The Plasma Mass Spectrometry Laboratory


Plasma Lab Publications (2002 – 2009)


Day, J.M.D., Qiu*, L., Ash, R.D., McDonough, W.F., Teng, F-Z., Rudnick, R.L. and Taylor, L.A. (2016) High-temperature fractionation of lithium isotopes in the Moon, Meteoritics and Planetary Science, 51: 1-17, doi: 10.1111/maps.12643

Gaschnig**, R.M., Rudnick, R.L., McDonough, W.F., Kaufman, A.J., Valley, J., Hu, Z., Gao, S., and Beck, M. (2016) Compositional evolution of the upper continental crust through time, as constrained by ancient glacial diamictites, submitted to Geochimica et Cosmochimica Acta, 186: 316-343. doi:10.1016/j.gca.2016.03.020

Chen*, K. Walker, R. J., Rudnick, R. L., Gao, S., Gaschnig**, R. M., Puchtel, I.S., Tang*, M. and Hu, Z.-C. (2016) Platinum-group element abundances and Re–Os isotopic systematics of the upper continental crust through time: Evidence from glacial diamictites, Geohimica et Cosmochimica Acta. 191: 1-16.

Li*, S., Gaschnig**, R. M., and Rudnick, R. L. (2016) Insights into chemical weathering of the upper continental crust from the geochemistry of ancient glacial diamictites, Geohimica et Cosmochimica Acta. 176, 96-117.

in press

Iñañez, J., Bellucci*, J., Martín, J. G., Ash, R., McDonough, W.F. and Speakman, R. J. (2016) Pb isotopic composition of Panamanian Colonial Majolica by LA-ICP-MS. In Recent Advances in Laser Ablation ICP-MS for Archaeology (Editors L. Dussubieux, B. Gratuze and M. Golitko). Springer-Verlag. ( in press )


Day, JMD, Walker RJ. 2015. Highly siderophile element depletion in the Moon. Earth and Planetary Science Letters. 423:114-124.

Gaschnig**, R.M., Rudnick, R.L., and McDonough, W.F. (2015) Standard addition ICP-MS characterization of selected chalcophile and siderophile elements (Ga, Ge, Mo, Ag, Cd, In, Sn, Sb, W, Tl, and Bi) in USGS whole-rock standard reference materials, Geostandards and Geoanalytical Research, 39: 371-379, doi: 10.1111/j.1751-908X.2014.00330.x

González-Jiménez J.M., Barra F., Walker R.J., Reich M. and Gervilla F. Geodynamic implications of ophiolitic chromitites in the La Cabaña ultramafic bodies, Central Chile . Internat. Geology Rev. 56, 1466-1483, DOI:10.1080/00206814.2014.947334.

Liu* J., Rudnick R.L., Walker R.J., Xu W-l, Gao S. and Wu Y-y. Big insights from tiny peridotites: evidence for persistence of Precambrian lithosphere beneath the eastern North China Craton. Tectonophysics, 650: 104-112,

Liu** J., Sharp* M., Ash R.D., Kring D.A. and Walker R.J. Diverse impactors in Apollo 15 and 16 impact melt rocks: evidence from osmium isotopes and highly siderophile elements. Geochim. Cosmochim. Acta, 155: 122-153,

Liu*, X-M., Wanner, C., Rudnick, R.L., and McDonough, W.F. (2015) Processes controlling d7Li in rivers illuminated by study of streams and ground waters draining basalts, Earth and Planetary Science Letters, 409: 212-224.

McCoy-West, A.J., Bennett, V.C., O'Neill, H.St.C., Hermann, J., and Puchtel, I.S. (2015) The Interplay between Melting, Refertilization and Carbonatite Metasomatism in Off-Cratonic Lithospheric Mantle under Zealandia: an Integrated Major, Trace and Platinum Group Element Study, Journal of Petrology, 56: 563-604, doi: 10.1093/petrology/egv011

Sharp*, M., Righter, K., and Walker, R. J. (2015) Estimation of trace element concentrations in the lunar magma ocean using mineral- and metal-silicate melt partition coefficients. Meteoritics & Planetary Science. 50: 733-758.

Touboul**, M., Puchtel, I.S., and Walker , R.J. (2015) Tungsten Isotopic Evidence for Disproportional Late Accretion to the Earth and Moon. Nature 520: 530-533

Walker , R.J., Bermingham**, K., Liu*, J., Puchtel, I.S., Touboul**, M., and Worsham*, E.A. (2015) In Search of Late-Stage Planetary Building Blocks. Chemical Geology 411: 125-142


Archer* G.J., Bullock E.S., Ash R.D. and Walker R.J. (2014) 187Re-187Os isotopic and highly siderophile element systematics of the Allende meteorite: evidence for primary nebular processes and late-stage alteration. Geochim. Cosmochim. Acta 131, 402-414

Gaschnig**, R.M., Rudnick, R.L., McDonough, W.F. Hu, Z., Gao, S. and Kaufman, A.J. (2014) Onset of oxidative continental weathering recorded by transition metal concentrations in ancient glacial deposits, Earth and Planetary Science Letters, 408, 87-99

Lehner, S.W., McDonough, W.F. and Németh, P. (2014) Trace element signatures of matrix and chondrules in EH3 Sahara 97072, Meteoritics and Planetary Science, 49: 2219–2240

Liu*, X-M., Teng, F.-Z., Rudnick, R.L., McDonough, W.F. and Cummings, M.L. (2014) Massive magnesium depletion and isotope fractionation in weathered basalts. Geochimica et Cosmochimica Acta. 135 336-349.

Mansur*, A.T., Manya, S., Timpa*, S., and Rudnick, R.L. (2014) Granulite-facies Xenoliths in Rift Basalts of Northern Tanzania: Age, Composition and Origin of Archean Lower Crust. Journal of Petrology. 55 1243-1286.

Penniston-Dorland , S.C. , Gorman*, J.K., Bebout, G.E., Piccoli, P.M., and Walker , R.J., 2014, Reaction rind formation in the Catalina Schist: Deciphering a history of mechanical mixing and metasomatic alteration, Chemical Geology. 384, 47-61

Puchtel I.S., Walker R.J., Touboul** M., Nisbet E.G. and Byerly G.R. (2014) Insights into early Earth from the Pt-Re-Os isotope and highly siderophile element abundance systematics of Barberton komatiites. Geochim. Cosmochim. Acta 125, 394-413.

Sharp*, M., Gerasimenko, I., Loudin, L. C., Liu*, J., James, O. B., Puchtel, I. S., Walker, R. J. (2014) Characterization of the dominant impactor signature for Apollo 17 impact melt rocks. Geochimica et Cosmochimica Acta. 131 62-80.

