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Publications

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Publications in Refereed Journals and Books

35) Kelly, P.J., P.R. Kyle, N.W. Dunbar, and K.W.W. Sims (2008). "Geochemistry and mineralogy of the phonolite lava lake, Mount Erebus volcano, Antarctica: 1972 - 2004 and comparison with older lavas." Invited article submitted to special volume on Mt Erebus in Journal of Volcanology and Geothermal Research (in press).

34) Sims, K.W.W., J. Blichert-Toft, P.R. Kyle, S. Pichat, J. Bluzstajn, P.J. Kelly, L.A. Ball, and G. D. Layne (2008). "A Sr, Nd, Hf, and Pb isotope perspective on the genesis and long-term evolution of alkaline magmas from Erebus volcano, Antarctica." Invited article for special volume on Mt Erebus in Journal of Volcanology and Geothermal Research (in press).

33) Sims, K.W.W., S.R. Hart, M.K. Reagan, J. Blusztajn, H. Staudigel, R.A. Sohn, G.D. Layne, L.A. Ball and J. Andrews (2008). "238U-230Th-226Ra-210Pb-210Po, 232Th-228Ra and 235U-231Pa constraints on the ages and petrogenesis of Vailulu and Malumalu Lavas, Samoa." Geochemistry, Geophysics and Geosystems, 9, Q04003, doi:10.1029/2007GC001651

32) Sims, K.W.W., J. Gill, A. Dossetto, D. Hoffmann, C.C. Lundstom, R. Williams, L.A. Ball, D. Tollstrup, S.P. Turner, J. Prytulak, J. Glessner, J.J. Standish, and T. Elliott (2008). "An inter-laboratory assessment of the Th Isotopic Composition of Synthetic and Rock standards." Geostandards and Analytical Research, 32, 1, 65-91.

31) Elkins, L., G.A. Gaetani, and K.W.W. Sims (2008). "Partitioning of U and Th during garnet pyroxenite melting: constraints on sources of alkaline ocean island basalts." Earth and Planetary Science Letters, 265, 270-286, doi:10.1016/j.epsl.2007.10.034.

30) Ball, L.A., K.W.W. Sims, and J. Schwieters (2008). "Measurement of 234U/238U and 230Th/232Th in volcanic rocks using the Neptune PIMMS." Journal Analytical Atomic Spectrometry, 23, 173-180. doi: 10.1039/b703193a

29) Turner, S.P., K.W.W. Sims, and M.K. Reagan (2007). "A 210Pb-226Ra-230Th-238U study of Klyuchevskoy and Bezymianny volcanoes, Kamchatka." Geochimica Cosmochimica Acta, 71, 4771-4785. doi: 10.1016/j.gca.2007.08.006.

28) Giammanco, K.W.W. Sims and S., M. Neri (2007). "Shallow rock stresses and gas transport at Mt. Etna (Italy) monitored through 220Rn, 222Rn and soil CO2 emissions in soil and fumaroles." Geochemistry, Geophysics and Geosystems, 8, Q10001, doi:1029/2007GC00164

27) Moune, S., F. Faure, P.-J. Gauthier, and K.W.W. Sims (2007). Pele's hairs and tears: natural probe of volcanic plume. Journal of Volcanology and Geothermal Research, 164, 244-253, doi:10.1016/j.jvolgeores.2007.05.07. 

26) Sims, K.W.W., R.P. Ackert, Jr., F. Ramos, R.A. Sohn, M.T. Murrell, and D.J. DePaolo (2007). Determining eruption ages and erosion rates of Quaternary basaltic volcanism from combined U-series disequilibria and cosmogenic exposure ages. Geology, vol 35, pp 471-474, doi:10.1130/G23381A.1.

25) Aciego, S.M., D.J. DePaolo, B.M. Kennedy, M.P. Lamb, K.W.W. Sims, and W. Dietrich (2007). Combining [3He] cosmogenic dating with U-Th/He eruption ages using olivine in basalt. Earth and Planetary Science Letters, vol 254, number 3-4, pp 288-302, doi: 10.1016/j.epsl.2006.11.039.

24) Sims, K.W.W. and S. R. Hart (2006). Comparison of Th, Sr, Nd and Pb Isotopes in Oceanic Basalts: Implications for Mantle Heterogeneity and Magma Genesis. Earth and Planetary Science Letters, vol 245, pp 743-761, doi: 10.1016/j.epsl.2006.02.030.

