Professor Emeritus

Office: 541-737-4140

Burt Hall

Burt Hall 255

2651 SW Orchard Avenue

2651 SW Orchard Avenue
Corvallis, OR 97331

Profile Field Tabs

Brief Research Interests: 

Helium isotope and rare gas geochemistry, trace element chemistry of volcanic rocks from mid-ocean ridges


Research Interests

Helium isotope and rare gas geochemistry; isotope and trace element chemistry of volcanic rocks from mid-ocean ridges, islands, and continental rifts, with applications to the dynamics of the Earth's upper mantle; the role of volatiles in petrogenesis.

Current Research

Spatial variations in helium isotopes along mid-ocean ridges: carbon and helium isotope variations at Loihi Seamount: generation of volatile-undersaturated mid-ocean ridge basalts


BS, Florida Institute of Technology (Oceanography) 1975
MS, University of Rhode Island (Oceanography) 1980
PhD, MIT-Woods Hole Oceanographic Institution (Oceanography) 1987

Graduate Students

Attilio Giacobbe            M.S.    UCSB, 1993

Louise Douglas             M.S.    Marine Geology & Geophysics, 1998

Brennan Jordan            Ph.D.   Geosciences, 2001

Chris Russo                    M.S.    Geosciences, 2001

                                         Ph.D.   MG&G, 2007

Charlotte Goddard       Ph.D.   MG&G, 2008

Kevin Konrad                 M.S.    Geology, 2012

                                         Ph.D.   Geology, 2017

Thi Truong                      Ph.D.   Geology (current)


Bender, M. L. and D. W. Graham (1978) Long term constraints on the global marine carbonate system. J. Mar. Res. 36, 551-567.

Bender, M. L. and D. W. Graham (1981) On Late Miocene abyssal hydrography. Mar. Micropaleo. 6, 451-464.

Graham, D. W., B. H. Corliss, M. L. Bender and L. D. Keigwin, Jr. (1981) Carbon and oxygen isotopic disequilibria of Recent deep-sea benthic foraminifera. Mar. Micropaleo. 6, 483-497.

Graham, D. W., M. L. Bender, D. F. Williams and L. D. Keigwin, Jr. (1982) Strontium-calcium ratios in Cenozoic planktonic foraminifera. Geochim. Cosmochim. Acta 46, 1282-1292.

Klinkhammer, G., D. T. Heggie and D. W. Graham (1982) Metal diagenesis in oxic marine sediments. Earth Planet. Sci. Lett. 61, 211-219.

Emerson, S., V. Grundmanis and D. W. Graham (1982) Carbonate chemistry in marine pore waters: MANOP sites C and S. Earth Planet. Sci. Lett. 61, 220-232.

Rona, P. A., G. Thompson, M. J. Mottl, J. A. Karson, W. J. Jenkins, D. Graham, M. Mallette, K. Von Damm and J. Edmond (1984) Hydrothermal activity at the Trans-Atlantic Geotraverse Hydrothermal Field, Mid-Atlantic Ridge crest at 26°N. J. Geophys. Res. 89, 11365-11377.

Bender, M. L., A. Hudson, D. W. Graham, R. O. Barnes, M. Leinen and D. Kahn (1985) Diagenesis and advection reflected in pore water chemistry on the western  flank of the East Pacific Rise, 20 degrees south. Earth Planet. Sci. Lett. 76, 71-83.

Hudson, A., M. L. Bender and D. W. Graham (1986) Iron enrichments in hydrothermal plumes over the East Pacific Rise. Earth Planet. Sci. Lett. 79, 250-254.

Graham, D. W., W. J. Jenkins, M. D. Kurz and R. Batiza (1987) Helium isotope  disequilibrium and geochronology of glassy submarine basalts. Nature 326, 384-386.

Graham, D. W., A. Zindler, M. D. Kurz, W. J. Jenkins, R. Batiza and H. Staudigel (1988) He, Pb, Sr and Nd isotope constraints on magma genesis and mantle heterogeneity beneath young Pacific seamounts. Contrib. Mineral. Petrol. 99, 446-463.

Sarda, P. and D. Graham (1990) Mid-ocean ridge popping rocks: implications for degassing at  ridge crests. Earth Planet. Sci. Lett. 97, 268-289.

Graham, D., J. Lupton, F. Albarède and M. Condomines (1990) Extreme temporal homogeneity of helium isotopes at Piton de la Fournaise, Réunion Island. Nature 347, 545-548.

