New Techniques for Stable Isotope
Analysis of Ultra-small Samples

Zircons Are Forever  |  The Earliest Piece of the Earth  |  A Cool Early Earth  |  UW-Madison Stable Isotope Lab  |  UW-Madison Geoscience

Nasdala L, Corfu F,Schoene B, Tapster SR, Wall CJ, Schmitz MD,Ovtcharova M, Schaltegger U, Kennedy AK, Kronz A, Reiners P, Yang Y-H, Wu F-Y, Gain SEM, Griffin WL, Szymanowski D, Chanmuang C, Enge M, Valley JW, Spicuzza MJ, Wanthanachaisaeng B and Giester G (2018)  GZ7 and GZ8 – two Zircon Reference Materials for SIMS U–Pb Geochronology. Geostd. and Geoanalytical Res.  doi: 10.1111/ggr.12239

Ishida A, Kitajima K, Williford KH, Kakegawa T, Valley JW (2018)  Simultaneous in situ analysis of carbon and nitrogen isotope ratios in the organic matter by secondary ion mass spectrometry. Geostandards and Geoanalytical Research, DOI: 10.1111/ggr.12209

Saxey DW, Moser DE, Piazolo S, Reddy SM, ValleyJW (2018) Atomic worlds: current state and future of atom probe tomography in geoscience. Scripta Materialia 148: 115-121,

Blum TB, Reinhard DA, Chen Y, Prosa TJ, Larson DJ, Valley JW (2018)  Uncertainty and Sensitivity Analysis for Spatial and Spectral Processing of Pb Isotopes in Zircon by Atom Probe Tomography. In: Microstructural Geochronology: Planetary Records Down to Atom Scale, Eds: D Moser, F Corfu, J Darling, S Reddy and K Tait.  AGU Geophysical Monograph 232: 327-350.

Blum TB, Darling JR, Kelly TF, Larson DJ, Moser DE, Perez-Huerta A, Prosa TJ, Reddy SM, Reinhard DA, Saxley DW, Ulfig RM, Valley JW (2018)  Best Practices for Reporting Atom Probe Analysis of Geological Materials. In: Microstructural Geochronology: Planetary Records Down to Atom Scale, Eds: D Moser, F Corfu, J Darling, S Reddy, and K Tait. AGU Geophysical Monograph 232: 369-373.

Śliwiński MG, Kitajima K, Spicuzza MJ, Orland IJ,Ishida A, Fournelle JH, Valley JW (2017)  SIMS bias on isotope ratios in Ca-Mg-Fe carbonates (Part III): δ18O and δ13C matrix effects along the magnesite-siderite solid-solution series. Geostandards and Geoanalytical Research. 42: 49-76. doi:10:1111/ggr.12194

Nasdala, L., Corfu, F., Valley, J.W., Spicuzza, M.J., Wu, F.-Y., Li, Q.-L., Yang, Y.-H., Fisher, C., Münker, C., Kennedy, A.K., Reiners, P.W., Kronz, A., Wiedenbeck, M., Wirth, R., Chanmuang, C., Zeug, M., Váczi, T., Norberg, N., Häger, T., Kröner, A. & Hofmeister, W. (2016)  Zircon M127 – a homogeneous reference material for SIMS U–Pb geochronology combined with Hf-, O-, and potentially Li-isotope analysis. Geostandards and Geoanalytical Research. 40: 457-475. doi: 10.1111/ggr.12123

Kita NT, Sobol PE, Kern JR, Lord NE, and Valley JW (2015)  UV light microscope: Improvements in optical imaging for a Secondary Ion Mass Spectrometer. Journal of Analytical Atomic Spectrometry, DOI: 10.1039/C4JA00349G, 30 (5) 1207-1213..

Valley JW, Reinhard DA, Cavosie AJ, Ushikubo T, Lawrence DF, Larson DJ, Kelly TF, Snoeyenbos D, Strickland A (2015)  Nano- and Micro-geochronology in Hadean and Archean Zircons by Atom-Probe Tomography and SIMS: New Tools for Old Minerals. Am. Mineral, 100: 1355-1377.

Ushikubo T, Williford KH, Farquhar J, Johnston D, Valley JW (2014)  In situ sulfur four-isotope analysis of detrital pyrite from the Paleoproterozoic Turee Creek Group, Western Australia. Chem. Geol. 383: 86-99.

Valley JW, Cavosie AJ, Ushikubo T, Reinhard DA, Lawrence DF, Larson DJ, Clifton PH, Kelly TF, Wilde SA, Moser DE, Spicuzza MJ (2014)  Hadean age for a post-magma-ocean zircon confirmed by atom-probe tomography. Nature Geosci 7: 219-223.


