My research interests focus on the ocean-atmosphere system through deep time. Currently, I am focusing on the evolution of oceanic sulfate during the Phanerozoic and on determining the relative contribution of microbial sulfur disproportionation and the global average fractionation factor associated with pyrite burial using multiple sulfur proxies.
Wu, N., Farquhar, J., Strauss, H., Kim, S. and Canfield, D.E.. (2010) Evaluating the S-isotope fractionation associated with Phanerozoic pyrite burial. Geochimica et Cosmochimica Acta. 74 2053-2071. DOI: 10.1016/j.gca.2009.12.012
Farquhar J., Wu, N., Canfield D. E., Oduro H.. (2010) Connections between sulfur cycle evolution, sulfur isotopes, sediments, and base metal VMS, SEDEX, and MVT deposits. Economic Geology. 105 509-533.
Guo Z.B., Li, Z.Q., Farquhar J., Kaufman A.J., Wu, N., Li, C. Dickerson R.R.. (2010) Identification of sources of atmospheric sulfate by sulfur isotope and SEM measurements. Journal of Geophysical Research. 115 D00K07. DOI: 10.1029/2009JD012893