23) Sohn, R.A. and K.W.W. Sims (2005). Bending as a mechanism for triggering off-axis volcanism on the East Pacific Rise. Geology, vol 33, number 2, 93-96, doi: 10.1130/G21116.1.

22) Pichat, S., K.W.W. Sims, R. François, J.F. McManus, S. Brown-Legger, and F. Albarède (2004). Lower export production during glacial periods in the equatorial Pacific as derived from (231Pa/230Th)measurements in deep-sea sediments. Paleoceanography, vol 19, PA 4023.

21) Drakos, P., K.W.W Sims, J. Riesterer, J. Blusztajn, and J. Lazarus (2004). Chemical and Isotopic Constraints On Source-Waters and Connectivity Of Basin-Fill Aquifers in the Southern San Luis Basin, New Mexico. Invited, peer reviewed article for New Mexico Geological Society Guidebook, Geology ofthe Taos Region, pp 405-414.

20) Frank J. Tepley, III, C.C. Lundstrom, K.W.W. Sims, and R. Hékinian (2004). U-series Disequilibria in MORB From the Garrett Transform and Implications for Mantle Melting. Earth and Planetary Science Letters, vol 223, number 1-2, pp 79-97.

19) Sims, K.W.W., J. Blichert-Toft, D.J. Fornari, M.R. Perfit, S.J. Goldstein, P. Johnson, D.J. DePaolo, and P. Michaels (2003). Aberrant Youth: Chemical and isotopic constraints on the young off-axis lavas of the East Pacific Rise. Geochemistry, Geophysics, and Geosystems, vol 4, number 10, p 8621,doi:10.1029/2002GC000443.

18) Reagan, M.K., K.W.W. Sims, J. Enrich, R.B. Thomas, H. Cheng, R.L. Edwards, G.D. Layne, and L.A. Ball (2003). Old rhyolite progeny from young mafic parents in North American continental arcs. Journal of Petrology, vol 44, number 9, pp 1703-1726.

17) Bourdon, B. and K.W.W. Sims (2003). U-series constraints on intraplate magmatism. In Uranium Series Geochemistry, eds. B. Bourdon, G.M. Henderson, C.C. Lundstrom and S.P. Turner; Reviews in Mineralogy and Geochemistry, vol 52, pp 215-253.

16) Cooper, K., S.J. Goldstein, K.W.W. Sims, and M.T. Murrell (2003). Uranium-Series Chronology of Gorda Ridge Volcanism: New evidence from the 1996 Eruption. Earth and Planetary Science Letters, vol 206, number 3, pp 459-475, doi:10.1016/S0012-821X(02)01083-X.

15) Jull, M., P. Kelemen, and K.W.W. Sims (2002). Melt migration and uranium series disequilibria: the combined effect of porous and conduit flow. Geochimimica et Cosmochimica Acta, vol 66, number 23, pp 4133-4148.

14) Sims, K.W.W., S.J. Goldstein, J. Blichert-Toft, M.R. Perfit, P. Kelemen, D.J. Fornari, P. Michael, M.T. Murrell, S.R. Hart, D.J. DePaolo, G.D. Layne, and M. Jull (2002). Chemical and isotopic constraints on the generation and transport of melt beneath the East Pacific Rise. Geochimimica et Cosmochimica Acta, vol 66, number 19, pp 3481-3504, doi:10.1016/S0016-7037(02)00909-2.

13) Choi, M.S., R. François, K.W.W. Sims, M.P. Bacon, S. Legger-Brown, A.P. Fleer, L.A. Ball, D. Schneider and S. Pichat (2001). Rapid determination of 230Th and 231Pa in seawater by Inductively coupledplasma mass spectrometry. Marine Chemistry, vol 76, pp 99-112.

12) Layne, G.D. and K.W.W. Sims (2000). Analysis of 232Th/230Th in volcanic rocks by SecondaryIonization Mass Spectrometry. International Journal of Mass Spectrometry, vol 203, number 1-3, pp 187-198.

11) Hart, S.R., H. Staudigel, A.A.P. Koppers, J. Blusztajn, E.T Baker, R. Workman, M. Jackson, E. Hauri, K.W.W. Sims, D.J. Fornari, A. Saal and S. Lyons (2000). Vailulu'u Undersea Volcano: The New Samoa. Geochemistry, Geophysics, and Geosystems, vol 1, Paper number 2000GC000108.

