Eugene D. Humphreys

Department of Geological Sciences
University of Oregon
Eugene, OR 97403


Ph.D. in Geophysics, California institute of Technology, Pasadena, June 1985, Thesis: Studies of the Crust-Mantle System beneath Southern California

M.S. in Geophysics, University of California, Riverside, June 1978, Thesis: Telluric Sounding and Mapping in the Vicinity of the Salton Sea Geothermal Area, Imperial Valley, California

B.S. in Geophysics, University of California, Riverside, June 1975


Professor, Department of Geological Sciences, University of Oregon, Sept. 1997 - present

Associate Professor, Sept. 1991 - Sept. 1997

Assistant Professr, Sept. 1985 - Sept. 1991

Teacher, Riverside City College, Riverside, California, 1979 - 1980


The Milton and Francis Clauser Doctoral Prize (for the outstanding Caltech Ph.D. thesis of 1985)

Editor's Citation for excellence in refereeing (JGR Red)

Fellow, Geological Society of America

Crosby Professor, MIT (10/99 - 3/00)

Fellow, American Geophysical Union

Jackson Distinguished Professor, U Texas (2/05 - 3/05)


Canadian Earth science program review (7/03)

Steering Committees: USArray and Plate Boundary Observatory (initiation to termination in 2003)

IRIS Executive committee (1/97 - 7/00)

GSA Bulletin Associate Editor (11/96 - 1/00)

GSA Geophysics Division Head (11/97 - 11/98)

NSF review panels: Seismology/Geophysics (3/92 - 9/94), Active Tectonics (4/96, 4/97, 3/98)

Earthscope (10/03)

USGS review panel

Planning committees: Active Tectonics (1995), ILIAD (1994), IRIS Workshops (1996, 1999)

Earthscope Seismic Imaging (2003), Pacific Northwest Earthscope Workshop (2003)

PASSCAL standing committee (6/92 - 6/95)

Some Invited Talks (* indicates multiple visits)

AGU*, Arizona State*, Brigham Young, Caltech*, Carnegie Inst., Columbia*, Colorado School of Mines, GSA*, Harvard, Humbolt, IRIS*, Lithoprobe, MIT*, Pacific Geoscience Centre, Purdue, Rice*, SUNY Stony Brook, Univ Arizona*, UCLA*, UC Riverside*, UC Berkeley*, Univ British Columbia*, UC Davis, UC Santa Cruz, UC Santa Barbara, Univ Colorado, Univ Nevada Las Vegas, Univ Nevada Reno*, Univ New Mexico*, USC, UTAusten, UT El Paso, Univ Utah*, Univ Wisconson, USGS Menlo Park*
Local: Boise State, Central Washington, Humbolt State, Idaho State, Oregon State*, Southern Oregon, Univ Idaho, Univ Washington*, Washington State, Western Washington, Whitman

Supervised Students

Student Degree Year Shared Location
John Rasmussen MS 1989 shared National Park Service, Crater Lake, Oregon
Alberto Patino-Douce PhD 1990 shared Professor (U Georgia)
Peter Puster MS 1990 PhD MIT, Finance, Chicago, Illinois
Francois Saucier PhD 1991 Oceanography Research Director (Mont-Joli, Canada)
Glenn Biasi PhD 1994 shared Research Associate (U Nevada, Reno)
Kenneth Dueker PhD 1994 Professor (U Wyoming)
Xiaohua Peng PhD 1996 Programmer, Portland, Oregon
Erin Hessler MS 1997 Water Analyst, Illinois Water District
Randy Palmer PhD 1997 Back Country Outfitter, Colorado
Rebecca Saltzer MS 1997 PhD, MIT, Seismologist (Arco Petroleum)
Elizabeth Hearn PhD 1998 Professor (U British Columbia)
Mark Hemphill-Haley PhD 1999 shared Professor (Humbolt State, California)
William Hammond PhD 2000 shared Research Scientist, U Nevada, Reno
Derek Schutt PhD 2000 Post Doc, Carnagie Inst., D.C.
Jason Crosswhite MS 2001
PhD in progress
David Adams PhD in progress
Noah Fay PhD in progress shared

External PhD Committee Member

Jonathan Lees, U. Washington, 1994, currently professor (Yale and Duke)

Stephan Rondenay, UBC, 2002, currently professor (MIT)


A "*" indicates a student under my supervision.

In Progress

Adams*, D., and E. D. Humphreys, Mantle attenuation estimates for the Yellowstone swell: Methods and results.


Fay*, N., and Humphreys, E.D., Dynamics of the Salton block: Absolute fault strength and crust-mantle coupling, Geology, Submitted, July 2005.

Hales*, T.C., Abt*, D., Humphreys, E.D., and Roering, J., Columbia River basalt eruptions and uplift of the Wallowa Mountains, Nature, Submitted July, 2005.