Lupton, J. and D. Graham (1991) Comment on "A ten-year decrease in the atmospheric helium isotope ratio possibly caused by human activity" by Y. Sano et al.. Geophys. Res. Lett. 18, 482-485.

Graham, D. and P. Sarda (1991) Reply to comment by T. M. Gerlach on "Mid-ocean ridge popping rocks: implications for degassing at ridge crests". Earth Planet. Sci. Lett. 105, 568-573.

Graham, D. W., S. E. Humphris, W. J. Jenkins and M. D. Kurz (1992) Helium isotope geochemistry of some volcanic rocks from St. Helena. Earth Planet. Sci. Lett. 110, 121-131.

Graham, D. W., W. J. Jenkins, J.-G. Schilling, G. Thompson, M. D. Kurz and S. E. Humphris (1992) Helium isotope geochemistry of mid-ocean ridge basalts from the South Atlantic. Earth Planet. Sci. Lett. 110, 133-147.

Lupton, J. E., D. W. Graham, J. R. Delaney and H. P. Johnson (1993) Helium isotope variations in Juan de Fuca Ridge basalts. Geophys. Res. Lett. 20, 1851-1854.

Graham, D. W., D. M. Christie, K. S. Harpp and J. E. Lupton (1993) Mantle plume helium in submarine basalts from the Galapagos Platform. Science 262, 2023-2026.

Graham, D. W., P. Allard, C. K. Kilburn, F. J. Spera and J. E. Lupton (1993) Helium isotopes in some historical lavas from Mount Vesuvius. J. Volc. Geotherm. Res. 58, 359-366.

Hoernle, K., Y.-S. Zhang and D. Graham (1995) Seismic and geochemical evidence for large-scale mantle upwelling beneath the eastern Atlantic and western and central Europe.  Nature 374, 34-39.

Hanan, B. B. and D. W. Graham (1996) Lead and helium isotope evidence from oceanic basalts for a common deep source of mantle plumes. Science 272, 991-995.

Reid, M. R. and D. W. Graham (1996) Resolving lithospheric and sub-lithospheric contributions to helium isotope variations in basalts from the southwestern US. Earth Planet. Sci. Lett. 144, 213-222.

Graham, D. W., P. Castillo,  J. E. Lupton  and R. Batiza (1996) Correlated helium and strontium isotope ratios in South Atlantic near-ridge seamounts and implications for mantle dynamics.  Earth Planet. Sci. Lett. 144, 491-504.

Burnard, P., D. Graham and G. Turner (1997) Vesicle-specific noble gas analyses of "popping rock": implications for primordial noble gases in Earth. Science 276, 568-571.

Garcia, M. O., K. H. Rubin, M. D. Norman, J. M. Rhodes, D. W. Graham, D. W. Muenow and K. Spencer  (1998) Petrology and geochronology of basalt breccia from the 1996 earthquake swarm of Loihi Seamount, Hawaii: magmatic history of its 1996 eruption.  Bull. Volcanol. 59, 577-592.

Graham, D. W., L. M. Larsen, B. B. Hanan, M. Storey, A. K. Pedersen and J. E. Lupton (1998) Helium isotope composition of the early Iceland mantle plume inferred from the Tertiary picrites of West Greenland. Earth Planet. Sci. Lett. 160, 241-256.

Graham, D. W. (1999) Helium Isotopes. In: The Encyclopedia of Geochemistry, ed. C. P. Marshall and R. W. Fairbridge, Kluwer Academic Publishers, pp.314-315.

Sturm, M., E. M. Klein, D. W. Graham and J. L. Karsten (1999) Age constraints on crustal recycling to the mantle beneath the southern Chile Ridge: He-Pb-Sr-Nd systematics. J. Geophys. Res., 104, 5097-5114.

Graham, D. W., K. T. M Johnson, L. M. Douglas Priebe and J. E. Lupton (1999) Hotspot-ridge interaction along the Southeast Indian Ridge near Amsterdam and St. Paul islands: helium isotope evidence. Earth Planet. Sci. Lett. 167, 297-310.

Furman, T. H. and D. W. Graham (1999) Erosion of lithospheric mantle beneath the East African Rift System: geochemical evidence from the Kivu volcanic province. Lithos,  48, 237-262.

