Now showing items 1071-1073 of 1073

    • XANES evidence for sulphur speciation in Mn-, Ni- and W-bearing silicate melts 

      Evans, K. A.; St O’Neill, H.; Mavrogenes, J. A.; Keller, Nicole S.; Jang, L-Y.; Lee, J-F. (2009-08-14)
      S K edge XANES and Mn, W and Ni XANES and EXAFS spectra of silicate glasses synthesised at 1400° C and 1 bar with compositions in the CaO-MgO-Al2O3-SiO2-S plus MnO, NiO, or WO3 systems were used to investigate sulphur ...
    • Young off-axis volcanism along the ultraslow-spreading Southwest Indian Ridge 

      Standish, Jared J.; Sims, Kenneth W. W. (2010-02-09)
      Mid-ocean ridge crustal accretion occurs continuously at all spreading rates through a combination of magmatic and tectonic processes. Fast to slow spreading ridges are largely built by adding magma to narrowly focused ...
    • Zinc and cadmium in benthic foraminifera as tracers of ocean paleochemistry 

      Marchitto, Thomas M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2000-02)
      Benthic foraminiferal δ13C, Cd/Ca, and Ba/Ca are important tools for reconstructing nutrient distributions, and thus ocean circulation, on glacial-interglacial timescales. However, each tracer has its own "artifacts" ...