Miller Quarles, Jr. (1905-2010) was a former employee of Petty Geophysical and a Life Member of SEG. He was known as being a competent geophysicist, and one of the early interpreters who employed the Bright Spot method of direct hydrocarbon detection. In his later life Mr. Quarles was known for his interest in life extension technologies.  
Memory Book at http://www.tributes.com - posted by Jack D. Downing August 24, 2010
- Miller was my boss and mentor
- Prior to the Vietnam war, I had worked for Petty in Wyoming and California. When I
- returned from Vietnam in 1970, I worked for Petty Geophysical in San Antonio, directly
- under the tutelage of Miller. He was a very meticulous geophysical
- interpreter, and developer/supporter of the Bright Spot theory. He developed the ESP technology (Extracted Seismic
- Properties). I believe I owe quite a bit of my success in the Oil & Gas Industry to the time Miller took to teach me a
- lot of what he knew. I feel privileged to have known and worked with him.
- --Jack D. Downing 
American Statesman Mar. 4, 2010
QUARLES, Miller W., 95, retired geophysicist, of Austin, formerly of Houston, died Tuesday. Survived by wife Brenda. Services will be private. Arrangements by All Faiths, north location.
Published in Austin American-Statesman on Mar. 4, 2010 
Biography 1950 
Miller Quarles, Jr. received his B.S. and M.S. degree in geology at the California Institute of Technology at Pasedena in 1940 and 1941. He started for United Geophysical Company in the winter of 1941 after a few months employment with Lockheed Aircraft. He went through the routine of computer, surveyor, observer, seismologist, party chief, and supervisor while working in California, England, and the Mid-Continent. He flies his own Bonanza airplane in the course of supervising and belongs to the Aircraft Owners and Pilots' Association as well as the American Association for the Advancement of Science, American Geophysical union, American Association of Petroleum Geologists, Society of Exploration Geophysicists, and Dallas Geophysical and Geological Societies.
- [ http://www.tributes.com/condolences/view_memories/88024190#1825875 Tributes]
- [ http://www.houstonpress.com/2000-09-14/news/miller-s-crossing Houston Press September 2000]
- http://www.lef.org/magazine/mag2002/jul2002_profile_01.htm Life Extension Magazine July 2002]
- [ http://www.texasmonthly.com/content/never-say-die Never Say Die Texas Monthly December 2000]
- [ http://www.tributes.com - posted by Jack D. Downing August 24, 2010 'Memory Book]
- Contributors Geophysics 1950 v.XV n.3 p.560.
- [ http://library.seg.org/doi/pdf/10.1190/1.1437613 Quarles, M., Jr. (1950). ”FAULT INTERPRETATION FROM SEISMIC DATA IN SOUTHWEST TEXAS.” GEOPHYSICS, 15(3), 462–476 doi: 10.1190/1.1437613 ]