Stable Isotope Papers from WiscSIMS on Paleoclimate Proxies


Kozdon R, Ushikubo T, Kita NT, Spicuzza MJ and Valley JW (2009). Intratest oxygen isotope variability in the planktonic foraminifer N. pachyderma: Real vs. apparent vital effects by ion microprobe. Chemical Geology 258(3-4): 327-337. doi:10.1016/j.chemgeo.2008.10.032 - View PDF

Kozdon R, Kelly DC, Kita NT, Fournelle JH and Valley JW (2011). Planktonic foraminiferal oxygen isotope analysis by ion microprobe technique suggests warm tropical sea surface temperatures during the Early Paleogene. Paleoceanography 26(3), PA3206, doi: 10.1029/2010PA002056 - View PDF

Vetter L, Kozdon R, Mora CI, Eggins SM, Valley JW, Hönisch B and Spero HJ (2013). Micron-scale intrashell oxygen isotope variation in cultured planktic foraminifers. Geochim. Cosmochim. Acta, in press. doi:10.1016/j.gca.2012.12.046


Orland IJ, Bar-Matthews M, Kita NT, Ayalon A, Matthews A and Valley JW (2009). Climate deterioration in the Eastern Mediterranean as revealed by ion microprobe analysis of a speleothem that grew from 2.2 to 0.9 ka in Soreq Cave, Israel. Quaternary Research 71(1): 27-35. doi:10.1016/j.yqres.2008.08.005 - View PDF

Orland IJ, Bar-Matthews M, Ayalon A, Matthews A, Kozdon R, Ushikubo T and Valley JW (2012). Seasonal resolution of Eastern Mediterranean climate change since 34 ka from a Soreq Cave speleothem. Geochim. Cosmochim. Acta 89, 240-255.
doi:10.1016/j.gca.2012.04.035 - View PDF


Matta ME, Orland IJ, Ushikubo T, Helser TE, Black BA, and Valley JW (2013) Otolith Oxygen Isotopes Measured by High-Precision Secondary Ion Mass Spectrometry Reflect Life History of a Yellowfin Sole (Limanda Aspera). Rapid Commun. Mass Spectrom., in press.

Weidel BC, Ushikubo T, Carpenter SR, Kita NT, Cole JJ, Kitchell JF, Pace ML and Valley JW (2007). Diary of a bluegill (Lepomis macrochirus): daily delta C-13 and delta O-18 records in otoliths by ion microprobe. Canadian Journal of Fisheries and Aquatic Sciences 64(12): 1641-1645. doi:10.1139/F07-157 - View PDF

Organic Matter

Dattagupta S, Schaperdoth I, Montanari A, Mariani S, Kita N, Valley JW and Macalady J (2009). A novel symbiosis between chemoautotrophic bacteria and a freshwater cave amphipod. ISME J. 3(8): 935-943. doi:10.1038/ismej.2009.34 - View PDF

Williford KH, Ushikubo T, Schopf JW, Lepot K, Kitajima K and Valley JW (2013). Preservation and detection of microstructural and taxonomic correlations in the carbon isotopic compositions of individual Precambrian microfossils. Geochim. Cosmochim. Acta 104, 165-182. doi:10.1016/j.gca.2012.11.005 - View PDF


Cunningham LC, Page FZ, Simonson BM, Kozdon R and Valley JW (2012). Ion microprobe analyses of δ18O in early quartz cements from 1.9 Ga granular iron formations (GIFs): A pilot study. Precambrian Research 214-215, 258-268. doi:10.1016/j.precamres.2012.01.016 - View PDF

Harwood J, Aplin AC, Fialips CI, Iliffe JE, Kozdon R, Ushikubo T and Valley JW (2013). Quartz cementation history of sandstones revealed by high resolution SIMS oxygen isotope analysis. J. Sedimentary Research. In press

Kelly JL, Fu B, Kita NT and Valley JW (2007). Optically continuous silcrete quartz cements of the St. Peter Sandstone: High precision oxygen isotope analysis by ion microprobe. Geochimica et Cosmochimica Acta 71(15): 3812-3832. doi:10.1016/J.Gca.2007.05.014 - View PDF

Pollington AD, Kozdon R and Valley JW (2011). Evolution of quartz cementation during burial of the Cambrian Mount Simon Sandstone, Illinois Basin: In situ microanalysis of δ18O. Geology 39, 1119-1122. doi:10.1130/G32195.1 - View PDF

Carbonate Cements

Blank JG, Green SJ, Blake D, Valley JW, Kita NT, Treiman A and Dobson PF (2009). An alkaline spring system within the Del Puerto Ophiolite (California, USA): A Mars analog site. Planetary and Space Science 57(5-6): 533-540. doi:10.1016/j.pss.2008.11.018 - View PDF

Lithium Isotopes

Ushikubo T, Kita NT, Cavosie AJ, Wilde SA, Rudnick RL and Valley JW (2008). Lithium in Jack Hills zircons: Evidence for extensive weathering of Earth's earliest crust. Earth and Planetary Science Letters 272(3-4): 666-676. doi:10.1016/j.epsl.2008.05.032 - View PDF

Silicon Isotopes

Heck PR, Huberty JM, Kita NT, Ushikubo T, Kozdon R and Valley JW (2011). SIMS analyses of silicon and oxygen isotope ratios for quartz from Archean and Paleoproterozoic banded iron formations. Geochim. Cosmochim. Acta 75, 5879-5891. doi:10.1016/j.gca.2011.07.023 - View PDF

Sulfur Isotopes

Williford KH, Kranendonk MJV, Ushikubo T, Kozdon R and Valley JW (2011). Constraining atmospheric oxygen and seawater sulfate concentrations during Paleoproterozoic glaciation: in situ sulfur three-isotope microanalysis of pyrite from the Turee Creek Group, Western Australia. Geochim. Cosmochim. Acta 75, 5686-5705. doi:10.1016/j.gca.2011.07.010 - View PDF

SIMS Technique

Huberty JM, Kita NT, Kozdon R, Heck PR, Fournelle JH, Spicuzza MJ, Xu H and Valley JW (2010). Crystal orientation effects in d18O for magnetite and hematite by SIMS. Chemical Geology 276, 269-283. doi:10.1016/j.chemgeo.2010.06.012 - View PDF

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. Surface and Interface Analysis 43, 427-431. doi:10.1002/sia.3424 - View PDF

Kita NT, Ushikubo T, Fu B and Valley JW (2009). High precision SIMS oxygen isotope analysis and the effect of sample topography. Chemical Geology 264(1-4): 43-57.doi:10.1016/j.chemgeo.2009.02.012 - View PDF

Kozdon R, Kita NT, Huberty JM, Fournelle JH, Johnson CA and Valley JW (2010). In situ sulfur isotope analysis of sulfide minerals by SIMS: Precision and accuracy, with application to thermometry of 3.5 Ga Pilbara cherts. Chemical Geology 275, 243-253. View PDF

Page FZ, Ushikubo T, Kita NT, Riciputi LR and Valley JW (2007). High-precision oxygen isotope analysis of picogram samples reveals 2 mu m gradients and slow diffusion in zircon. American Mineralogist 92(10): 1772-1775. doi:10.2138/Am.2007.2697 - View PDF

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 (SIMS Proceedings) 45, 553-556. doi:10.1002/sia.5061 - View PDF

Valley JW and Kita N (2009). In situ Oxygen Isotope Geochemistry by Ion Microprobe. Mineralogical Association of Canada Short Course 41, Toronto, May 2009: 19-63. - View PDF

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