10) Sims, K.W.W., M.T. Murrell, D.J. DePaolo, W.S. Baldridge, S.J. Goldstein, D. Clague and M. Jull (1999). Porosity of the melting zone and variations in the solid mantle upwelling rate beneath Hawaii: Inferences from 238U-230Th-226Ra and 235U-231Pa disequilibria. Geochimimica et Cosmochimica Acta, vol 63, number 23, pp 4119-4138, doi: 10.1016/S0016-7037(99)00313-0 (invited paper for a Special volume in honor of Claude Allegre).

9) Stracke, A., V.J.M. Salters and K.W.W. Sims (1999). Assessing the role of pyroxenite in the source of Hawaiian basalts: Hf-Nd-Th isotope evidence. Geochemistry, Geophysics, and Geosystems, vol 1, Paper number 1999GC0000013.

8) Sims, K.W.W. and D.J. DePaolo (1997). Inferences about mantle magma sources from incompatible element concentration ratios in oceanic basalts. Geochimica et Cosmochimica Acta, vol 61, number 4, pp 765-784, doi: 10.1016/S0016-7037(96)00372-9.

7) Newsom, H.E., K.W.W. Sims, P.D. Noll, W.L. Jaeger, S.A. Maehr, and T.B. Bassera (1996). The depletion of W in the bulk-silicate Earth: constraints on core formation. Geochimica et Cosmochimica Acta, vol 60, number 7, pp 1155-1169.

6) Sims, K.W.W., D.J. DePaolo, M.T. Murrrell, W.S. Baldridge, S.J. Goldstein, and D. Clague (1995). Mechanisms of magma generation beneath Hawaii and Mid-Ocean ridges: U-Th and Sm-Nd isotopic evidence. Science, vol 267, pp 508-512, doi: 10.1126/science.267.5197.508.

5) Newsom, H.E. and K.W.W. Sims (1991). Core formation during early accretion of the Earth. Science, vol 252, pp 926-933, doi: 10.1126/science.252.5008.926.

4) Sims, K.W.W., and E.S. Gladney (1991). Determination of As, Sb, W and Mo in silicate matrices by epithermal neutron activation and inorganic ion exchange. Analytica Chimica Acta, vol 251, pp 297-303.

3) Sims, K.W.W., H.E. Newsom, and E.S. Gladney (1990). Chemical fractionation during formation of the Earth's core and continental crust: Clues from As, Sb, W and Mo. In Origin of the Earth, J. Jones and H.E. Newsom (eds.) New York : Oxford University Press; Houston, Lunar and Planetary Institute. 1990, ISBN 0-19-506619-7.

2) Sims, K.W.W., E.S. Gladney, C.C. Lundstrom, and N.W. Bower (1988). Elemental concentrations in Japanese silicate rock standards: a comparison with the literature. Geostandards Newsletter, vol 12, pp 379-389.

1) Cohen, A.S., D.S. Ferguson, P.M. Gram, S.L. Hubler, and K.W.W. Sims (1986). The Distribution of Coarse Grained Sediments in Modern Lake Turkana, Kenya: Implications for Clastic Sedimentation Models of Rift Lakes. In Sedimentation in the African Rift Systems, L.E. Frostik (ed.), Geologic Societyof London, Special Publication 23, pp 212-223.


Non-Peer Reviewed Publications and Consulting Reports

   From Ground Water Contracts

Drakos, P., J. Lazarus, J. Riesterer, K.W.W. Sims, and M. Hodgins (2006). Subsurface Stratigraphy, the Effects of Faults on Groundwater Flow, Chemical and Isotopic Constraints on Source-Waters and Connectivity of Basin-Fill Aquifers in the Southern San Luis Basin, New Mexico. Report of the 2006 Ground Water Summit, National Ground Water Association.

Drakos, P., K.W.W Sims, J. Riesterer and J. Lazarus (2006). Source-Waters And Connectivity Of Basin-Fill Aquifers in The San Juan Basin, New Mexico: Constraints from U-series disequilibria, Tritium and Sr, O and H isotopes. Invited, peer reviewed article for Desert Society Guidebooks, San Juan Basin Geology, pp 268-279.

Sims, K.W.W. (2006). Geology of New Mexico, in Rock Climbing New Mexico by Dennis Jackson, Falcon Press Co., Inc, Helena Montana, ISBN 10:00-7627-3132-9.

Sims, K.W.W., and C. Barlow (2005). Various new routes on Huamashraju, The American Alpine Journal, The World's Most Significant Climbs, 79, vol 47, pp 264-265. (Description of the first ascent of the West Face of Huamashraju (5,434 meters)).