Sharp*, N., McDonough, W.F., Ticknor, B.W., Ash, R.D., Piccoli, P.M. and Borg*, D.T. (2014) Rapid Analysis of Trinitite with Nuclear Forensic Applications for Post-Detonation Material Analyses, Journal of Radioanalytical and Nuclear Chemistry, 302: 57-67, doi:10.1007/s10967-014-3285-9

Tang*, M., and McDonough, W.F. and Arévalo, Jr., R., (2014) High-precision measurement of Eu/Eu* in geological glasses via LA-ICP-MS analysis, Journal of Analytical Atomic Spectrometry, 29: 1835-1843, doi: 10.1039/c4ja00155a

Tang*, Ming, Rudnick, Roberta L., Chaveul, Catherine. (2014) Sedimentary input to the source of Lesser Antilles lavas: A Li perspective. Geochimica et Cosmochimica Acta. 144 43-58.

Touboul**, M., Liu*, J., O'Neil, J., Puchtel, I.S., and Walker, R.J. (2014) New Insights into the Hadean Mantle Revealed by 182W and Highly Siderophile Element Abundances of Supracrustal Rocks from the Nuvvuaguittuq Greenstone Belt, Quebec, Canada. Chemical Geology 383: 63-75


Arévalo*, Jr., R., McDonough, W. F., Stracke, A., Willbold, M., Ireland *, T., R., and Walker, R. J. (2013) Mantle architecture and distribution of radiogenic power. Geochemistry, Geophysics, Geosytems, 14(7): 2265-2285, doi:10.1002/ggge.20152

Ackerman L., Pitcher # L., Strnad L., Puchtel I.S., Jelínek E. and Walker R.J. (2013) Highly siderophile element geochemistry of peridotites and pyroxenites from Horní Bory: implications for HSE behaviour in subduction-related upper mantle. Geochimica et Cosmochimica Acta, 100: 158-175.

Geboy*, N. J., Kaufman, A. J., Walker, R. J., Misi, A., Flavio de Oliviera, T., Miller*, K. E., Azmy, K., Kendall, B., Poulton, S. W. (2013) Re-Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, Brazil. Precambrian Research. 238: 199-213.

Godfrey, L.V., Chan, L.-H., Alonso, R.N., Lowenstein, T.K., McDonough, W.F., Houston, J., Li, J., Bobst, A., and Jordan, T.E. (2013) The role of climate in the accumulation of lithium-rich brine in the Central Andes, Applied Geochemistry, 38: 92–102, 2013,

Goodrich, C.A., Ash, R.D., Van Orman, J.A., Domanik, K and McDonough, W. F. (2013) Metallic phases and siderophile elements in Main Group Ureilites. Geochimica et Cosmochimica Acta, 112: 340–373

Grottoli, A.G., Matthews*, K.A., Palardy, J.E., and McDonough, W.F. (2013) High resolution coral Cd measurements using LA-ICP-MS and ID-ICP-MS: calibration and interpretation, Chemical Geology, 356: 151–159,

Liu*, X., Rudnick, R.L., McDonough, W.F. and Cummings, M.L. (2013) Tracing Chemical Weathering of Basalts Using Lithium Isotopes: A Case Study from the Columbia River Basalts. Geochimica et Cosmochimica Acta, 115, 73–91

McCoy-West A.J., Puchtel I.S., Bennett V.C. and Walker R.J. (2013) Extreme persistence of cratonic lithosphere in the Southwest Pacific: Paleoproterozoic Os isotopic signatures in Zealandian mantle xenoliths. Geology, 41, 231-234.

Puchtel I.S., Blichert-Toft J., Touboul** M., Walker R.J., Byerly G.R., Nisbet E.G. and Anhaeusser C.R. (2013) Insights into early Earth from Barberton komatiites: evidence from lithophile isotope and trace element systematics. Geochimica et Cosmochimica Acta, 108, 63-90.

Saito**, S., Brown, M., Korhonen**, F.J., McFadden, R.R., and Siddoway, C.S., 2013. Petrogenesis of Cretaceous mafic intrusive rocks, Fosdick Mountains , West Antarctica : Melting of the sub-continental arc mantle along the Gondwana margin. Gondwana Research, 23, 1567–1580.


Brandon , A.D., Puchtel, I.S., Walker , R.J., Day, J.M.D., Irving , A.J. and Taylor , L.A. (2012) Evolution of the martian mantle inferred from the 187Re-187Os isotope and highly siderophile element systematics of shergottites meteorites. Geochimica et Cosmochimica Acta, 76: 206-235, doi:10.1016/j.gca.2011.09.047

Brenan, J.M., Finnigan*, C.F., McDonough, W.F. and Homolova, V. (2012) Experimental constraints on the partitioning of the Ru, Rh, Ir, Pt and Pd between chromite and silicate melt: the importance of ferric iron. Chemical Geology, 302-303: 16-32, doi:10.1016/j.chemgeo.2011.05.015

Corgne, A., Armstrong, L.S., Keshav, S., Fei, Y., McDonough, W.F., Minarik, W.G. and Moreno, K. (2012) Trace element partitioning between majoritic garnet and silicate melt at 10-17 GPa: Implications for deep mantle processes. Lithos, 148: 128-141, doi:10.1016/j.lithos.2012.06.013

Day, J.M.D., Walker, R.J., Ash, R.D., Liu, Y., Rumble, D., Irving, A.J., Goodrich, C.A., Tait, K., McDonough, W.F. and Taylor, L.A. (2012) Origin of felsic achondrites Graves Nunataks 06128 and 06129, and ultramafic brachinites and brachinite-like achondrites by partial melting of volatile-rich primitive parent bodies. Geochimica et Cosmochimica Acta, 81: 94-128, doi:10.1016/j.gca.2011.12.017

Day J.M.D., Walker R.J., Qin L. and Rumble D. (2012) Early timing of late accretion in the solar system. Nature Geoscience, 5, 614-617.

Dolor*, M. K., Helz, G. R. and McDonough, W. F. (2012) Cause of the chalcophile trace element enrichments marking the Holocene to Anthropocene transition in northern Chesapeake Bay sediments. Geochimica et Cosmochimica Acta, 82: 79-91, doi:10.1016/j.gca.2010.06.040

Jenniskens P., Fries M.D., Yin Q-Z., Zolensky M., Krot A.N., Sandford S.A., Sears D., Beauford R., Ebel D.S., Friedrich J.M., Nagashima K., Wimpenny J., Yamakawa A., Nishiizumi K., Hamajima Y., Cafee M.W., Welten K.C., Laubenstein M., Davis A.M., Simon S.B., Heck P.R., Young E.D., Kohl I.E., Thiemens M.H., Nunn M.H., Mikouchi T., Hagiya K., Ohsumi K., Cahil T.A., Lawton J.A., Barnes D., Steele A., Rochette P., Verosub K.L., Gattacceca J., Cooper G., Glavin D.P., Burton A.S., Dwrorkin J.P., Elsila J.E., Pizzarello S., Ogliore R., Schmitt-Koppin P., Harir M., Herkorn N., Verchovsky A., Grady M., Nagao K., Okazaki R., Takechi H., Hiroi T., Smith K., Silber E.A., Brown P.G., Albers J., Klotz D., Hankey M., Matson R., Fries J.A., Walker R.J., Puchtel I., Lee C-T. A., Erdman M.E. , Eppich G.R., Roeske S., Gabelica Z., Lerche M., Nuevo M., Girten B. and Worden S.P. (2012) Radar enable recovery of the Sutter's Mill meteorite, a carbonaceous chondrite regolith breccia. Science, 338, 1583-1587. DOI: 10.1126/science.1227163