Graham, D. W. and J. E. Lupton (1999) Helium isotopes in historical lavas from Mount Vesuvius: comment on 'Noble gas isotopic ratios from historical lavas and fumaroles at Mount Vesuvius' by D. Tedesco et al.. Earth Planet. Sci. Lett. 174, 241-244.

Hauff, F., K. Hoernle, G. Tilton, D. W. Graham and A. C. Kerr (2000) Large volume recycling of oceanic lithosphere over short time scales (≤0.5 Ga): geochemical constraints from the Caribbean Large Igneous Province. Earth Planet. Sci. Lett. 174, 247-263.

Scheirer, D. S., D. W. Forsyth, J. A. Conder, M. A. Eberle, S.-H. Hung, K. T. M. Johnson and D. W. Graham (2000) Anomalous seafloor spreading of the Southeast Indian Ridge near the Amsterdam-St. Paul Plateau. J. Geophys. Res. 105, 8243-8262.

Johnson, K. T. M., D. W. Graham, K. H. Rubin, K. Nicolaysen, D. S. Scheirer, D. W. Forsyth, E. T. Baker and L. M. Douglas Priebe (2000) Boomerang Seamount: the active expression of the Amsterdam-St. Paul hotspot, Southeast Indian Ridge.  Earth Planet. Sci. Lett. 183, 245-259.

Graham, D. W., J. E. Lupton, F. J. Spera and D. M. Christie (2001) Upper mantle dynamics revealed by helium isotope variations along the Southeast Indian Ridge.  Nature 409, 701-703.

Graham, D. W. (2002) Noble gas isotope geochemistry of mid-ocean ridge and ocean island basalts; characterization of mantle source reservoirs. In: Noble Gases in Geochemistry and Cosmochemistry, eds. D. Porcelli, R. Wieler and C. Ballentine. Reviews in Mineralogy and Geochemistry, Mineral. Soc. Amer., Washington, D.C., pp. 247-318.

Mahoney, J. J., D. W. Graham, D. M. Christie, K. T. M. Johnson, L. S. Hall and D. L. VonderHaar (2002) Between a hot spot and cold spot: isotopic variation in the Southeast Indian Ridge asthenosphere, 86°-118°E. J. Petrol. 43,  1155-1176.

Burnard, P. G., D. W. Graham and K. A. Farley (2002) Mechanisms of magmatic gas loss along the Southeast Indian Ridge and the Amsterdam-St. Paul Plateau. Earth Planet. Sci. Lett. 203, 131-148.

Detrick, R. S., J. M. Sinton, G. Ito, J. P. Canales, M. Behn, T. Blacic, B. Cushman, J. E. Dixon, D. W. Graham and J. Mahoney (2002) Correlated geophysical, geochemical and volcanological manifestations of plume-ridge interaction along the Galápagos Spreading Center. Geochem. Geophys. Geosys. 3, Paper 2002000350.

Edmonds, H. N., P. J. Michael, E. T. Baker, D. P. Connelly, J. E. Snow, C. H. Langmuir, H. J. B. Dick, R. Mühe, C. R. German and D. W. Graham (2003) Abundant hydrothermal venting on the ultra-slow spreading Gakkel Ridge, Arctic Ocean. Nature, 421, 252-256.

Ito, G., J. Lin and D. Graham (2003) Observational and theoretical studies of the dynamics of mantle plume-mid-ocean ridge interaction. Rev. Geophys. 41, 1017-1041, DOI:   10.1029/2002RG000117.

Michael, P. J., C. H. Langmuir, H. J. B. Dick, J. E. Snow, S. L. Goldstein, D. W. Graham, K. Lehnert, G. Kurras, W. Jokat, R. Mühe, and H. N. Edmonds (2003) Magmatic and amagmatic seafloor generation at the ultraslow-spreading Gakkel ridge, Arctic Ocean. Nature 423, 956-962.

Burnard, P. G., D. W. Graham and K. A. Farley (2004) Fractionation of noble gases (He, Ar) during MORB mantle melting? A case study on the Southeast Indian Ridge. Earth Planet. Sci. Lett.  227, 457-472.

Keller, R. A., D. W. Graham, K. A. Farley, R. A. Duncan, J. E. Lupton (2004) Cretaceous-to-Recent record of elevated 3He/4He along the Hawaiian-Emperor volcanic chain. Geochem. Geophys. Geosys. 5. doi:10.1029/2004GC000739

Agranier, A., J. Blichert-Toft, D. W. Graham, V. Debaille, P. Schiano and F. Albarede (2005) The spectra of isotopic heterogeneities along the Mid-Atlantic Ridge. Earth Planet. Sci. Lett., 238, 96-109.

