Laguardia xbed

Google Scholar Profile

In Preparation

Brown, S.T., Jemison, N.E. and Druhan, J.L. “Uranium Isotope Fractionation in Mono Lake: Implications for the U isotope paleo-redox proxy” For submission to EPSL

Submitted/In Review

 Brown, S.T., Turchyn, A.V., Bickle, M.J., Alt, J.C., Bedard, J.H., Skulski, T. and DePaolo, D.J. “High Temperature Kinetic Isotope Fractionation of Ca in Epidosites from Sea Floor Hydrothermal Systems” For submission to EPSL

Published Journal Articles:


Joe-Wong, C., Weaver, K., Brown, S.T., and Maher, K.M., "Thermodynamic controls on redox-driven kinetic stable isotope fractionation" Accepted in Geochemical Perspectives Letters.


Brown, S.T., Basu, A., Ding, X., Christensen, J.N., and DePaolo, D.J. "Uranium Isotope Fractionation by Abiotic Reductive Precipitation" PNAS August 16, 2018. 201805234; published ahead of print August 16, 2018.

Schilling, K., Brown, S.T., and Lammers, L.N. (2018) "Evidence for non-classical calcium phosphate mineralization from Ca isotopes", Geochimica Et Cosmochimica Acta.

Christensen, J. N., Dafflon, B., Shiel, A. E., Tokunaga, T. K., Wan, J., Faybishenko, B., Brown, S.T., ... & Hubbard, S. S. (2018). Using strontium isotopes to evaluate the spatial variation of groundwater recharge. Science of The Total Environment, 637, 672-685.

Christensen, J. N., Qin, L., Brown, S. T., & DePaolo, D. J. (2018). Potassium and calcium isotopic fractionation by plants (soybean [Glycine max], rice [Oryza sativa], and wheat [Triticum aestivum]). ACS Earth and Space Chemistry.

Silva-Tamayo, J.C., Lau, K.V., Jost, A.B., Payne, J.L., Wignall, P.B., Newton, R.J., Eisenhauer, A., Depaolo, D.J., Brown, S., Maher, K. and Lehrmann, D.J., 2018. Global perturbation of the marine calcium cycle during the Permian-Triassic transition. Geological Society of America Bulletin.


Antonelli, M.A., Pester, N., Brown S.T., and DePaolo, D.J. (2017). "Effect of Paleoseawater Composition on Hydrothermal Exchange in Mid-Ocean Ridges" Proceedings of the National Academy of Sciences 114 (47), 12413-12418

Lau, K. V., Maher, K., Brown, S. T., Jost, A. B., Altıner, D., DePaolo, D. J., ... & Silva-Tamayo, J. C. (2017). The influence of seawater carbonate chemistry, mineralogy, and diagenesis on calcium isotope variations in Lower-Middle Triassic carbonate rocksChemical Geology.

Yogodzinski, G. M., Kelemen, P. B., Hoernle, K., Brown, S. T., Bindeman, I., Vervoort, J. D., ... & Werner, R. (2017). Sr and O isotopes in western Aleutian seafloor lavas: Implications for the source of fluids and trace element character of arc volcanic rocks. Earth and Planetary Science Letters475, 169-180.

Jost, A. B., Bachan, A., van de Schootbrugge, B., Brown, S. T., DePaolo, D. J., & Payne, J. L. (2017). Additive effects of acidification and mineralogy on calcium isotopes in Triassic/Jurassic boundary limestones. Geochemistry, Geophysics, Geosystems.


Brown, S. T., Basu, A., Christensen, J. N., Reimus, P., Heikoop, J., Simmons, A., et al. (2016). Isotopic evidence for reductive immobilization of uranium across a roll-front mineral deposit. Environmental Science & Technology, 50(12), 6189–6198.

Basu, A., Schilling, K., Brown, S. T., Johnson, T. M., Christensen, J. N., Hartmann, M., et al. (2016). Se Isotopes as Groundwater Redox Indicators: Detecting Natural Attenuation of Se at an in Situ Recovery U Mine. Environmental Science & Technology, 50(20), 10833–10842.


Basu, A., Brown, S. T., Christensen, J. N., DePaolo, D. J., Reimus, P. W., Heikoop, J. M., et al. (2015). Isotopic and geochemical tracers for U (VI) reduction and U mobility at an in situ recovery U mine. Environmental Science & Technology, 49(10), 5939–5947.