Liu* J., Carlson R.W., Rudnick R.L., Walker R.J., Gao S. and Wu F-y. (2012) Comparative Sr-Nd-Hf-Os-Pb isotopic systematics of xenolithic peridotites from Yangyuan, North China Craton: additional evidence for a Paleoproterozoic age. Chemical Geology, 332-333, 1-14.

O'Driscoll, B., Day, J., Walker, R.J., Daly, S., McDonough, W.F. and Piccoli, P.M. (2012) Chemical heterogeneity in the upper mantle recorded by peridotites and chromitites from the Shetland Ophiolite Complex, Scotland, Earth and Planetary Science Letters, 333-334: 226-237,

Penniston-Dorland, S.C., Bebout, G.E., Pogge von Strandmann, P.A.E., Elliott, T. and Sorensen, S.S. (2012) Lithium and its isotopes as tracers of subduction zone fluids and metasomatic processes: Evidence from the Catalina Schist, California , USA . Geochimica et Cosmochimica Acta, 77: 530-545.

Penniston-Dorland, S. C., Walker R.J., Pitcher # L. and Sorensen S. S. (2012) Mantle-crust interactions in a paleosubduction zone: evidence from highly-siderophile element systematics of eclogite and related rocks. Earth and Planetary Science Letters, 319-320, 295-306.

Riches, A.J.V., Day J.M.D., Walker R.J., Simonetti A., Liu Y., Neal C.R., and Taylor L.A. (2012) Rhenium-osmium isotope and highly-siderophile element abundance systematics of angrite meteorites. Earth and Planetary Science Letters, 353-354, 208-218.

Rocha-Júnior, E.R.V., Puchtel I.S., Marques L.S., Walker R.J., Machado F.B., Nardy A.J.R., Babinski M. and Figueiredo A.M.G. (2012) Re-Os isotope and highly siderophile element systematics of the Paraná continental flood basalts (Brazil). Earth and Planetary Science Letters, 337-338, 164-173.

Zhang, W., Hu, Z., Liu, Y., Chen, H., Gao, S., and Gaschnig**, R. (2012) Total rock dissolution using ammonium bifluoride (NH4HF2) in screw-top Teflon vials: a new development in open vessel digestion: Analytical Chemistry, v. 84, p. 10686-10693.


Anagnostou*, E., Sherrell, R. M., Gagnon, A., LaVigne*, M., Field, M. P., and McDonough, W. F. (2011) Seawater nutrient and carbonate ion concentrations recorded as P/Ca, Ba/Ca, and U/Ca in the deep-sea coral D. dianthus. Geochimica et Cosmochimica Acta, 75: 2529–2543, 10.1016/j.gca.2011.02.019

Arévalo* Jr., R., McDonough, W.F. and Piccoli, P.M. (2011) In Situ Determination of First-Row Transition Metal, Ga and Ge Abundances in Geological Materials via Medium-Resolution LA-ICP-MS, Geostandards and Geoanalytical Research, 35: 253-273, 10.1111/j.1751-908X.2010.00099.x

Aulbach**, S., Rudnick, R.L., and McDonough, W.F., 2011, Evolution of the lithospheric mantle beneath the East African Rift in Tanzania and its potential signatures in rift magmas, in Beccaluva, L., Bianchini, G., and Wilson, M., eds., Volcanism and Evolution of the African Lithosphere: Geological Society of America Special Paper 478, p. 105–125, doi:10.1130/2011.2478(06)

Bellucci*, J.J., McDonough, W.F., and Rudnick, R.L. (2011) Thermal history and origin of the Tanzanian Craton from Pb isotope thermochronology of feldspars from lower crustal xenoliths, Earth and Planetary Science Letters, 301: 493-501, 10.1016/j.epsl.2010.11.031

Caciagli*, N., Brenan, J. M., McDonough, W. F. and Phinney, D. (2011) Mineral-Fluid partitioning of lithium and implications for slab-mantle interaction. Chemical Geology, 280: 384-398, DOI: 10.1016/j.chemgeo.2010.11.025

Chabot, N.L., McDonough, W.F., Jones, J.H., Saslow # , S.A., Ash, R.D., Draper, D.S. and Agee, C.B. (2011) Partitioning Behavior at 9 GPa in the Fe-S System and Implications for Planetary Evolution. Earth and Planetary Science Letters, 305: 425-434, DOI: 10.1016/j.epsl.2011.03.027

Connolly # , B.D., Puchtel, I.S., Walker , R.J., Arévalo, Jr., R., Piccoli, P.M., Byerly, G., Robin-Popieul, C. and Arndt, N. (2011) Highly siderophile element systematics of the 3.3 Ga Weltevreden komatiites, South Africa : implications for early Earth history. Earth and Planetary Science Letters,, 311 253–263, doi:10.1016/j.epsl.2011.09.039

Halama**, R., John, T., Herms, P., Hauf, F. and Schenk, V. (2011) A stable (Li, O) and radiogenic (Sr, Nd) isotope perspective on metasomatic processes in a subducting slab. Chemical Geology, 281: 151–166, doi:10.1016/j.chemgeo.2010.12.001

Hanski, E.J., Luo, Z-Y., Oduro*, H. and Walker , R.J. (2011) Pre-emplacement sulphur saturation of Ni-Cu sulphide ore-producing magma at Pechenga , Russia : evidence from feeder dikes. Reviews in Economic Geology, 17, p. 145–162

Hayden, L.A., Van Orman, J.A., McDonough, W.F., Ash, R.D. and Goodrich, C.A. (2011) Trace element partitioning in the Fe-S-C system and its implications for planetary differentiation and the thermal history of ureilites. Chemical Geology, 75: 6570–6583, doi:10.1016/j.gca.2011.08.036

Ireland *, T.J., Walker , R.J. and Brandon , A.D. (2011) 186Os-187Os systematics of Hawaiian picrites revisited: additional insights into the causes of Os isotopic variations in ocean island basalts. Geochimica et Cosmochimica Acta, 75, 4456-4475