Drakos, P., J. Lazarus, J. Riesterer, M. Hodgins and K.W.W. Sims (2005). Structural controls on ground water flow and recharge into the southern San Luis Basin near Taos, NM. USGS field report on San Luis basin Hydrology.

Drakos, P., J. Riesterer, J. Lazarus, and K.W.W. Sims (2003). Evaluation of Pumping Effects at Zuni Salt Lake in the Atarque Sandstone Aquifer from Fence Lake Mine. Unpublished Glorieta Geoscience, Inc. consulting report, 19 p. plus Appendices.

Sims, K.W.W. (1996). Geology of New Mexico and Texas, in Rock Climbing New Mexico and Texas by Dennis Jackson, Falcon Press Co., Inc, Helena Montana, ISBN 1-56044-483-5.


Presented Papers with Published Abstracts

   (* denotes Invited Keynote talks)

65) *Sims, K.W.W. and P.-J. Gauthier (2007). From Source to surface: U-series constraints on the processes and timescales of magma generation, evolution and degassing. International Conference on Evolution, Transfer and Releases of Magmas and Volcanic Gases at Academia Sincia, Taipei, April 2007. INVITED KEYNOTE

64) Gauthier, P.-J, K.W.W. Sims, and S. Moune (2007). Long-lasting degassing activity at basaltic volcanoes: the bearing of U-series isotopes. International Conference on Evolution, Transfer and Releases of Magmas and Volcanic Gases at Academia Sincia, Taipei, April 2007.

63) Sims, K.W.W., B. Peucker-Ehrenbrink, T. Mather, D.M. Pyle, R.S. Martin, P.-J. Gauthier, and A. Aiuppa (2007). Sniffing for Clues to the Dinosaurs' Demise: Measurement of Osmium Isotopes Composition and Platinum Group Element Abundances in Volcanic Emissions. International Conference on Evolution, Transfer and Releases of Magmas and Volcanic Gases at Academia Sincia, Taipei, April 2007.

62) *Sims, K.W.W., L.A. Ball and J. Schweiters (2006). Measurement of Th Isotopes in Volcanic Rocks by Plasma Ionization Multi-Collector Mass Spectrometry. Fall AGU EOS Trans 87 (52) V11E-01. INVITED TALK

61) Pyle, D.M., S.J. Collins, K.W.W. Sims, M.K. Reagan, J.D. Blundy, C. Oppenheimer, and G.Yirgu (2006). Rhyolites From the September 2005 Da'Ure (Dabbahu) Eruption, Afar, Ethiopia. Fall AGU EOS Trans 87 (52) T41B-1560.

60) Garrison, J.M., M.K. Reagan, K.W.W. Sims, and L.C. Patino (2006). Timscales of rhyodacite formation in Central America: U-series disequilibrium and implications for petrogenetic processes in El Salvador and Nicaragua. Fall AGU EOS Trans 87 (52) V41B-1734.

59) Sims, K.W.W., M. Perfit, J. Blichert-Toft, D.J. Fornari, J. Blusztajn, L.A. Ball, and C.L. Waters (2006). Progressive melting of a heterogeneous mantle source beneath 9-10°N. EPR Geochimica et Cosmochimica Acta Supplement, v. 70, iss. 18, p. 592.

58) Ramos, F.C., M.R. Reid, and K.W.W. Sims (2006). Re-evaluating the mantle structure underlying the southwestern US. Geochimica et Cosmochimica Acta Supplement, v. 70, iss. 18, p. 515.

57) Standish, J. J., and K.W.W. Sims (2006). Lava emplacement and crustal architecture within an ultraslow-spreading rift valley. Geochimica et Cosmochimica Acta Supplement, v. 70, iss. 18, p. 611.

56) Turner, S. P., K.W.W. Sims, and M.K. Reagan (2006). A 210Pb-226Ra-230Th-238U study of Klyuchevskoy and Bezymianny volcanoes, Kamchatka. Geochimica et Cosmochimica Acta Supplement, v. 70, iss. 18, p. 661.

55) Elkins L., G.A. Gaetani, and K.W.W. Sims (2006). Mineral/melt partitioning of U and Th during partial melting of garnet pyroxenite. Geochimica et Cosmochimica Acta Supplement, v. 70, iss. 18, p. 159.

