Browsing by Keyword "sulfur cycle"

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    • Multiple sulfur isotope constraints on the modern sulfur cycle 

      Tostevin, Rosalie; Turchyn, Alexandra V.; Farquhar, James; Johnston, David T; Eldridge, Daniel L.; Bishop, James K.B.; McIlvin, Matthew (Elsevier BV, 2014)
      We present 28 multiple sulfur isotope measurements of seawater sulfate \((δ^{34}S_{SO_{4}} and Δ^{33}S_{SO_4})\) from the modern ocean over a range of water depths and sites along the eastern margin of the Pacific Ocean. ...

    • On the mechanisms of sulfur isotope fractionation during microbial sulfate reduction 

      Leavitt, William Davie (2014-06-06)
      Underlying all applications of sulfur isotope analyses is our understanding of isotope systematics. This dissertation tests some fundamental assumptions and assertions, drawn from equilibrium theory and a diverse body of ...

    • Seasonal fluxes of carbonyl sulfide in a midlatitude forest 

      Commane, Roisin; Meredith, Laura K.; Baker, Ian T.; Berry, Joseph A.; Munger, J. William; Montzka, Stephen A.; Templer, Pamela H.; Juice, Stephanie M.; Zahniser, Mark S.; Wofsy, Steven Charles (Proceedings of the National Academy of Sciences, 2015)
      Carbonyl sulfide (OCS), the most abundant sulfur gas in the atmosphere, has a summer minimum associated with uptake by vegetation and soils, closely correlated with CO2. We report the first direct measurements to our ...

    • Triple oxygen and multiple sulfur isotope constraints on the evolution of the post-Marinoan sulfur cycle 

      Crockford, Peter W.; Cowie, Benjamin; Johnston, David T; Hoffman, Paul; Sugiyama, Ichiko; Pellerin, Andre; Bui, Thi Hao; Hayles, Justin; Halverson, Galen P.; Macdonald, Francis Alexander; Wing, Boswell A. (Elsevier BV, 2016)
      Triple oxygen isotopes within post-Marinoan barites have played an integral role in our understanding of Cryogenian glaciations. Reports of anomalous View the MathML source values within cap carbonate hosted barites however ...