Jochum, K.P., Wilson, S., Abouchami, W., Amini, M., Chmeleff, J., Eisenhauer, A., Hegner, E., Iaccheri, L.M., Kieffer, B., McDonough, W.F., Mertz-Kraus, R., Raczek, I., Rudnick, R.L., Scholz, D., Steinhoefel, G., Stoll, B., Stracke, A., Tonarini, S., Weis, D., Weis, U., Woodhead, J.D. (2011) GSD-1G and MPI-DING reference glasses for in-situ and bulk isotopic analysis, Geostandards and Geoanalytical Research, 35: 193-226, doi:10.1111/j.1751-908X.2010.00114.x

Liu*, J.-G., Rudnick, R.L., Walker, R.J., Gao, S., Wu, F.-Y., Piccoli, P.H., Yuan, H.L., Xu, W.L., Xu, Y.G. (2011) Mapping lithospheric boundaries using Os isotopes of mantle xenoliths: an example from the North China Craton, Geochimica et Cosmochimica Acta, 75: 3881-3902, doi:10.1016/j.gca.2011.04.018

McCoy, T.J., Walker, R.J., Goldstein, J.I., Yang, J., McDonough, W.F., Rumble, D., Chabot, N.L., Ash, R.D., Corrigan, C.M., Michael, J. R. and Kotula, P.G. (2011) Group IVA Irons: New Constraints on the Crystallization and Cooling History of an Asteroidal Core with a Complex History. Geochimica et Cosmochimica Acta, 75: 6821–6843, doi:10.1016/j.gca.2011.09.006

Mengason*, M. J., Candela, P. A., Piccoli, P.M. (2011) Molybdenum, tungsten and manganese partitioning in the system pyrrhotite–Fe–S–O melt–rhyolite melt: Impact of sulfide segregation on arc magma evolution. Geochimica et Cosmochimica Acta, 75: 7018-7030, doi:10.1016/j.gca.2011.08.042.

Qiu*, L., Rudnick, R.L., Ague, J.J., and McDonough, W.F. (2011) A lithium isotopic study of sub-greenschist to greenschist facies metamorphism in an accretionary prism, New Zealand . Earth and Planetary Science Letters, 301: 213–221, DOI: 10.1016/j.epsl.2010.11.001

Qiu*, L., Rudnick, R.L., McDonough, W.F., and Bea, F. (2011) The behavior of lithium in amphibolite- to granulite-facies rocks of the Ivrea-Verbano Zone, NW Italy. Chemical Geology, 289: 76–85, doi:10.1016/j.chemgeo.2011.07.014.

Riches, A.J.V., Liu, Y., Day, J.M.D., Puchtel, I.S., Rumble, D., McSween, H.Y., Walker , R.J. and Taylor, L.A. (2011) The petrology and geochemistry of Yamato 984028: a cumulate lherzolitic shergottites with affinities to Y 000027, Y 000047, and Y 000097. Polar Science, 4, 497-514.

Wheeler*, K. T., Walker, D. and McDonough, W. F. (2011) Pd and Ag metal-silicate partitioning applied to Earth differentiation and core-mantle exchange. Meteoritics and Planetary Science, 46: 199-217, DOI:10.1111/j.1945-5100.2010.01145.x

Yokoyama**, T., Alexander, C.M.O'D. and Walker , R.J. (2011) Assessment of nebular versus parent body processes on presolar components in chondrites: evidence from Os isotopes. Earth and Planetary Science Letters, 305, 115-123, doi:10.1016/j.epsl.2011.02.046


Arévalo* Jr., R. and McDonough, W. F. (2010) Chemical variations and regional diversity observed in MORB. Chemical Geology, 271: 70-85, 10.1016/j.chemgeo.2009.12.013.

Arévalo* Jr., R., Bellucci*, J. and McDonough, W. F. (2010) GGR Biennial Review: Advances in Laser Ablation and Solution ICP-MS from 2008 to 2009 with Particular Emphasis on Sensitivity Enhancements, Mitigation of Fractionation Effects and Exploration of New Applications. Geostandards and Geoanalytical Research, 34: 327-341, 10.1111/j.1751-908X.2010.00934.x.

Chabot, N.L., Safko # , T.M. and McDonough, W.F. (2010) Effect of silicon on trace element partitioning in iron-bearing metallic melts. Meteoritics and Planetary Science, 45: 1243–1257, 10.1111/j.1945-5100.2010.01078.x.

Day**, J.M.D., Walker, R.J., James, O.B. and Puchtel, I.S. (2010) Osmium isotope and highly siderophile element systematics of the lunar crust. Earth and Planetary Science Letters, 289, 595-605.

Iñañez, J. G., Bellucci*, J. J., Rodríguez-Alegría, E., Ash, R., McDonough, W. F. and Speakman, R. J. (2010) Romita pottery revisited: A reassessment of the provenance of ceramics from Colonial Mexico by LA-MC-ICP-MS, Journal of Archaeological Science, 37: 2698-2704, 10.1016/j.jas.2010.06.005

Kar S., Boncher W.L., Olszewski D., Dollahon N., Ash R.D. and Stoll S.L. (2010) Gadolinium doped europium sulfide. Journal of the American Chemical Society, 132 13960-13962

Korhonen**, F., Saito**, S., Brown, M., Siddoway, C. and Day, J.M.D. (2010) Multiple generations of granite in the Fosdick Mountains, Marie Byrd Land, West Antarctica: Implications for polyphase intracrustal differentiation in a continental margin setting. Journal of Petrology, 51, 627-670.

Lehner, S. W., Buseck, P. R. and McDonough, W. F. (2010) Origin of metal-sulfide nodules in the enstatite chondrite Sahara 97072 (EH3). Meteoritics and Planetary Sciences, 45: 289-303, 10.1111/j.1945-5100.2010.01027.x

Liu*, J.-G., Rudnick, R.L., Walker , R.J., Gao, S., Wu, F.-Y. and Piccoli, P.M. (2010) Processes controlling highly-siderophile element fractionations in xenolithic peridotites and their influence on Os isotopes, Earth and Planetary Science Letters, 297: 287-297, doi:10.1016/j.epsl.2010.06.030.

Liu*, X.-M., Rudnick, R.L., Hier-Majumder, S., Sirbescu, M.L.C. (2010) Processes controlling lithium isotopic distribution in contact aureoles: a case study of the Florence County Pegmatites, Wisconsin, Geochemistry, Geophysics, Geosystems, 11 (8): doi:10.1029/2010GC003063.

Penniston-Dorland , S.C. , Sorensen, S.S., Ash, R.D., and Khadke # , S.V. (2010) Lithium isotopes as a tracer of fluids in a subduction zone mélange: Franciscan Complex, CA. Earth and Planetary Science Letters, 292, 181-190.

Scheiderich*, K., Helz, G.R. and Walker , R.J. (2010) Century-long record of Mo isotopic composition in sediments of a seasonally anoxic estuary ( Chesapeake Bay ). Earth and Planetary Science Letters, 289, 189-197.