54) *Sims, K.W.W. (2006). Timescales of Magmatic Processes from U-series disequilibria. Presented at 2006 IAVCEI, Guangzhou, China. INVITED KEYNOTE

53) Sims, K.W.W., B. Peucker-Ehrenbrink, T. Mather, D.M. Pyle, R. Martin, P.-J. Gauthier, and A. Aiuppa (2005). Sniffing for Clues to the Dinosaurs' Demise: Measurement of Osmium Isotope Compositions and Platinum Group Element Abundances in Volcanic Emissions. Fall AGU EOS Trans 86 (52) V21E-0669.

52) Cooper, K.M., K.W.W. Sims, and J. Eiler (2005). Time scales of assimilation and mixing at Krafla volcano, Icleand. Fall AGU EOS Trans 86 (52) V13B-0539.

51) Homburg, J.M., G.A. Gaetani, and K.W.W. Sims (2005). Experimental Investigation of High-Temperature Iron Isotope Fractionation in the Iron-Iron Sulfide System. Fall AGU EOS Trans 86 (52) V41F-1524.

50) Standish, J.J., K.W.W. Sims, and H.J.B. Dick (2005). Sensitivity of MORB Chemistry and Emplacement to Accretionary Tectonics at Ultraslow-Spreading Rates on the Southwest Indian Ridge. Fall AGU EOS Trans 86 (52) T32A-07.

49) *Sims, K.W.W. and S.R. Hart (2005). Comparison of Th, Pb, Nd and Sr isotopes in oceanic basalts: Implications for mantle heterogeneity and magma genesis. Geochimica et Cosmochimica Acta Supplement, Vol. 69, Issue 10, Supplement 1, Goldschmidt Conference Abstracts 2005, A336 INVITED KEYNOTE

48) Standish, J.J., K.W.W. Sims, and H.J.B. Dick (2005). Producing U-series disequilibria through ultraslow crustal accretion. Geochimica et Cosmochimica Acta Supplement, Vol. 69, Issue 10, Supplement 1, Goldschmidt Conference Abstracts 2005, p.A337.

47) Standish, J.J., K.W.W. Sims, and H.J.B. Dick (2004). The Influence of Ridge Geometry on Crustal Accretion: Insights From U-series Disequilibria on the SWIR. Eos Trans. AGU, 85(47), Fall Meet. Suppl T12A-06.

46) Sims, K.W.W. and S.R. Hart (2004). Th, Nd, Sr and Pb Isotopes in Samoan Lavas: Implications for Mantle Heterogeneity. Eos Trans. AGU, 85(47), Fall Meet. Suppl V53A-0608.

45) Cooper, K.M., J.M. Eiler, C.H. Langmuir, and K.W.W. Sims (2003). Global similarity in oxygenisotope composition of MORB. Eos Trans. AGU, 84(46), Fall Meet. Suppl. V52D-07.

44) Perfit, M.R., J. McLennan, D.J. Fornari, W.I. Ridley, and K.W.W. Sims (2003). MORB Petrogenesis and Crustal Development of the East Pacific Rise (EPR) at the R2K ISS 9°-10°N. Eos Trans. AGU, 84(46), Fall Meet. Suppl.: B12A-0746.

43) Sims, K.W.W., N. Mattielli, T. Elliott, P. Kelemen, D.J. Depaolo, D. Mertz, and C. Devey (2003). 238U and 230Th excesses in Kolbeinsey Ridge Basalts: Implications for Melt Generation and Transport Beneath a Slow Spreading Ridge. Eos Trans. AGU, 84(46), Fall Meet. Suppl. V52F-06.

42) * Sims, K.W.W., J. Blichert-Toft, D.J. Fornari, M.R. Perfit, S.J. Goldstein, D.J. DePaolo, S.R. Hart, and M.T. Murrell (2003). Aberrant youth: chemical and isotopic constraints on the origin of off-axis lavas from the EPR, 9°-10° N. (solicited) AGU/EUG Nice France, Geophysical research Abstract, Vol 5, 08220. INVITED KEYNOTE

41) Cooper, K.M., S.J. Goldstein, K.W.W. Sims, and M.T. Murrell (2003). Uranium-series chronology of Gorda Ridge volcanism: new evidence from the 1996 eruption. AGU/EUG Nice France, Geophysical research Abstract, Vol 5, 07587.

40) Perfit, M. R., D.J. Fornari, W.I. Ridley, J.C. Maclennan, and K.W.W. Sims (2003). High resolution geochemical and volcanological investigations of the East Pacific Rise (EPR) at 9°-10° N. AGU/EUG Nice France, Geophysical research Abstract, Vol 5, 07269.

