Publications (with some links to pdfs)

Weekly, R. T., W. S. D. Wilcock, D. R. Toomey, E. E. E. Hooft and E. Kim, Upper crustal seismic structure of the Endeavour Segment, Juan de Fuca Ridge from travel time tomography:  Implications for oceanic crustal accretion, Geochem. Geophys. Geosys., 15, doi:10.1002/2013GC005159, 2014.

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

Bezada, M. J., Humphreys, E. D., Toomey, D. R., Harnafi, M., Dávila, J. M., Evidence of slab rollback in the westernmost Mediterranean from improved upper mantle imageing, Earth Planet. Sci. Lett., 368, 51-60, 2013.

Weekly, R. T., W. S. D. Wilcock, E. E. E. Hooft, D. R. Toomey and P. R. McGill, Termination of a 6 year ridge-spreading event observed using a seafloor seismic network on the Endeavour segment, Juan de Fuca Ridge, Geochem. Geophys. Geosys., 14, 1375-1398, doi:10.1002/ggge.20105, 2013.

Beachly, M. W., Hooft, E. E. E., Toomey, D. R. & Waite, G. P. Upper crustal structure of Newberry Volcano from P-wave tomography and finite difference waveform modeling. J. Geophys. Res. 117, B10311 (2012).

Kelley, D.S., S.M. Carbotte, D.W. Caress, D.A. Clague, J.R. Delaney, J.B. Gill, H. Hadaway, J.F. Holden, E.E.E. Hooft, J.P. Kellogg, M.D. Lilley, M. Stoermer, D. Toomey, R. Weekly, and W.S.D. Wilcock. Endeavour Segment of the Juan de Fuca Ridge: One of the most remarkable places on Earth. Oceanography 25(1):44–61, http://dx.doi.org/10.5670/oceanog.2012.03, 2012.

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

Durant, D. T. , D. R. Toomey and P. J. Wallace ,Effects of systematic variations in magma crystallization on crustal density and axial depth at fast-spreading ridges, (in review)

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

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.

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

Wilcock, W. S. D., E. E. E. Hooft, D. R. Toomey, P. R. McGill, A. H. Barclay, D. S. Stakes, T. M. Ramirez, The role of magma injection in localizing black smoker activity, Nature Geoscience, doi:10.1038/NGEO550, 2009.

Toomey, D. R., D. Jousselin, R. A. Dunn, W. S. D. Wilcock and R. S. Detrick, Mantle skewness and ridge segmentation Toomey et al. reply , Nature, 458, E12-E13, 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.

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.

Villagómez, D. R., D. R. Toomey, E. E. E. Hooft, and S. C. Solomon (2007), Upper mantle structure beneath the Galápagos Archipelago from surface wave tomography, J. Geophys. Res., 112, B07303, doi:10.1029/2006JB004672.

Fontaine, F. R., E. E. E. Hooft, P. G. Burkett, D. R. Toomey, S. C. Solomon, P. G. Silver, Shear-wave splitting beneath the Galápagos archipelago, Geophys. Res. Lett., 32, L21308, doi:10.1029/2005GL024014, 2005.

Dunn, R. A., Lekic, V., Detrick, R. and D. R. Toomey, Three-dimensional seismic structure of the Mid-Atlantic Ridge (35˚N): Evidence for focused melt supply and lower-crustal dike injection, J. Geophys. Res., 110, B09101, doi:10.1029/2004JB003473, 2005.

Barclay, A. H. and D. R. Toomey, Shear wave splitting and crustal anisotropy at the Mid-Atlantic Ridge, 35ºN, J. Geophys. Res., 108(B8), 2378, doi:10.1029/2001JB000918, 2003.

Jousselin, D., R. A. Dunn and D. R. Toomey, Modeling the seismic signature of structural data from the Oman Ophiolite: Can a mantle diapir be detected beneath the East Pacific Rise?, Geochem. Geophys. Geosyst., 4(7), 8610, doi:10.1029/2002GC000418, 2003.

Hooft, E. E. E., D. R. Toomey and S. C. Solomon, Anomalously Thin Transition Zone Beneath the Galápagos Hotspot, Earth and Planet. Sci. Lett., 216, 55-64, 2003.

Wright, D.J., O'Dea, E., Cushing, J.B., Cuny, J.E., and Toomey, D.R.,  Why Web GIS May Not Be Enough: A Case Study with the Virtual Research Vessel, Marine Geodesy, 26(1-2): 73-86, 2003.