Scheiderich*, K., Zerkle**, A.L., Helz, G.R., Farquhar, J. and Walker , R.J. (2010) Molybdenum isotope, multiple sulphur isotope, and redox-sensitive element behaviour in early Pleistocene Mediterranean sapropels. Chemical Geology, 279, 134-144.

Teng, F.Z., Li, W.Y., Rudnick, R.L. and Gardner, L.R. (2010) Contrasting lithium and magnesium isotope fractionation during continental weathering, Earth and Planetary Science Letters, 300: 63-71, doi:10.1016/j.epsl.2010.09.036.

Tepley III, F. J., Lundstrom, C. C. McDonough, W. F. and Thompson, A. (2010) Trace element partitioning between high-An plagioclase and basaltic to basaltic andesite melt at 1 atmosphere pressure. Lithos, 118: 82-94, 10.1016/j.lithos.2010.04.001

van Acken*, D. Becker, H Walker, R. J., McDonough, W. F., Wombacher, F., Ash, R. D. and Piccoli, P. M. (2010) Formation of pyroxenite layers in the Totalp ultramafic massif (Swiss Alps) – insights from highly siderophile elements and Os isotopes. Geochimica et Cosmochimica Acta, 74: 661-683, 10.1016/j.gca.2009.10.007

Van Acken*, D., Becker, H., Hammerschmidt, K., Walker, R.J. and Wombacher, F. (2010) Highly siderophile elements and Sr-Nd isotopes in refertilized mantle peridotites – a case study from the Totalp ultramafic massif, Swiss Alps, Chemical Geology, 276, 257-268.

Yang, J-H., O'Reilly, S., Walker, R.J., Griffin , W., Wu, F-Y., Zhang, M. and Pearson, N. (2010) Diachronous decratonization of the Sino-Korean Craton: geochemistry of mantle xenoliths from North Korea . Geology, 38, 799-80, doi:10.1130/G30944.1

Yokoyama**, T., Alexander, C.M.O'D. and Walker , R.J. (2010) Osmium isotope anomalies in chondrites: results for acid residues enriched in insoluble organic matter. Earth and Planetary Science Letters, 291, 48-5, doi:10.1016/j.epsl.2011.02.046


Ackerman L., Walker R.J., Puchtel I.S., Pitcher # L., Jelínek E. and Strnad L. (2009) Effects of melt perolation on highly siderohile elements and Os isotopes in subcontinental lithospheric mantle: a study of the upper mantle profile beneath Central Europe . Geochimica et Cosmochimica Acta, 73, 2400-2414.

Arévalo* Jr., R., McDonough, W.F. and Luong # , M. (2009) The K/U ratio of the silicate Earth: Insights into mantle composition, structure and thermal evolution. Earth and Planetary Science Letters, 278: 361-369.

Aulbach**, S. and Rudnick, R.L. (2009) Origins of non-equilibrium lithium isotopic fractionation in xenolithic peridotite minerals: examples from Tanzania , Chemical Geology, 258: 17-27, doi:10.1016/j.chemgeo.2008.07.015.

Black, J. R., Umeda, G., Dunn, B., McDonough, W.F. and Kavner, A. (2009) The electrochemical isotope effect and lithium isotope separation. Journal of the American Chemical Society, 131: 9904-9905. 10.1021/ja903926x

Brenan, J. M. and McDonough, W. F. (2009) Core formation and metal-silicate fractionation of osmium and iridium from gold. Nature Geosciences, .2: 798-801.

Chabot, N.L., Saslow # , S., McDonough, W.F. and Jones, J. H. (2009) An investigation of the behavior of Cu and Cr during iron meteorite crystallization. Meteoritics and Planetary Science, 44: 505-519.

Chu, Z.-Y., Wu, F.-Y., Walker , R.J., Rudnick, R.L., Pitcher # , L., Puchtel, I.S., Yang, Y.-H. and Wilde, S.A. (2009) Temporal evolution of the lithospheric mantle beneath the eastern North China Craton, Journal of Petrology, 50: 1857-1898, doi:10.1092/petrology/egp055.

Corrigan, C. M., Chabot, N. L., McCoy, T. J., McDonough, W. F., Ash, R. D., Saslow # , S. A. and Watson, H. C. (2009) The iron–nickel–phosphorus system: Effects on the distribution of trace elements during the evolution of iron meteorites. Geochimica et Cosmochimica Acta, 73: 2674–2691

Dasgupta, R., Hirschmann, M. M., McDonough, W. F., Spiegelman, M. and Withers, A. C., (2009) Role of Carbonatitic Melt in Mantle Geochemistry Based on New Mineral-Melt Trace Element Partitioning Experiments. Chemical Geology, 262: 57–77

Day**, J.M.D., Ash, R.D., Liu, Y., Bellucci*, J.J., Rumble III, D., McDonough, W.F., Taylor , L.A. and Walker , R.J. (2009) “Day et al. reply to Replying to: R. Arculus, I. H. Campbell, S. M. McLennan & S. R. Taylor Nature, 459, doi:10.1038/nature08077 (2009) doi:10.1038/nature08078.

Day**, J.M.D., Ash, R.D., Liu, Y., Bellucci*, J.J., Rumble III, D., McDonough, W.F., Taylor , L.A. and Walker , R.J. (2009) Early Formation of evolved asteroidal crust. Nature, 457: 179-182.

Dolor*, M. K., Helz, G. R. and McDonough, W. F. (2009) Sediment profiles of less commonly determined elements measured by Laser Ablation ICP-MS. Marine Pollution Bulletin, 52: 182-192. doi:10.1016/j.marpolbul.2009.03.027

Halama**, R., Savov, I., Rudnick, R.L. and McDonough, W.F. (2009) Insights into Li and Li isotope cycling and sub-arc metasomatism from veined mantle xenoliths, Kamchatka, Contributions to Mineralogy and Petrology, 158:197–222. DOI 10.1007/s00410-009-0378-5

Ireland *, T., Walker , R.J. and Garcia, M.O. (2009) Highly siderophile element and 187Os isotopes systematics of Hawaiian picrites: Implications for parental melt composition and source heterogeneity. Chemical Geology, 260, 112-128.

Ireland *, T., Arévalo*, Jr., R., Walker, R. J. and McDonough, W. F. (2009) Tungsten in Hawaiian picrites: a compositional model for the sources of Hawaiian lavas. Geochimica et Cosmochimica Acta, 73: 4517-4530.

O'Driscoll, B., Day**, J. M. D., Daly, J. S., Walker, R. J. and McDonough, W. F. (2009) Rhenium-osmium isotopes and platinum-group elements in the Rum Layered Suite, Scotland : Implications for Cr-spinel seam formation and the composition of the Iceland mantle anomaly. Earth and Planetary Science Letters, 286: 41-51.