Graham, D. W., J. Blichert-Toft, C. J. Russo, K. A. Rubin and F. Albarède (2006) Cryptic striations in the upper mantle revealed by hafnium isotopes in Southeast Indian Ridge basalts. Nature, 440, 199-202.

Chen, Y., Y. Zhang, D. Graham, S. Su and J. Deng (2007) Geochemistry of Cenozoic basalts and mantle xenoliths in Northeast China. Lithos, 96, 108-126.

Nicolaysen, K. E., F. A. Frey, J. J. Mahoney, K. T. M. Johnson and D. W. Graham (2007) Influence of the Amsterdam/St. Paul hotspot along the Southeast Indian Ridge between 77° and 88°E: correlations of Sr, Nd, Pb and He isotopic variations with ridge segmentation. Geochem. Geophys. Geosys. 7. doi:10.1029/2006GC001540..

Brandon, A. D., D. W Graham, T. Waight and B. Gautason (2007) 186Os and 187Os enrichments and high-3He/4He sources in the Earth’s mantle: evidence from Icelandic picrites. Geochim. Cosmochim. Acta 71, 4570-4591. doi: 10.1016/j.gca2007.07.015.

VanLaningham, S., R. A. Duncan, N. Pisias and D. W. Graham (2008) Tracking fluvial response to climate change in the Pacific Northwest: a combined provenance approach using Ar and Nd isotopic systems on fine-grained sediments. Quat. Sci. Rev. 27, 497-517.

Goldstein, S. L., G. Soffer,  C. H. Langmuir, K. A. Lehnert, D. W. Graham and P. J. Michael (2008) Origin of a “southern hemisphere” geochemical signature in the Arctic upper mantle. Nature 453, 89-94.

Russo, C. J., K. H. Rubin and D. W. Graham (2009) Mantle melting and magma supply to the Southeast Indian Ridge: the roles of lithology and melting conditions from U-series disequilibria. Earth Planet. Sci. Lett. 278, 55-66.

Graham, D. W., M. R. Reid, B. T. Jordan, A. L. Grunder, W. P. Leeman, J. E. Lupton (2009) Mantle source provinces beneath the northwestern USA delimited by helium isotopes in young basalts. J. Volc. Geotherm. Res. 188, 128-140. doi:10.1016/ j.volgeores. 2008.12.004.

Debaille, V., R. G. Trønnes, A. D. Brandon, T. E. Waight, D. W. Graham, C.-T. A. Lee (2009) Primitive off-rift basalts from Iceland and Jan Mayen: Os isotopic evidence for a mantle source containing enriched subcontinental lithosphere. Geochim. Cosmochim. Acta 73, 3423-3449.

Colin, A., P. G. Burnard, D. W. Graham, Y. Marocchi (2011) Plume-ridge interaction along the Galapagos Spreading Center: discerning between gas loss and source effects using neon isotopic compositions and 4He-40Ar*-CO2 relative abundances. Geochim. Cosmochim. Acta 75, 1145-1160. doi:10.1016/j.gca.2010.11.018

Rooney, T. O., B. B. Hanan, D. W. Graham, T. H. Furman, J. Blichert-Toft and J. G. Schilling (2012) Upper mantle pollution during Afar plume-continental rift interaction. J. Petrol,. 53, 365-389. doi: 10.1093/petrology/egr065.

Lupton, J. E., R. J. Arculus, L. J. Evans and D. W. Graham (2012) Mantle hotspot neon in basalts from the Northwest Lau Back-arc Basin. Geophys. Res. Lett. 39, L08308, doi:10.1029/2012GL051201.

Hanan, B. B., J. Blichert-Toft, C. Hemond,  K. Sayit, A. Agranier,  D. W. Graham and F. Albarède (2013) Pb and Hf Isotope Variations along the Southeast Indian Ridge and the Dynamic Distribution of MORB Source Domains in the  Upper Mantle. Earth Planet. Sci. Lett. 375, 196-208.