39) Ball, L.A., K.W.W. Sims, J. Schweiters, and S. Weyers (2002). Measurement of 232Th/230Th in volcanic rocks by PIMMS, using the ThermoFinnigan Neptune. Goldschmidt Conference Abstracts, Davos, Switzerland 2002 A47.

38) Jull, M., P. Kelemen, and K.W.W. Sims (2002). Consequences of Diffuse and Channelled Porous Melt Migration on Uranium Series Disequilibria. Goldschmidt Conference Abstracts, Davos, Switzerland A719.

37) *Sims, K.W.W., N. Mattielli, T. Elliott, P. Kelemen, D.J. DePaolo, D. Mertz, and C. Devey (2002). 238U and 230Th excesses in Kolbeinsey Ridge Basalts. Goldschmidt Conference Abstracts, Davos, Switzerland A719. INVITED KEYNOTE

36) Ball, L.A., K.W.W. Sims, S. Weyer, and J. Schwieters (2002). Measurement of 232Th/230Th in volcanic rocks by Plasma Ionization Mass Spectrometry using the ThermoFinnigan Neptune. Presented at Winter Conference on Plasma Mass Spectrometry.

35) Sims, K.W.W., N. Mattielli, T. Elliott, P. Kelemen, D.J. DePaolo, D. Mertz, C. Devey, and M.T. Murrell (2001). 238U and 230Th excesses in Kolbeinsey Ridge Basalts. E.O.S., Eos Trans. AGU, 82(47), Fall Meet. Suppl., Abstract V12A-0952.

34) Reagan, M.K. and K.W.W. Sims (2001). Are melt migration rates through the mantle universally rapid? Eos Trans. AGU, 82(47), Fall Meet. Suppl., Abstract V51E-09.

33) Tepley III, F.J., C.C. Lundstrom, and K.W.W. Sims (2001). U-series Disequilibria in MORB from Transforms and Implications for Mantle Melting. Eos Trans. AGU, 82(47), Fall Meet. Suppl., Abstract V51E-07.

32) Reagan, M.K., and K.W.W. Sims (2001). Old basalt parents and young rhyolite progeny in continental arcs. Geol. Soc. Am. Penrose Conf. Abs.31) Reagan, M.K., E. Gilpin, R. Thomas, and K.W.W. Sims (2000). Time-Scales for Generating Rhyolites and Associated Magmas in the Cascade Arc. EOS, v. 81, p. f1248.

30) *Sims, K.W.W., J. Blichert-Toft and M.R. Perfit (2000). Melting beneath the East Pacific Rise, 9-10° N: Implications from Combined Nd-Hf-Sr-Th Isotopic Measurements. Invited keynote talk, presented at Goldschmidt 2000 Oxford, UK. Abstract in Journal of Conference Abstracts Volume 5(2), 930, Cambridge Publications. INVITED KEYNOTE

29) Pichat, S., F. Albarede, K.W.W. Sims, L. Beaufort, and R. François (2000). A High Resolution (231 Pa/230 Th) Profile from the Western Pacific Warm Pool over the Last Five Isotopic Stages. Presented at Goldschmidt 2000 Oxford, UK., Abstract in Journal of Conference Abstracts Volume 5(2), 796, Cambridge Publications.

28) Saal, A., M. Kurz, S.R. Hart, J. Blusztajn, G.D. Layne, K. W. W. Sims and D. Geist (2000). U Series Isotopic Variability in Galapagos Lavas, Evidence of a Mildly Buoyant Plume. Presented at Goldschmidt 2000 Oxford, UK., Abstract in Journal of Conference Abstracts Volume 5(2), 866, Cambridge Publications.

27) Michael, P., K.W.W. Sims, D.J. Fornari and M.R. Perfit (1999). Excess Radium-226 in Mid-Ocean Ridge Basalts is Not Caused by Assimilation. Presented at American Geophysical Union Meeting, San Francisco CA. Abstract in E.O.S. (Trans. Amer. Geophys. Union), V11E.

26) Sims, K.W.W., M. Jull, and P. Kelemen (1999). U-series disequilibria and melt transport in the mantle beneath mid-ocean ridges. Presented at American Geophysical Union Meeting, San Francisco CA. Abstract in E.O.S. (Trans. Amer. Geophys. Union), V22D.

25) Sims, K.W.W. and M. Jull, (1999). U-series disequilibria and mantle melting. Presented at American Geophysical Union Meeting, Boston, Massachusetts. Abstract in E.O.S. (Trans. Amer. Geophys. Union), page S327.