Christensen, J. N., Weiss-Penzias, P., Fine, R., McDade, C. E., Trzepla, K., Brown, S. T., & Gustin, M. S. (2015). Unraveling the sources of ground level ozone in the Intermountain Western United States using Pb isotopes. Science of the Total Environment, 530, 519–525.

Yogodzinski, G. M., Brown, S. T., Kelemen, P. B., Vervoort, J. D., Portnyagin, M., Sims, K. W., et al. (2015). The role of subducted basalt in the source of island arc magmas: evidence from seafloor lavas of the western Aleutians. Journal of Petrology, 56(3), 441–492.


Jost, A. B., Mundil, R., He, B., Brown, S. T., Altiner, D., Sun, Y., et al. (2014). Constraining the cause of the end-Guadalupian extinction with coupled records of carbon and calcium isotopes. Earth and Planetary Science Letters, 396, 201–212.

Melin, A. D., Crowley, B. E., Brown, S. T., Wheatley, P. V., Moritz, G. L., Yu, Y., Tuh, F., et al. (2014). Technical Note: Calcium and carbon stable isotope ratios as paleodietary indicators. American Journal of Physical Anthropology, 154(4), 633–643.

WoldeGabriel, G., Boukhalfa, H., Ware, S. D., Cheshire, M., Reimus, P., Heikoop, J., et al. (2014). Characterization of cores from an in-situ recovery mined uranium deposit in Wyoming: Implications for post-mining restoration. Chemical Geology, 390, 32–45.


Brown, S. T., Kennedy, B. M., DePaolo, D. J., Hurwitz, S., & Evans, W. C. (2013). Ca, Sr, O and D isotope approach to defining the chemical evolution of hydrothermal fluids: Example from Long Valley, CA, USA. Geochimica Et Cosmochimica Acta, 122, 209–225.

Evans, W. C., Hurwitz, S., Bergfeld, D., Lewicki, J., Huebner, M. A., Williams, C. F., & Brown, S. T. (2013). Water-rock interaction in the Long Valley Caldera (USA). Procedia Earth and Planetary Science, 7, 252–255.

Turchyn, A. V., Alt, J. C., Brown, S. T., DePaolo, D. J., Coggon, R. M., Chi, G., et al. (2013). Reconstructing the oxygen isotope composition of late Cambrian and Cretaceous hydrothermal vent fluid. Geochimica Et Cosmochimica Acta, 123, 440–458.


Hinojosa, J. L., Brown, S. T., Chen, J., DePaolo, D. J., Paytan, A., Shen, S.-Z., & Payne, J. L. (2012). Evidence for end-Permian ocean acidification from calcium isotopes in biogenic apatite. Geology, 40(8), 743–746.

Han, R., Qin, L., Brown, S. T., Christensen, J. N., & Beller, H. R. (2012). Differential isotopic fractionation during Cr (VI) reduction by an aquifer-derived bacterium under aerobic versus denitrifying conditions. Applied and Environmental Microbiology, 78(7), 2462–2464.

Ewing, S. A., Christensen, J. N., Brown, S. T., Vancuren, R. A., Cliff, S. S., & DePaolo, D. J. (2010). Pb isotopes as an indicator of the Asian contribution to particulate air pollution in urban California. Environmental Science & Technology, 44(23), 8911–8916.

Yogodzinski, G. M., Vervoort, J. D., Brown, S. T., & Gerseny, M. (2010). Subduction controls of Hf and Nd isotopes in lavas of the Aleutian island arc. Earth and Planetary Science Letters, 300(3), 226–238.

Faybishenko, B., Hazen, T. C., Long, P. E., Brodie, E. L., Conrad, M. E., Hubbard, S. S., et al. (2008). In situ long-term reductive bioimmobilization of Cr (VI) in groundwater using hydrogen release compound. Environmental Science & Technology, 42(22), 8478–8485.

Published Book Chapters:

Druhan, J. L., Brown, S. T., & Huber, C. (2015). Isotopic Gradients Across Fluid–Mineral Boundaries. Reviews in Mineralogy and Geochemistry, 80, 355–391. (Open Access)

Nielsen, L. C., Druhan, J. L., Yang, W., Brown, S. T., & DePaolo, D. J. (2012). Calcium isotopes as tracers of biogeochemical processes. In M. Baskaran (Ed.), Handbook of Environmental Isotope Geochemistry (pp. 105–124). Springer Berlin Heidelberg.