Graham, D. W., B. B. Hanan, J. E. Lupton, K. Hoernle, R. Werner, D. M. Christie and J. M. Sinton  (2014) Helium isotope variations and mantle plume – spreading ridge interactions along the Galápagos Spreading Center. Geophysical Monograph 204. The Galápagos: A Natural Laboratory for the Earth Sciences. Eds. K. S. Harpp, E. Mittelstaedt, N. d’Ozouville and D. W. Graham, pp. 393-414.

Graham, D. W., B. B. Hanan, C. Hémond, J. Blichert-Toft and F. Albarède (2014) Helium isotopic textures in Earth’s upper mantle. Geochem., Geophys., Geosyst. 15, 2048-2074. doi: 10.1002/2014GC005264

Sgualdo, P., K. Aviado, L. Beccaluva, G. Bianchini, J. Blichert-Toft, J. G. Bryce, D. W. Graham, C. Natali, F. Siena (2015) Lithospheric mantle evolution in the Afro-Arabian domain: insights from Bir Ali mantle xenoliths (Yemen). Tectonophysics, doi: 10.1016/j.tecto.2014.11.025.

Michael, P. J. and D. W. Graham (2015) The behavior and concentration of CO2 in the suboceanic mantle: inferences from undegassed ocean ridge and ocean island basalts. Lithos 236-237, 338-351. doi: 10.1016/j.lithos.2015.08.020.

Konrad, K., D. W. Graham, C. R. Thornber, R. A. Duncan, A. J. R. Kent and A. Al-Amri (2016) Interaction of asthenospheric melts and lithospheric mantle beneath western Saudi Arabia: inferences from 3He/4He and CO2 in xenoliths and lavas from Harrat Hutaymah. Lithos 248-251, 339-352. doi:10.1016/j.lithos.2016.01.031.

Graham, D. W., P. J. Michael and T. Shea (2016) Extreme incompatibility of helium during mantle melting: evidence from undegassed mid-ocean ridge basalts. Earth Planet. Sci. Lett. 454, 192-202. doi: 10.1016/j.epsl.2016.09.016.

Konrad, K., D. W. Graham, A. J. R. Kent  and A. Koppers (2018) Spatial and temporal variability in Marquesas Islands volcanism revealed by 3He/4He and the composition of olivine-hosted melt inclusions. Chem. Geol. 477, 161-176. doi:10.1016/j.chemgeo.2017.12.025.

Graham, D. W., P. J. Michael and K. H. Rubin (2018) Variations in magmatic He, CO2 and δ13C during a mid-ocean ridge eruption at 9°50'N on the East Pacific Rise. Earth Planet. Sci. Lett. 504. 84-93.

Loewen, M. W., D. W. Graham, I. N. Bindeman,  J. E. Lupton and  M. O Garcia (2019) Hydrogen isotopes in high 3He/4He submarine basalts: Primordial vs. recycled water and the veil of mantle enrichment. Earth Planet. Sci. Lett. 508, 62-73.

Broadley, M. W., H. Sumino, D. W. Graham, R. Burgess and C. J. Ballentine (2019) Recycled components in mantle plumes deduced from variations in halogens (Cl, Br, I), trace elements and 3He/4He along the Hawaiian-Emperor Seamount chain. Geochem., Geophys., Geosyst.

Nelson, W. R., B. B. Hanan, D. W. Graham, S. B. Shirey, G. Yirgu, D. Ayalew and T. Furman (2019) Distinguishing plume and metasomatized lithospheric mantle contributions to post-flood basalt volcanism on the southeastern Ethiopian Plateau. J. Petrol.

Sibrant, A. L. R., M. Maia, E. Mittelstaedt and D. W. Graham (2019) Variable crustal production originating from mantle source heterogeneity beneath the South East Indian Ridge and Amsterdam-St. Paul Plateau. Geochem., Geophys., Geosyst. 10.1029/2019GC008419.

Books Edited

Harpp, K. S., E. Mittelstaedt, N. d’Ozouville and D. W. Graham (2014) The Galápagos: A Natural Laboratory for the Earth Sciences. Geophysical Monograph 204, AGU/Wiley.

News & Views

Graham, D. W. (2005) Geochemistry: Neon illuminates the mantle. Nature (News & Views) 433, 25-26.

Graham, D. W. (2010) Geochemistry: Relict mantle from Earth’s birth. Nature (News & Views) 466, 822-823.

Graham, D. W. (2014) Mantle geochemistry: Small-scale stirrings. Nature Geosci. (News & Views) 7, 556-557. doi:10.1038/ngeo2216.