Cherkaoui, A. S. M., W. S. D. Wilcock, R. A. Dunn, and D. R. Toomey, A numerical model of hydrothermal cooling and crustal accretion at a fast spreading mid-ocean ridge, Geochem. Geophys. Geosyst., 4(9), 8616, doi:10.1029/2001GC000215, 2003.

Canales, J. P., R. S. Detrick, D. R. Toomey and W. S. D. Wilcock, Segment-scale variations in crustal structure of 150- to 300-k.y.-old fast spreading oceanic crust (East Pacific, 8°15'N-10°15°N) from wide-angle seismic refraction profiles, Geophys. J. Int., 152, 766–794, 2003.

Hammond, W. C. and D. R. Toomey, Seismic velocity anisotropy and heterogeneity beneath the Mantle Electromagnetic band Tomography Experiment (MELT) region of the East Pacific Rise from analysis of P and S body waves, J. Geophys. Res., 108(B4), 2176, doi:10.1029/2002JB001789, 2003.

Toomey, D. R., W. S. D. Wilcock, J. A. Conder, D. W. Forsyth, J. Blundy, E. M. Parmentier, and W. C. Hammond, Asymmetric mantle dynamics in the MELT region of the East Pacific Rise, Earth and Planet. Sci. Lett., 200, 287-295, 2002.

Dunn, R. A. and D. R. Toomey, Crack-induced seismic anisotropy in the oceanic crust across the East Pacific Rise (9°30'N), Earth Planet. Sci. Lett., 189, 9-17, 2001.

Dunn, R. A., D. R. Toomey, R. S. Detrick and W. S. D. Wilcock, Mantle seismic structure beneath the 9°03'N overlapping spreading center on the East Pacific Rise, Science, 291, 1955-1958, 2001.

Barclay, A. H., D. R. Toomey and S. C. Solomon, Microearthquakes and crustal Vp/Vs structure at the Mid-Atlantic Ridge, 35° N, J. Geophys. Res., 106, 2017-2034, 2001.

Tian, T., W. S. D. Wilcock, D. R. Toomey and R. S. Detrick, Seismic heterogeneity in the upper crust near the 1991 eruption site on the East Pacific Rise, 9° 50'N, Geophys. Res. Lett.,27, 2369-2373, 2000.

Dunn, R. A., D. R. Toomey and S. C. Solomon, Seismic structure and physical properties of the crust and shallow mantle beneath the East Pacific Rise, J. Geophys. Res., 105, 23,537-23,556, 2000.

Hung, S-H, D. W. Forsyth and D. R. Toomey, Can a narrow, melt-rich, low-velocity zone of mantle upwelling be hidden beneath the East Pacific Rise? Limits from waveform modeling and the MELT Experiment, J. Geophys. Res., 105, 7945-7960, 2000.

Magde, L. S., A. H. Barclay, D. R. Toomey, R. S. Detrick, and J. A. Collins, Crustal magma plumbing within a segment of the Mid-Atlantic Ridge, 35° N, Earth and Planet. Sci. Lett., 175,55-67, 2000.

Canales, P., R. S. Detrick, J. Lin, J. A. Collins, and D. R. Toomey, Crustal and mantle seismic structure beneath the rift mountains and across a non-transform offset at the Mid-Atlantic Ridge (35° N), J. Geophys. Res., 105, 2699-2719, 2000.

Hooft, E. E. E., R. S. Detrick, D. R. Toomey, J. A. Collins, and J. Lin, Crustal and upper mantle structure along three contrasting spreading segments of the Mid-Atlantic Ridge, 33.5° N-35° N, J. Geophys. Res., 105, 8205-8226, 2000.

MELT Seismic Team, Overview of the seismological component of the MELT Experiment, Science, 280, 1215-1218, 1998.

Toomey, D. R., Wilcock, W. S. D., Solomon, S. C., Hammond, W. C., and J. A. Orcutt, Mantle seismic structure beneath the MELT region of the East Pacific Rise from P and S tomography, Science, 280, 1224-1227, 1998.

Detrick, R. S., D. R. Toomey, and J. A. Collins, Three-dimensional upper crustal heterogeneity and anisotropy around Hole 540B from seismic tomography, J. Geophys. Res, 103, 30,485-30,504, 1998.

Barclay, A. H., D. R. Toomey, G. M. Purdy, and S. C. Solomon, Seismic structure and magmatic accretionary processes at the Mid-Atlantic Ridge, 35° N, J. Geophys. Res, 103, 17,827-17,844, 1998.