24) Sims, K.W.W., S.J. Goldstein, M.R. Perfit, D.J. Fornari, S.R. Hart, M.C. Smith and M.T. Murrell (1998). Spatial and temporal variations in mid-ocean ridge basalt geochemistry along the 9-10°East Pacific Rise crest. Presented at 8th V.M. Goldschmidt Conference, Toulouse, France. Abstract in Mineralogical Magazine, 62A, page 1413.

23) Layne, G.D., N. Shimizu, and K.W.W. Sims (1998). New Applications of In Situ and Hybrid Isotopic Analysis for the Cameca IMS 1270. Presented at American Geophysical Union Meeting, San Francisco, California. Abstract in E.O.S. (Trans. Amer. Geophys. Union), page F955.

22) François, R., M.P. Bacon, K.W.W. Sims, A.P. Fleer, and D. Schneider (1997). Deep Water ventilaation ages across the deep Western Boundary Current in the North Atlantic based on 231Pa and 230Th seawater profiles. Presented at American Geophysical Union Meeting, San Francisco, California. Abstract in E.O.S. (Trans. Amer. Geophys. Union), page F382.

21) Sims, K.W.W., S.J. Goldstein, D.J. Fornari, M.T. Murrell, M.R. Perfit and S.R. Hart (1997). Useries analyses of young lavas from 9-10°N East Pacific Rise: Constraints on magma transport and storage times beneath the ridge axis. Presented at American Geophysical Union Meeting, San Francisco, California. Abstract in E.O.S. (Trans. Amer. Geophys. Union), page F792.

20) Sims, K.W.W., S.J. Goldstein, M.R. Perfit, D.J. Fornari, S.R. Hart, M.C. Smith and M.T. Murrell (1997). Spatial and temporal variations in mid-ocean ridge basalt geochemistry along the East Pacific Rise crest: U-series disequilibria, radiogenic isotopes and elemental variability in a closely spaced, twodimensional grid of samples from 9°48'-9°52'N EPR. Presented at 7th V.M. Goldschmidt Conference, Tucson, AZ, USA. Abstract in LPI Contribution No. 921, Lunar and Planetary Institute, Houston, p. 194.

19) *Sims, K.W.W., D.J. DePaolo, M.T. Murrell, W.S. Baldridge, and S.J. Goldstein (1996). Porosity of the melt zone and solid mantle upwelling rates beneath Hawaii: Inferences from 238U-230Th-226Ra and 235U-231Pa Disequilibria. Invited Talk presented at American Geophysical Union Meeting, San Francisco, California. Abstract in E.O.S. (Trans. Amer. Geophys. Union), page 797. INVITED TALK

18) Sims, K.W.W., D.J. DePaolo, M.T. Murrell, W.S. Baldridge, and S.J. Goldstein (1996). Melting conditions in the Hawaiian plume: Inferences from 238U-230Th-226Ra and 235U-231Pa Disequilibria. Presented at American Geophysical Union Meeting, Baltimore, Maryland. Abstract in E.O.S. (Trans.Amer. Geophys. Union), page 287.

17) Sims, K.W.W., D.J. DePaolo, M.T. Murrell, W.S. Baldridge, and S.J. Goldstein (1996). Porosity of the melt zone beneath Hawaii and mid-ocean ridges: Inferences from 238U-230Th-226Ra and 235U-231Pa Disequilibria. Presented at 6th V.M. Goldschmidt Conference, Heidelberg, Germany. Abstract in J. Conf. Abs. 1, page 577.

16) Sims, K.W.W., E. Sklar and R. Jeanloz (1995). Core formation contemporaneous with planet growth: a dynamic stochastic process. Presented at VM Goldschmidt Conference, State College Pennsylvania. Abstract in Programs and Abstracts, The Geochemical Society, page 75.

15) *Sims, K.W.W. and D.J. DePaolo (1995). Concurrent use of isotopic and incompatible trace- element ratios for understanding mantle evolution and basalt petrogenesis. Invited Talk presented at Hurley Symposium, American Geophysical Union Meeting, Baltimore, Maryland. Abstract in E.O.S. (Trans. Amer. Geophys. Union), page 294. INVITED TALK

14) Murrell, M.T., F. Perry, T. Benjamin, K.W.W. Sims and B. Crowe (1995). 238U-230Th Geochronology of basaltic volcanism at Lathrop Wells and Sleeping Butte, NV. Presented at American Geophysical Union Meeting, Baltimore, Maryland. Abstract in E.O.S. (Trans. Amer. Geophys. Union), page 286.