Pitcher # , L., Helz, R.T., Walker , R.J. and Piccoli, P.M. (2009) Fractionation of the platinum-group elements and Re during crystallization of basalt in Kilauea Iki lava lake, Hawaii . Chemical Geology, 260, 196-210.

Puchtel, I.S., Walker, R.J., Anhaeusser, C.R. and Gruau, G. (2009) Re-Os isotope systematics and HSE abundances of the 3.5 Ga Schapenburg komatiites, South Africa: evidence for hydrous melting or prolonged survival of primordial heterogeneities in the mantle? Chemical Geology, 262, 391-405.

Puchtel, I.S., Walker , R.J., Brandon , A.D., and Nisbet, E.G. (2009) Pt–Re–Os and Sm–Nd isotope and HSE and REE systematics of the 2.7 Ga Belingwe and Abitibi komatiites. Geochimica et Cosmochimica Acta, 73: 6357-6389.

Qin, K., Zhao, L., Ash, R.D., McDonough, W.F. and Zhao R. Y. (2009) ATM-mediated transcriptional elevation of prion to copper-induced oxidative stress. Journal of Biological Chemistry, 284: 4582–4593, doi:10.1074/jbc.M808410200

Qiu*, L., Rudnick, R. L., McDonough, W. F. and Merriman, R. J. (2009) Li and d7Li in mudrocks from the British Caledonides: Metamorphism and source influences. Geochimica et Cosmochimica Acta, 73: 7325-7340 doi:10.1016/j.gca.2009.08.017

Reno *, B.L., Brown, M., Kobayashi, O.T., Nakamura, E., Piccoli, P.M. and Trouw, R.A.J., 2009. Eclogite–high-pressure granulite metamorphism records early collision in West Gondwana: New data from the Southern Brasília Belt, Brazil . Journal of the Geological Society, 166, 1013-1032. doi:10.1144/0016-76492008-140

Schulte*, R.F., Schilling, M., Horan, M.F., Anma, R., Komiya, T., Farquhar, J., Piccoli, P.M., Pitcher # , L. and Walker, R.J. (2009) Chemical and chronologic complexity in the convecting upper mantle: evidence from the Taitao Ophiolite, southern Chile . Geochimica et Cosmochimica Acta, 73, 5793-5819.

Teng*, F. Z., Rudnick, R.L., McDonough, W. F. and Wu, F-Y. (2009) Lithium isotopic systematics of A-type granites and their mafic enclaves: Further constraints on the Li isotopic composition of the continental crust. Chemical Geology, 262: 415–424.

Walker , R.J. (2009) Highly siderophile elements in the Earth, Moon and Mars: Update and implications for planetary accretion and differentiation. Chemie der Erde, 69, 101-125. Invited Review.

Yokoyama**, D., Walker, D. and Walker, R.J. (2009) Low osmium solubility in silicate at high pressures and temperatures. Earth Planetary Science Letters, 279, 165-173.


Arévalo* Jr., R and McDonough, W. F. (2008) Tungsten geochemistry and implications for understanding the Earth's interior. Earth and Planetary Science Letters, 272: 656-665.

Aulbach**, S., Rudnick, R.L. and McDonough, W.F. (2008) Li-Sr-Nd Isotope Signatures of the Plume and Cratonic Lithospheric Mantle Beneath the Margin of the Rifted Tanzanian Craton (Labait), Contributions to Mineralogy and Petrology, 155: 79-92.

Carmichael*, S. K., Ferry, J. M. and McDonough, W. F. (2008) Formation of replacement dolomite in the Latemar carbonate buildup, Dolomites, Northern Italy : Part I. Field relations, mineralogy and Geochemistry. American Journal of Science, 308: 851-884.

Chabot, N. L., Campbell, A. J., McDonough, W. F., Draper, D. S., Agee, C. B., Humayun, M., Watson, H. C., Cottrell, E. and Saslow # , S. A. (2008) Trace Element Partitioning in the Fe-C system at 5 GPa: Implications for Earth's Core. Geochimica et Cosmochimica Acta, 72: 4146-4158.

Corgne, A., Keshav, S., Wood, B.J., McDonough, W.F. and Fei, Y. (2008) New metal-silicate partition coefficients and constraints on core composition and oxygen fugacity during Earth accretion. Geochimica et Cosmochimica Acta, 72: 574-589.

Finnigan*, C. S., Brenan, J. M., Mungall, J. E. and McDonough, W. F. (2008) Experiments and models bearing on the role of chromite as a collector of platinum group minerals by local reduction. Journal of Petrology, 49: 1647-1665.

Gao S., Rudnick, R.L., Xu, W-L., Yuan, H-L., Liu, Y-S., Walker , R.J., Puchtel, I.S., Liu, X., Huang, H. and Wang, X-R. (2008) Recycling deep cratonic lithosphere and generation of intraplate magmatism in the North China Craton. Earth Planetary Science Letters, 270, 41-53.

Halama**, R., McDonough, W.F., Rudnick, R.L. and Bell , K. (2008) Tracking the lithium isotopic evolution of the mantle using carbonatites. Earth and Planetary Science Letters, 265: 726-743.

Maloney, J.S., Nabelek, P.I., Sirbescu, M-L.C. and Halama**, R. (2008) Lithium and its isotopes in tourmaline as indicators of the crystallization process in the San Diego County pegmatites, California, USA., European journal of Mineralogy, 20: 905–916.

Marks, M. A., Rudnick, R. L., Ludwig, T., Marschall, H., Zack, T., Halama**, R., McDonough, W.F., Rost, D., Wensel, T., Vicenzi, E. P., Savov, I. P., Altherr, R. and Markl, G. (2008) Sodic pyroxene and sodic amphibole as potential reference materials for in-situ Li isotope analyses by SIMS. Geostandards and Geoanalytical Research, 32: 295-310.

Matthews*, K. A., Grottoli, A. G., McDonough, W. F. and Palardy#, J. E. (2008) Upwelling, species and depth effects on coral skeletal cadmium to calcium ratios (Cd/Ca). Geochimica et Cosmochimica Acta, 72: 4537-4550.

Puchtel, I.S., Walker , R.J., James, O.B. and Kring, D.A. (2008) Osmium isotope and highly siderophile element systematics of lunar impact melt rocks: Implications for the late accretion history of the Moon and Earth. Geochimica et Cosmochimica Acta, 72, 3022-3042.

Simon*, A.C., Candela, P.A, Piccoli, P.M., Mengason*, M., Englander*, L. (2008) The effect of crystal-melt partitioning on the budgets of Cu, Au, and Ag. American Mineralogist, (93), 1437-1448.

Teng*, F.-Z., Rudnick, R. L., McDonough, W. F., Gao, S., Tomascak, P. B. and Liu, Y. (2008) Lithium isotopic composition and concentration of the deep continental crust. Chemical Geology, 255: 47-59.