Dunn, R. A. and D. R. Toomey, Seismological evidence for three-dimensional melt migration beneath the East Pacific Rise, Nature, 338, 259-262, 1997.

Cuny, J. E., R. Dunn, S. T. Hackstadt, C. Harrop, H. Hersey, A. D. Malony, and D. R. Toomey, Building domain-specific environments for computational science: A case study in seismic tomography, Intl. J. of Supercomputer Applications and High Performance Computing, 11, 179-196, 1997.

Wolfe, C. J., G. M. Purdy, D. R. Toomey and S. C. Solomon, Microearthquake characteristics and crustal velocity structure at 29° N on the Mid-Atlantic ridge: The architecture of a slow-spreading segment, J. Geophys. Res., 100, 24,449-24,472, 1995.

Wilcock, W. S. D., G. M. Purdy, S. C. Solomon, and D. R. Toomey, Seismic attenuation structure of the East Pacific Rise near 9° 30'N, J. Geophys. Res., 100, 24,147-24,165, 1995.

Toomey, D. R., S. C. Solomon and G. M. Purdy, Tomographic imaging of the shallow crustal structure of the East Pacific Rise at 9° 30'N, J. Geophys. Res., 99, 24,135-24,157, 1994.

Faul, U., D. R. Toomey, H. Waff, Intragranular basaltic melt is distributed in thin elongate inclusions, Geophys. Res. Lett., 21, 29-32, 1994.

Wilcock, W. S. D., M. E. Dougherty, S. C. Solomon, G. M. Purdy, and D. R. Toomey, Seismic propagation across the East Pacific Rise: Finite-difference experiments and implications for seismic tomography, J. Geophys. Res., 15, 19,913-19,932, 1993.

Wilcock, W. S. D., D. R. Toomey, S. C. Solomon, and G. M. Purdy, The renavigation of Sea Beam bathymetric data between 9° and 10° N on the East Pacific Rise, Mar. Geophys. Res., 15, 1-12, 1993.

Wilcock, W. S. D., G. M. Purdy, S. C. Solomon, D. L. Dubois, and D. R. Toomey, Microearthquakes on and near the East Pacific Rise, 9° -10° N, Geophys. Res. Lett., 19, 2131-2134, 1992.

Wilcock, W. S. D., S. C. Solomon, G. M. Purdy, and D. R. Toomey, The seismic attenuation structure of a fast-spreading mid-ocean ridge, Science, 258, 1470-1473, 1992.

Toomey, D. R., Tomographic Imaging of Spreading Centers, Oceanus, 34, 92-99, 1992.

Solomon, S. C., and D. R. Toomey, The Structure of Mid-Ocean Ridges, Ann. Rev. Earth and Planet. Sci., 20, 329-364, 1992.

Wilcock, W. S. D., and D. R. Toomey, Estimating hypocentral uncertainties for marine microearthquake surveys: A comparison of generalized inverse and grid search methods, Mar. Geophys. Res., 13, 161-171, 1991.

Toomey, D. R., G. M. Purdy, S. C. Solomon and W. S. D. Wilcock, The three-dimensional seismic velocity structure of the East Pacific Rise near latitude 9° 30'N, Nature, 347, 639-645, 1990.

Toomey, D. R., and G. R. Foulger, Application of tomographic inversion to local earthquake data from the Hengill-Grensdalur central volcano complex, Iceland, J. Geophys. Res., 94, 17,497-17,510, 1989.

Foulger, G. R., and D. R. Toomey, Structure and evolution of the Hengill-Grensdalur volcanic complex, Iceland: Geology, geophysics and seismic tomography, J. Geophys. Res., 94, 17,511-17,522, 1989.

Toomey, D. R., S. C. Solomon, and G. M. Purdy, Microearthquakes beneath the median valley of the Mid-Atlantic Ridge near 23°N: Tomography and tectonics, J. Geophys. Res., 93, 9093-9112, 1988.

Toomey, D. R., S. C. Solomon, G. M. Purdy, and M. H. Murray, Microearthquakes beneath the median valley of the Mid-Atlantic Ridge near 23° N: Hypocenters and focal mechanisms, J. Geophys. Res., 90, 5443-5458, 1985.

* Underline indicates first-author is a graduate student or post-doctoral collaborator

Manuscripts in Preparation:

Hooft, E. E. E. and D. R. Toomey, How to change diapers on twins while performing circus acts for a two year old.

Toomey's Site

DEPARTMENT OF Geological Sciences, University of Oregon

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