Peres P, Kita NT, Valley JW, Fernandes F, and Schuhmacher M (2013)  New Sample Holder Geometry for High Precision Isotope Analyses. Surface and Interface Analysis 45: 553-556. (SIMS Proceedings)DOI 10.1002/sia.5061.

Kita NT, Huberty JM, Kozdon R, Beard BL, and Valley JW (2011)  High precision SIMS oxygen, sulfur and iron stable isotope analyses of geological materials: Accuracy, surface topography and crystal orientation.SIMS XVII Proceedings, Surface and Interface Analysis, v 43: 427-431,    DOI 10.1002/sia.3424.

Huberty JM, Kita NT, Kozdon R, Heck PR, Fournelle JH, Spicuzza MJ, Xu H, Valley JW (2010)  Crystal Orientation Effects on Instrumental Bias of δ18O in Magnetite by SIMS, Chem. Geol. 276: 269-283. doi:10.1016/j.chemgeo.2010.06.012.

Kozdon R, Kita NT, Huberty JM, Fournelle JH, Valley JW (2010)  In situ sulfur isotope analysis of sulfide minerals by SIMS: Precision and Accuracy. Chem. Geol., doi:10.1016/j.chemgeo.2010.05.015,  275: 243-253.

Page, F.Z., Kita, N.T., and Valley, J.W. (2010)  Ion microprobe analysis of oxygen isotopes in garnets of complex chemistry. Chem. Geol.,, 270: 9-19.

Kita NT, Takayuki Ushikubo, Bin Fu and John W. Valley (2009)  High Precision SIMS Oxygen Isotope Analyses and the Effect of Sample Topography, Chemical Geology, doi:10.1016/j.chemgeo.2009.02.012. 264: 43-57.

Valley JW and Kita NT (2009)   In situ Oxygen Isotope Geochemistry by Ion Microprobe, In: Fayek M. (ed) MAC Short Course: Secondary Ion Mass Spectrometry in the Earth Sciences, v 41, 19-63.

Page F. Zeb, Ushikubo, Taka, Kita, Noriko T, Riciputi, Lee R., Valley, John W. (2007) High precision oxygen isotope analysis of picogram samples reveals 2-mm gradients and slow diffusion in zircon. American. Mineralogist. 92:1772-1775.

Spicuzza, Michael J., Day James M.D., Taylor, Lawrence A., Valley, John W. (2007)  Oxygen Isotope constraints on the origin and differentiation of the Moon. Earth Planetary Science Letters 253:254-265.

Kita, N.T., Ikeda, Y., Togashi, S., Liu, Y.Z., Morishita, Y. and Weisberg, M.K. (2004)  Origin of ureilites inferred from a SIMS oxygen isotopic and trace element study of clasts in the Dar al Gani 319 polymict ureilite. Geochim. Cosmochim. Acta. 68, 4213-4235. View pdf

Valley, J.W., Graham, Colin M., Harte, Ben, Eiler, John M., and Kinny, Peter D. (1998) Ion Microprobe Analysis of Oxygen, Carbon, and Hydrogen Isotope ratios. In: Applications of Microanalytical Techniques to Understanding Mineralizing Processes, McKibben, M.A., Shanks,  W.C., III, and Ridley, W.I. (eds.). S.E.G. Review in Economic Geology, v. 7, p. 73-97.

Eiler, John M., Graham, Colin, Valley, John W. (1997) SIMS analysis of oxygen isotopes: matrix effects in complex minerals and glasses. Chemical Geology, v. 138, pp. 221-244.
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Valley, John W. and Graham, Colin, M. (1991) Ion microprobe analysis of oxygen isotope ratios in granulite facies magnetites: diffusive exchange as a guide to cooling history. Contributions to Mineralogy and Petrology, v. 109, p. 38-52.

Valley, John W., Kitchen, Nami, Kohn, Matthew J., Niendorf, Christopher R., and Spicizza, Michael J. (1995) UWG-2, a garnet standard for oxygen isotope ratios: Strategies for high precision and accuracy with laser heating. Geochimica et Cosmochimica Acta, v. 59, n. 24, p. 5523-5531.

Spicuzza, M.J., Valley, J.W., Kohn, M.J., Girard, J.P. and Fouillac, A.M. (1998) The rapid heating, defocused beam technique: a CO2-laser-based method for highly precise and accurate determination of δ18O values of quartz. Chemical Geology, v. 144, p. 195-203.

Crowe, Douglas, E., Valley, John W., and Baker, Kevin L. (1990) Micro-analysis of sulfur-isotope ratios and zonation by laser microprobe. Geochimica et Cosmochimica Acta, v. 54, p. 2075-2092.

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