Coblentz, D., and Humphreys, E.D., North American dynamics and western U.S. tectonics, J. Geophys. Res., Submitted July, 2005.

In Press

Fay*, N., and Humphreys, E.D., Fault slip rates, effects of sediments and the strength of the lower crust in the Salton Trough region, southern California, J. Geophys. Res., in press, Feb. 2005.

Karlstrom, K. and Humphreys, E., Tectonic history of the Southern Rocky Mountain region: An overview, in Lithospheric structure and evolution of the Rocky mountain region, edited by K.E. Karlstrom and G.R. Keller, Americal Geophysical Union Monograph Series, Americal Geophysical Union, Washington, D.C., 2003.


Schutt*, D.L., and Humphreys, E.D., P and S wave velocity and Vp/Vs in the wake of the Yellowstone hotspot, J. Geophys. Res., doi:10.129/2003JB002442, 2004.

Humphreys, E., E. Hessler*, K. Dueker, E. Erslev, G.L. Farmer, and T. Atwater, How Laramide-age hydration of North America by the Farallon slab controlled subsequent activity in the western U.S., The George A. Thompson volume, International Book Series, 7 (invited), S.L. Klemperer and W.G. Ernst, editors, 524-544, Geol. Soc. Am., Boulder, Colorado, 2003,
and International Geology Review, 45, 575-595, 2003.

Crosswhite*, J.A., and Humphreys, E.D., Imaging the Mountainless Root of the 1.8 Ga Cheyenne Belt Suture and Clues to its Tectonic Stability, Geology, 31, 669-672, 2003.

Karlstrom, K.E., Bowring, S.A., Chamberlain, K.R., and others, Structure and evolution of the lithosphere beneath the Rocky Mountains: initial results from the CD-ROM experiment, GSA Today, 12, 1-5, 2002.

Schutt*, D.L., and Humphreys, E.D., Evidence for a deep asthenosphere beneath North America from western United States SKS splits, Geology, 29, 291-294, 2001.

Humphreys, E.D., D.L. Schutt*, K.G. Dueker and R.B. Smith, Beneath Yellowstone: Evaluating plume and non-plume models using teleseismic data, GSA Today, 10, 2000.

Hammond*, W.C., and E.D. Humphreys, Upper mantle seismic wave velocity: The effect of realistic partial melt geometries, J. Geophys Res., 105, 10,975-10,999, 2000.

Hammond*, W.C., and E.D. Humphreys, Upper mantle seismic wave attenuation: The effect of realistic partial melt distribution, J. Geophys Res., 105, 10,987, 2000.

Levander, A., E.D. Humphreys, G. Ekstrom, A.S. Meltzer, P.M. Shearer, Continental Assembly, Stability, and Instability: USArray: An Earth sciences tool for investigating North America, EOS, 80, 245-251, 1999.

Hearn*, E.H., and E.D. Humphreys, Kinematics of the southern Walker Lane Belt and motion of the Sierra Nevada, J. Geophys. Res., 103, 27,034-27,049, 1998.

Karlstrom, K.E., and E.D. Humphreys, Persistent influence of Proterozoic accretionary boundaries in the tectonic evolution of southwestern North America: Interaction of cratonic grain and mantle modification events, Rocky Mountain Geology, 33, 161-179, 1998.

Lerner-Lam, A., A. Sheehan, S. Grand, E. Humphreys, and others, Deep structure beneath the Southern Rocky Mountains, Rocky Mountain Geology, 33, 199-216, 1998.

Henstock, T., and the Deep Probe Working Group (includes myself), Probing the Archean and Proterozoic Lithosphere of western North America, GSA Today, 8, 1-5, 1998.

Schutt*, D., E. Humphreys, and K. Dueker, Anisotropy of the Yellowstone hot spot wake, eastern Snake River Plain, Idaho, Pure appl. geophys., 151, 443-462, 1998.

Ekstrom, G., E.D. Humphreys, and A. Levander, USArray - a tool for probing the continent, IRIS Newsletter, 1998.

Peng*, X., and E.D. Humphreys, Crustal velocity structure of the eastern Snake River Plain and the Yellowstone swell, J. Geophys. Res., 103, 7171-7186, 1998.

Hearn*, E.H., E.D. Humphreys, Mu Chi, and J.M. Brown, The effect of anisotropy on oceanic upper mantle temperatures, structure, and dynamics, J. Geophys. Res., 102, 11,943-11,956, 1997.

Peng*, X., and E.D. Humphreys, Crustal velocity structure of northwestern Nevada from teleseismic receiver function analysis, Bull. Seis. Soc. Am., 87, 745-754, 1997.

Saltzer*, R.L., and E.D. Humphreys, Upper mantle P-wave structure of the eastern Snake River Plain and its relationship to geodynamic models of the region, J. Geophys. Res., 102, 11,829-11,841, 1997.