Ushikubo, T., Kita, N.T., Cavosie, A.J., Wilde, S.A., Rudnick, R.L. and Valley, J.W. (2008) Lithium in Jack Hills zircons: evidence for extreme weathering of Earth's earliest crust, Earth and Planetary Science Letters, 272: 666-676, doi:10.1016/j.epsl.2008.05.032.

Van Acken* D., Becker H. and Walker R.J. (2008) Mantle refertilization processes and their impact on the Re-Os systematics of peridotites: a case study from the Totalp ultramafic massif, eastern Switzerland . Earth and Planetary Science Letters, 268, 171-181.

Walker , R.J., McDonough, W.F., Honesto*, J., Chabot, N.L., McCoy, T.M., Ash, R.D. and Bellucci*, J.J. (2008) Modeling fractional crystallization of group IVB iron meteorites. Geochimica et Cosmochimica Acta, 72: 2198-2216.


Baldwin **, J.A., Brown, M. and Schmitz, M.D., (2007) First application of titanium-in-zircon thermometry to ultrahigh-temperature metamorphism. Geology, 35: 295-298, DOI: 10.1130/G23285A.1

Chabot, N.L., Saslow # , S.A. , McDonough, W.F. and McCoy T.J. (2007) The effect of Ni on iron meteorite crystallization. Meteoritics and Planetary Science, 42: 1735-1750.

Corgne, A., Keshav, S. Fei , Y. and McDonough, W.F. (2007) How much potassium is in the Earth's core? New insights from partitioning experiments. Earth and Planetary Science Letters, 256: 567-576.

Halama**, R., McDonough, W.F., Rudnick, R.L., Keller, J. and Klaudius, J. (2007) The Li isotopic composition of Oldoinyo Lengai: nature of the mantle sources and lack of isotopic fractionation during carbonatite petrogenesis. Earth and Planetary Science Letters, 254: 77-89.

Marks, M., Rudnick, R.L., McCammon, C., Vennemann, T. and Markl, G. (2007) Arrested kinetic Li isotopic fractionation at the margin of the Ilímaussaq complex, South Greenland: evidence for open-system processes during final cooling of peralkaline igneous rock, Chemical Geology, 246: 207-230, doi:10.1016/j.chemgeo.2007.10.001.

Puchtel, I.S., Humayun, M., and Walker , R.J. (2007) Os-Pb-Nd isotope and highly siderophile and lithophile trace element systematics of komatiitic rocks from the Volotsk suite, SE Baltic Shield. Precambrian Research, 158: 119-137

Rudnick, R.L. and Ionov, D.A. (2007) Lithium elemental and isotopic disequilibrium in minerals from peridotite xenoliths from far-east Russia : product of recent melt/fluid-rock reaction, Earth and Planetary Science Letters, 256: 278-293, doi:10.1016/j.epsl.2007.01.035.

Teng*, F.Z., McDonough, W.F., Rudnick, R.L., and Wing**, B. (2007). Limited lithium isotopic fractionation during progressive metamorphic dehydration in metapelites: A case study from the Onawa contact aureole, Maine . Chemical Geology, 239: 1-12.

Walker , R.J., Bohlke, J.K., McDonough, W.F. and Li*, J. (2007) Effects of mother lode-type gold mineralization on 187Os/188Os and platinum group element concentrations in peridotite: Alleghany district, California . Economic Geology, 102: 1079-1089.

Yokoyama**, T., Rai, V.K., Alexander, C.M.O'D., Lewis, R.S., Carlson, R.W., Shirey, S.B., Thiemens, M.H. and Walker, R.J. (2007) Osmium isotope evidence for uniform distribution of s- and r-process components in the early solar system. Earth and Planetary Science Letters, 259, 567-580.

Yuan, H.-L., Gao, S., Rudnick, R.L., Jin, Z., Liu, Y., Puchtel, I.S., Walker, R.J., and Yu, R. (2007) Re-Os evidence for age and origin of peridotites from the Dabie-Sulu ultrahigh pressure metamorphic belt, China, Chemical Geology, 236: 323-338.


Becker, H., Horan, M.F., Walker , R.J., Gao, S., Lorand, J.-P. and Rudnick, R.L. (2006) Highly siderophile element composition of the Earth's primitive upper mantle: Constraints from new data on peridotite massifs and xenoliths. Geochimica et Cosmochimica Acta, 70, 4528-4550.

Gangopadhyay*, A., Walker, R.J., Hanski, E. and Solheid, P. (2006) Origin of Paleoproterozoic Ti-enriched komatiitic rocks from Jeesiörova, Kittilä Greenstone Complex, Finnish Lapland. Journal of Petrology, 47, 773-789.

Huang*, F., Lundstrom, C.C. and McDonough, W.F. (2006) Effect of melt structure on trace-element partitioning between clinopyroxene and silicic, alkaline, aluminous melts. American Mineralogist, 91: 1385-1400.

Lee**, S. R. and Walker, R. J. (2006) Re-Os isotope systematics of mantle xenoliths from South Korea : evidence for complex growth and loss of lithospheric mantle beneath East Asia . Chemical Geology, 231, 90-101.

Lee**, S. R., Horton, J.W. and Walker, R.J. (2006) Osmium-isotope and platinum-group element systematics of impact melt rocks, Chesapeake Bay Impact Structure, Virginia, USA. Meteoritics and Planetary Sciences, 41, 819-833.

Lundstrom, C.C., Sutton # , A.L., Chaussidon, M., McDonough, W.F., Ash, R (2006) Trace element partitioning between type BCAI melts and melilite and spinel: Implications for trace element distribution during CAI formation. Geochimica et Cosmochimica Acta, 70: 3421-3435.

Matthews*, K.A., McDonough, W.F., and Grottoli, A.G. (2006) Cadmium measurements in coral skeleton using isotope dilution-inductively coupled plasma-mass spectrometry. Geochemistry, Geophysics. Geosystems, 7, Q11021, doi:10.1029/2006GC001352.

Pietruszka**, A.J., Walker , R.J. and Candela, P.A. (2006) Determination of mass dependent molybdenum isotopic variations by MC-ICP-MS: an evaluation of matrix effects. Chemical Geology, 225, 121-136.

Teng*, F.-Z., McDonough, W.F., Rudnick, R.L. and Walker , R.J. (2006) Diffusion-driven extreme lithium isotopic fractionation in country rocks of the Tin Mountain pegmatite. Earth and Planetary Science Letters, 243: 701-710.

Teng*, F.-Z., McDonough, W.F., Rudnick, R.L., Walker , R. and Sirbescu, M.-L. C. (2006) Lithium isotopic systematics of granites and pegmatites from the Black Hills, South Dakota . American Mineralogist, 91: 1488-1499.