13) Sims, K.W.W., D.J. DePaolo, M.T. Murrell, W.S. Baldridge, and S.J. Goldstein (1994). Correlated U-Th and Sm-Nd fractionation in mid-ocean ridge and ocean island basalts. Presented VM Goldschmidt Conference, Edinburgh, Scotland. Abstract in American Mineralogical Magazine, 58A, pages 844-845.

12) Sims, K.W.W., D.J. DePaolo, M.T. Murrell, W.S. Baldridge, and S.J. Goldstein (1994). Basalt petrogenesis: A combined approach using U-Th disequilibria and Sm-Nd isotopic systematics. Presented at ICOG-8, Berkeley, California. Abstract in ICOG-8, USGS Circular 1107, page 293.

11) Sims, K.W.W., D.J. DePaolo, M.T. Murrell, and W.S. Baldridge (1994). 238U-230Th disequilibrium in young basalts: implications for eruptive ages, residence times and basalt petrogenesis. Presented at New Mexico Geological Society Meeting. Abstract in NMGS 1994 Annual Spring Meeting Proceedings, page 33.

10) Newsom H.E., P.D. Noll Jr., and K.W.W. Sims (1994). The depletion of W in the Earth's primitive mantle: a stumbling block for high temperature equilibrium core formation? Presented at Lunar and Planetary Science Conf. XXV. Abstract in Proceedings of Lunar and Planetary Science Conf. XXV, pages 96-99.

9) Sims, K.W.W. and H.E. Newsom (1992). Chemical fractionation in the continental crust: Archean crust versus lower crustal xenoliths. Presented at American Geophysical Union Meeting, Montreal, Quebec. Abstract in E.O.S. (Trans. Amer. Geophys. Union), page 323.

8) Sims, K.W.W. and D.J. DePaolo (1991). Reevaluation of Ce/Pb in oceanic basalts: new constraints on mantle sources. Presented at American Geophysical Union Meeting, San Francisco, California. Abstract in E.O.S. (Trans. Amer. Geophys. Union), page 526.

7) Sims, K.W.W. and H.E. Newsom (1989). Accretion and Core Formation in the Earth. Presented at American Geophysical Union Meeting, San Francisco, California. Abstract in E.O.S. (Trans. Amer. Geophys. Union) page 1179.

6) Sims, K.W.W., B.M. Loeffler, T.G. Lindeman, J.B. Noblett, and K. Futa (1989). Mafic inclusions in the Tschicoma Formation, Jemez Volcanic Field: evidence for forced mechanical mixing of two lavas. Presented at Conference on Continental Magmatism, I.A.V.C.E.I., Santa Fe, New Mexico. Abstract in New Mexico Bureau of Mines and Mineral Resources Bulletin 131, page 244.

5) Sims, K.W.W., H.E. Newsom, and E.S. Gladney (1989). Abundances of As, Sb, W and Mo in early Archean and Phanerozoic mantle-derived and continental crustal rocks. Presented at the Workshop on the Archean Mantle, Houston, Texas. Abstract in Workshop on the Archean Mantle, Lunar and Planetary Institute, NASA, Johnson Space Center, Houston, Texas, page 38.

4) Newsom, H.E. and K.W.W. Sims (1989). W, Sb and As depletions in the Pomozdino Eucrite and Angra Dos Reis. Presented at 52nd Meteoritical Society Meeting, Vienna, Austria. Abstract in Meteoritics.

3) Sims, K.W.W., H.E. Newsom, E.S. Gladney, and K. Keil (1988). Abundances of As, Sb, Mo and W in the crust and mantle: implications for terrestrial accretion and core formation through geologic time. Presented at Conference for the Origin of the Earth, Berkeley, California. Abstract in Conference on the Origin of the Earth, Lunar and Planetary Institute, NASA, Johnson Space Center,  Houston, Texas, page 83.

2) Albrecht, A., K.W.W. Sims, and E.S. Gladney (1988). Geochemical variations across a major terrain boundary in northern Mexico. Presented at American Geophysical Union Meeting, San Francisco, California. Abstract in E.O.S. (Trans. Amer. Geophys. Union), page 1493.

1) Sims, K.W.W. and B.M. Loeffler (1986). Inclusions in the Tschicoma Formation (Jemez Volcanic Field): textural evidence supporting origin by magma mixing. Presented at American Geophysical Union Meeting, San Francisco, California. Abstract in E.O.S. (Trans. Amer. Geophys. Union), page 1269.


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