Doug Toomey Professor of Geophysics

Research Projects:

Cascadia Initiative Expedition Team (CIET)

CIETToomey, D.R., R.M. Allen, A.H. Barclay, S.W. Bell, P.D. Bromirski, R.L. Carlson, X. Chen, J.A. Collins, R.P. Dziak, B. Evers, D.W. Forsyth, P. Gerstoft, E.E.E. Hooft, D. Livelybrooks, J.A. Lodewyk, D.S. Luther, J.J. McGuire, S.Y. Schwartz, M. Tolstoy, A.M. Tréhu, M. Weirathmueller, and W.S.D. Wilcock. 2014. The Cascadia Initiative: A sea change in seismological studies of subduction zones. Oceanography 27(2):138–150


go to the Galapagos Page

Byrnes, J., E. E. E. Hooft, D. R. Toomey, D. R. Villagómez, D. J. Geist, and S. C. Solomon, An upper-mantle seismic discontinuity beneath the Galápagos Archipelago and its implications for studies of the lithosphere-asthenosphere boundary, Geochem. Geophys. Geosyst., in press.

Galapagos Cover

Villagomez, D. R., D. R. Toomey, D. J. Geist, E. E. E. Hooft and S. C. Solomon, Mantle flow and multistage melting beneath the GalApagos hotspot revealed by seismic imaging, Nature Geoscience, doi:10.1038/NGEO2062, 2014.


Villagomez, D. R., D. R. Toomey, E. E. E. Hooft and S. C. Solomon, Crustal structure beneath the Galápagos Archipelago from ambient noise tomography and its implications for plume-lithosphere interactions, J. Geophys. Res., 116, B04310, doi:10.1029/2010JB007764, 2011.

Endeavour/Juan de Fuca

The Role of magma injection in Localizing Black Smoker ACtivity, Nature Geoscience, 2009

Hooft, E. E. E., H. Patel, W. Wilcock, K. Becker, D. Butterfield, E. Davis, R. Dziak, K. Inderbitzen, M. Lilley, P. McGill, D. Toomey and D. Stakes, A seismic swarm and regional hydrothermal and hydrologic perturbations: The northern Endeavour segment, February 2005, Geochem. Geophys. Geosyst. , 11 , Q12015, doi:10.1029/2010GC003264, 2010.

East Pacific Rise:

Go to the Undershoot page

Nature News and Views

Toomey, D. R. PLATE TECTONICS: Piecing together rifts. Nature Publishing Group 5, 235–236 (2012).

Durant, D. T. and D. R. Toomey, Evidence and implications of a crustal magmatism on the flanks of the East Pacific Rise, Earth and Planet. Sci. Lett., 287, 130-136, 2009

Toomey, D.R. and E. E. E. Hooft, Mantle upwelling, magmatic differentiation, and the meaning of axial depth at fast-spreading ridges, Geology, 36, doi:10.1130/G24834A.1, 679-682, 2008.

Skewed Up

Toomey, D. R., D. Jousselin, R. A. Dunn, W. S. D. Wilcock and R. S. Detrick, Skew of mantle upwelling beneath the East Pacific Rise Governs Segmentation, Nature, 444, doi:10.1038/nature05679, 409-414, 2007.

Under the Volcano

Somewhere on Earth, beneath its ocean, a volcano is erupting. As you read this, there are probably several submarine volcanoes spewing forth lava, creating new seafloor and renewing deep-sea hydrothermal vent fields that support unique animal communities.  These erupting volcanoes lie along the globe-encircling mid-ocean ridge system, the largest continuous structural feature of our planet.  This volcanic activity is not cataclysmic, but is the signature of a living planet, one that is evolving and one that is capable of hosting life.

Toomey's Site

DEPARTMENT OF Geological Sciences, University of Oregon

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