In 1962 Jack married Sally Dwight and they had two children, Ed in 1964 and William in 1966. The family spent many enjoyable summers in Nevada where Jack performed extensive field work.
Jack was the preeminent authority on the geology of the Great Basin and Colorado Plateau regions of Colorado, Nevada, New Mexico and Arizona. His work in Nevada led to the preparation of the first comprehensive geologic map of Nevada. Jack's findings had significant impact on strategies in the search for, and identification of, new mineral resources. For his outstanding achievements and extensive contributions to knowledge regarding the geology of western North America, he was granted the Distinguished Service Award by the Department of the Interior in 1994. Jack was respected by colleagues for his dedication to his profession. He was a scientist at heart, who loved to walk, and study the environment.
In 1990 Jack married Joyce Colbath, and they spent 22 years together, hiking and exploring throughout the world.
Jack is survived by his wife Joyce Stewart, sister Jill Evenson, sons Ed(Tracy) and William, his stepchildren Mary McCurdy(Kevin), John Plungy(Cheri), Elizabeth Ramaley(Lee), Mark Plungy(Lisa), his grandchildren Samuel and Teddie Stewart, and his step-grandchildren Emilie Plungy, Helen and Brigid McCurdy, Clare, Stephen and Madeline Ramaley, and Julia and Matthew Plungy. Jack is also survived by numerous nieces and nephews.
In his memory, Jack's family appreciates donations to the Truckee-Donner Land Trust.

Published in San Jose Mercury News/San Mateo County Times on Mar. 14, 2013
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