Skip to main content
U.S. flag

An official website of the United States government

Charles R Bacon, PhD


Current Research Interests Petrology, geochemistry, physical volcanology, and eruptive histories of calderas, emphasizing detailed study of Crater Lake, Oregon, and Veniaminof and Aniakchak caldera volcanoes, Alaska Peninsula.  General interest in volcanic and magmatic processes.  Secondary Ion Mass Spectrometry applied to geologic and biologic materials.  Landscape evolution in interior Alaska.

Professional Experience

  • Senior Research Geologist Emeritus, U.S. Geological Survey, October 2014–present.

  • Research Geologist with USGS in Menlo Park 1975–2014, Senior Scientist 2004–2014

  • Research Associate, Lawrence Berkeley Laboratory, 1975

  • Co-Director, USGS–Stanford Ion Microprobe Laboratory (SUMAC), October 2008-September 2014

  • Geologic mapping of Quaternary volcanic fields and caldera volcanoes in California, Oregon, and Alaska

  • Isotope geochemistry of magmatic systems

  • Microbeam chemical analysis by electron and ion microprobe applied to igneous rocks and biological materials

  • Physical volcanology of products of explosive eruptions

  • Petrologic and geochemical research on volcanic rocks and magmatic processes

  • Mentorship/Outreach

  • Research and Teaching Assistantships, University of California, Berkeley, 1970-74

  • Visiting Professor, California Institute of Technology, winter term 1988

Education and Certifications

  • University of California, Berkeley, PhD, Geology, 1975

  • Stanford University, BS, Geology, 1970

Affiliations and Memberships*

  • Member, Geochemical Society, International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI)

  • NAS/NRC Continental Scientific Drilling Committee, 1983-86

  • USGS Geologic Division Science Advisory Committee, 1988-89, Chair 1990-91

  • NSF Petrology and Geochemistry Panel, 1994-97

  • AGU VGP Section Nominating Committee, 1996, Chair 1998

  • MSA Fellows Committee, 1997-99; MSA Nominating Committee, 2007-2009

  • Associate Editor, Geological Society of America Bulletin, 1985-90

  • Associate Editor, American Mineralogist, 1989-92

  • Editorial Board, Geology, 1993-95

  • Editorial Board, Journal of Volcanology and Geothermal Research, 1998-2007

  • Board of Directors, Berkeley Geochronology Center, 2009-present.

Honors and Awards

  • Fellow, American Geophysical Union, Mineralogical Society of America, Geological Society of America

  • President-elect, Volcanology, Geochemistry, and Petrology Section of the American Geophyscial Union, 7/02-6/04; President, 7/04-6/06

  • IAVCEI quadrennial L.R. Wager Medal, 1987

  • AGU VGP Section N.L. Bowen Award, 1999

  • USGS Shoemaker Awards for Communication Product Excellence, 2002, 2004

  • US Department of the Interior Meritorious Service Award, 2004

  • U.S. Department of the Interior Superior Service Award, 2009 (from National Park Service)

Science and Products

*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government