Jeffrey Phillips

Biography

Jeff Phillips is a Scientist Emeritus (Geophysics) in the Geology, Geophysics, and Geochemistry Science Center in Denver, Colorado. He develops and maintains the USGS potential-field geophysical software package for the PC, a public-domain resource for the geophysical community. His research focuses on potential-field theory and its application to geologic problems, including water, mineral, and energy resources.

Dr. Phillips has conducted geophysical research for over 40 years in support of USGS programs on Energy and Mineral Resources. He is a specialist in the analysis of potential-field (gravity and magnetic) geophysical data. He has published more than 70 professional reports and presented more than 60 talks at scientific meetings. Dr. Phillips has worked extensively on Energy Resource studies in Alaska and recently participated in Central Asia Mineral Resource Assessments. His recent work for other Federal Agencies includes a dam safety study in California and a geophysical investigation at the former Nevada Test Site. He is a member of the Society of Exploration Geophysicists and the American Geophysical Union.

Education

  • A.B. (1970), University of California, Berkeley (Geology)
  • M.S. (1973), Stanford University (Geophysics)
  • Ph.D. (1975), Stanford University (Geophysics)

Professional Studies/Experience

  • 1973: U.S. Geological Survey (Menlo Park, CA, and Beaufort Sea, AK)
  • 1975-1991: U.S. Geological Survey (Reston, VA):
  • 1980-1986: Branch Representative, Eastern Region, Branch of Geophysics
  • 1991-Present: U.S. Geological Survey (Denver, CO)
  • 1991-2014: Research Geophysicist
  • 2014-Present: Scientist Emeritus

Scientific/Oral Presentations, Abstracts

McCafferty, A.E., Bedrosian, P.A., and Phillips, J.D., 2019, Critical Mineral Systems Under Cover: Insights from Magnetic, Gravity, and Magnetotelluric 3D Inversion Models, Southern Midcontinent, USA, in Society for Geology Applied to Mineral Deposits (SGA), 2019, Volume 3 - New discoveries – new views - Advances in the Science of Mineral Exploration, p. 1132-1135. 15th SGA Biennial Meeting, Glasgow, 27-30 August, 2019. [Link]

McCafferty, A.E., Phillips, J.D., and Ayuso, R.A., 2017, Crustal architecture beneath the southeast Missouri (USA) Mesoproterozoic Iron-Oxide province from geophysical models: Proceedings of the 14th SGA Biennial Meeting, 20-23 August 2017, Quebec City, Canada: p. 871-874. [Link]

Phillips, J.D., and Simpson, R.W., 2015, Sharpening the boundaries - 3D terracing applied to physical property inversions: Society of Exploration Geophysicists 2015 Technical Program Expanded Abstracts, p. 1536-1540. [Link]

Phillips, J.D., 2010, Estimating structural dip from gravity and magnetic profile data: Society of Exploration Geophysicists, 2010 Technical Program Expanded Abstracts, 5p. [Link]

Phillips, J.D., 2006, The role of negative structural indices in magnetic interpretation - lessons from the Bishop model: Society of Exploration Geophysicists, 2006 Workshop W-5 The Bishop Model: Investigations into the Use and Abuse of Test Models [Link]

Phillips, J.D., 2002, Two-step processing for 3D magnetic source locations and structural indices using extended Euler or analytic signal methods: Society of Exploration Geophysicists, 2002 Technical Program Expanded Abstracts, 4p. [Link]

Phillips, J.D., 2001, Tools and techniques for the application of high-resolution aeromagnetic data to engineering problems: Proceedings, SAGEEP 2001, CD-ROM, 22p. [Link]

Phillips, J.D., 2001, Designing matched bandpass and azimuthal filters for the separation of potential-field anomalies by source region and source type: Australian Society of Exploration Geophysicists, 15th Geophysical Conference and Exhibition, Expanded Abstracts CD-ROM, 4p. [Link]

Phillips, J.D., and Grauch, V.J.S., 2001, Some current research on the processing and interpretation of potential-field data at the U.S. Geological Survey: Proceedings of the workshop on future directions in the analysis of potential-field data, August 18, 2001, Perth, Australia. 4p. [Link]

Phillips, J.D., 2000, Locating magnetic contacts: a comparison of the horizontal gradient, analytic signal, and local wavenumber methods: Society of Exploration Geophysicists, Expanded Abstracts with Biographies, 2000 Technical Program, v.1, p.402-405. [Link]

Phillips, J.D., 1996, Potential-field continuation: past practice vs. modern methods: Society of Exploration Geophysicists, Expanded Abstracts with Bibliographies, 1996 Technical Program, v.2, p.1411-1414.[Link]

Phillips, J.D., and Fitterman, D.V., 1995, Environmental geophysics: Reviews of Geophysics, Supplement, U.S. National Report to International Union of Geodesy and Geophysics 1991-1994, July 1995, p.185-193. [Link]