Zhao, D., H. Kanamori, and E. Humphreys, Simultaneous inversion of local and teleseismic data for the crust and upper mantle structure of southern California, Physics of the Earth and Planetary Interiors, 93, 191-214, 1996 (my name included without consent).

Humphreys, E.D., Post-Laramide removal of the Farallon slab, western United States, Geology, 23, 987-990, 1995.

Palmer*, R., R.J. Weldon, E. Humphreys, and F. Saucier*, Earthquake recurrence on the southern San Andreas modulated by fault-normal stress, Geophys. Res. Lett., 22, 535-538, 1995.

Humphreys, E.D., and R.J. Weldon, Deformation across the western United States: A local estimate of Pacific-North America transform deformation, J. Geophys. Res., 99, 19,975-20,010, 1994.

Humphreys, E.D. and K.G. Dueker*, Western U.S. upper mantle structure, J. Geophys. Res., 99, 9615-9634, 1994.

Humphreys, E.D. and K.G. Dueker*, Physical state of the western U.S. upper mantle, J. Geophys. Res., 99, 9635-9650, 1994.

Saucier*, F. and E. Humphreys, Horizontal crustal deformation in southern California from joint models of geologic and very long baseline interferometry measurements, Contributions of Space Geodesy to Geodynamics, edited by D. E. Smith and D. L. Turcotte, Am. Geophys. Union Geodynamics Series, v. 23, pp. 139-176, Am. Geophys. Union, Washington, D.C., 1993.

Dueker*, K., E. Humphreys, and G. Biasi*, Teleseismic imaging of the western United States upper mantle structure using the simultaneous iterative reconstruction technique (chapter 11), Iyer, H.M. and K. Hirihara, Eds., Seismic Tomography: Theory and practice, 265-298, Chapman and Hall, London, 1993.

Biasi*, G. P., and E. D. Humphreys, P-wave image of the upper mantle structure of central California and southern Nevada, Geophys. Res. Lett., 11, 1161-1164, 1992.

Saucier*, F., E.D. Humphreys and R.J. Weldon, Stress near geometrically complex strike-slip faults: application to the San Andreas fault at Cajon Pass, southern California, J. Geophys. Res., 97, 5081-5094, 1992.

Humphreys, E.D. and R.J, Weldon, Kinematic constraints on the rifting of Baja California, in, American Association of Petroleum Geologists Memoir 47: The Gulf and Peninsular Province of the Californias, Chapter 12, J.P. Dauphin B.R.T. Simoneit, eds., pp. 217-229, 1991.

Humphreys, E.D., and B.H. Hager, A kinematic model for the late Cenozoic development of southern California crust and upper mantle, J. Geophys. Res., 95, 19,747-19,762, 1990.

Humphreys, E.D., and R.W. Clayton, Tomographic image of the southern California mantle, J. Geophys. Res., 95, 19,725-19,746, 1990.

Dueker*, K., and Humphreys, E., Upper-mantle velocity structure of the Great Basin, Geophys. Res. Lett., 17, 1327-1330, 1990.

Patino-Douce*, A.E., E.D. Humphreys, and A.D. Johnston, Anatexis and metamorphism in tectonically thickened continental crust exemplified by the Sevier Hinterland, western North America, Earth and Planetary Science Letters, 97, 290-315, 1990.

Patino-Douce*, A.E., A.D. Johnston, and E.D. Humphreys, Closed-system anatexis in the Cordilleran interior: the importance of initial structure, EOS "Frogs" article, 1990.

Thompson, R.N. P.T. Leat, and E. Humphreys, What is the influence of the Yellowstone plume on Pliocene-Recent western USA magmatism?, New Mexico Bureau of Mines and Mineral Resources Bulletin, 131, 268, 1989.

Weldon, R.J., and E.D. Humphreys, Comment on "Structural transect of the western Transverse Ranges" by J. Namsen and T. Davis, Geology, Aug., 769-770 1989.

Rasmussen*, J.R., and E.D. Humphreys, A tomographic image of the mantle beneath Washington, Geophys. Res. Lett., 15, 1417-1420, 1988.

Humphreys, E.D. and R.W. Clayton, Adaptation of tomographic reconstruction to seismic travel-time problems, J. Geophys. Res., 93, 1073-1085, 1988.

Weldon, R.J, and E.D. Humphreys, A kinematic model of southern California, Tectonics, 5, 33-48, 1986.

Humphreys, E.D., R.W. Clayton and B.H. Hager, A tomographic image of mantle structure beneath southern California, Geophys. Res. Lett., 11, 625-627, 1984.

Maas, J.P., and E.D. Humphreys, Correspondence between heat flow and electric field anomalies in the Imperial Valley, California, in Proceedings of the American Nuclear Society topical meeting on Energy and Mineral Resource Recovery Research, Colorado School of Mines, Golden, Colorado, April, 1977.

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