Wheeler*, K.T., Walker , D., Fei, Y.W., Minarik, W.G. and McDonough, W.F. (2006) Experimental partitioning of uranium between liquid iron sulfide and liquid silicate: Implications for radioactivity in the Earth's core. Geochimica et Cosmochimica Acta, 70: 1537-1547.

Wu, F-Y., Walker , R.J., Yang, Y-H., Yuan, H-L., and Y and, J-H. (2006) The chemical-temporal evolution of lithospheric mantle underlying the North China Craton. Geochimica et Cosmochimica Acta, 70, 5013-5034.


Brenan, J.M., McDonough, W.F. and Ash, R. (2005) An experimental study of the solubility and partitioning of iridium, osmium and gold between olivine and silicate melt. Earth and Planetary Science Letters, 237: 855-872.

Gangopadhyay*, A., Sproule, R.A., Walker , R.J. and Lesher, M. (2005) Re-Os systematics of komatiites and komatiitic basalts at Dundonald Beach , Ontario , Canada : Evidence for a complex alteration history and implications of a late-Archean chondritic mantle source. Geochimica et Cosmochimica Acta, 69, 5087-5098.

Hall, J.M., Chan, L.H., McDonough, W.F. and Turekian, K.K. (2005) Determination of lithium isotopic composition of planktic foraminifera and its application as a paleo-seawater proxy. Marine Geology, 217: 255-265.

Keshav, S., Corgne, A., Gudfinnsson, G.H., Bizimis, M., McDonough, W.F. and Fei, Y. W. (2005) Kimberlite petrogenesis: Insights from clinopyroxene-melt partitioning experiments at 6 GPa in the CaO-MgO-Al2O3-SiO2-CO2 system. Geochimica et Cosmochimica Acta, 69: 2829-2845.

Puchtel, I.S., Brandon , A.D., Humayun, M. and Walker , R.J. (2005) Evidence for the early differentiation of the core from Pt-Re-Os isotope systematics of 2.8-Ga komatiites. Earth and Planetary Science Letters, 237: 118-134.

Walker , R.J., Brandon , A.D., Bird, J.M., Piccoli, P.M., McDonough, W.F. and Ash, R.D. (2005) 187Os- 186Os systematics of Os-Ir-Ru alloy grains from southwestern Oregon . Earth and Planetary Science Letters, 230: 211-226.


Balykin, P.A., Polyakov, G.V., Hanski, E., Walker, R.J., Huhma, H., Glotov, A.I., Trang Trong Hoa, Ngo Thi Phuong, Hoang Huu Thanh, Tran Quoc Hung, Petrova, T.E. (2004) Late-Permian komatiite-basalt complex in the Song Da rift, northwestern Vietnam. Journal of Geology ( Vietnam ), Series B, No. 23, 52-64.

Cook*, D.L. Walker, R.J., Horan, M.F., Wasson, J.T. and Morgan, J.W. (2004) Pt-Re-Os systematics of group IIAB and IIIAB iron meteorites. Geochimica et Cosmochimica Acta, 68, 1413-1431.

Gelinas # A., Kring, D.A., Zurcher, L., Urrutia-Fucugauchi, J., O. Morton, and Walker , R.J. (2004) Osmium isotope constraints on the proportion of bolide component in Chicxulub impact melt rocks. Meteoritics and Planetary Sicences,.39, 1003-1008.

Hanski, E.J., Walker, R.J. Huhma, H., Polyakov, G.V., Glotov, A.I., Tran, Trong Hoa, Ngo, Thi, Phuong (2004) Origin of Permo-Triassic komatiites, northwestern Vietnam. Contributions to Mineralogy and Petrology, 147, 453-469.

McDaniel**, D.K., Walker , R.J., Hemming, S.R., Horan, M.F., Becker, H. and Grauch, R. I. (2004) Sources of osmium to the modern oceans: New evidence from the 190Pt-186Os system. Geochimica et Cosmochimica Acta, 68, 1243-1252.

Rudnick, R.L., Gao, S., Ling, W., Liu, Y.-S. and McDonough, W.F. (2004) Petrology and geochemistry of spinel peridotite xenoliths from Hannuoba and Qixia, North China craton, In (Mitchell, R., Scott-Smith, B., Heaman, L., Stachel, T., eds.) Proceedings of the Eighth International Kimberlite Conf., Lithos, 77: 609-637.

Rudnick, R.L., Tomascak, P.B., Njo # , H.B., Gardner, R.L. (2004) Extreme isotopic fractionation during continental weathering revealed in saprolites from South Carolina , Chemical Geology, 212: 45-58.

Teng*, F.-Z., McDonough, W.F., Rudnick, R.L., Dalpe, C., Tomascak, P.B., Chappell, B.W. and Gao, S. (2004) Lithium Isotopic Composition and Concentration of the Upper Continental Crust. Geochimica et Cosmochimica Acta, 68: 4167-4178.

Walker , R. J., Horan, M.F., Shearer, C.K. and Papike, J.J. (2004) Depletion of highly siderophile elements in the lunar mantle: evidence for prolonged late accretion. Earth and Planetary Science Letters, 224, 399-413.

Wiebe, R.A., Manon, M.R., Hawkins, D.P. and McDonough, W.F. (2004) Late stage mafic injection and thermal rejuvenation of the Vinalhaven Granite, coastal Maine . Journal of Petrology, 45: 2133-2153, doi:10.1093/petrology/egh050.


Becker, H. and Walker , R.J. (2003) Efficient mixing of the solar nebula from uniform Mo isotopic composition of meteorites. Nature, 425, 152-155.

Becker, H. and Walker, R.J. (2003) The 98Tc-98Ru and 99Tc-99Ru chronometers: new results on iron meteorites and chondrites. Chemical Geology, 196, 43-56.

Brenan, J. M., McDonough, W.F. and Dalpe, C. (2003) Experimental constraints on the partitioning of rhenium and some platinum-group elements between olivine and silicate melt. Earth and Planetary Science Letters, 212: 135-150.

Gangopadhyay*, A. and Walker , R.J. (2003) Re-Os systematics of the ca. 2.7 Ga Alexo komatiites, Ontario , Canada . Chemical Geology, 196, 147-162.

Wu, F., Walker , R.J., Ren, X-w, Sun, D-y and Zhou, X-h. (2003) Osmium isotopic constraints on the age of lithospheric mantle beneath northeastern China . Chemical Geology, 196, 107-129.

Zack**, T., Tomascak, P.B., Rudnick, R.L., Dalpe, C. and McDonough, W.F. (2003) Extremely light Li in orogenic eclogites: The role of isotope fractionation during dehydration in subducted oceanic crust. Earth and Planetary Science Letters, 208: 279-290.


Becker, H., Dalpe, C. and Walker, R.J. (2002) High precision Ru isotopic measurements by multi-collector ICP-MS. The Analyst, 127, 775-780.


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