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  • sediments
  • Multiple S isotope data from this sapropel suggest that the redox interface where oxidative sulfur cycling occurred was present in the sediments during hemipelagic sedimentation, but moved into the water column during sapropel deposition. (pangaea.de)
  • fluid
  • Oxygen isotope temperatures calculated for chimney calcites are in reasonable agreement with measured vent fluid temperatures and fluid inclusion trapping temperatures. (usgs.gov)
  • carbonate
  • SIMS analysis of delta S-34-SO4 in speleothem carbonate reveals a high resolution archive depicting a regional sulphur emissions inventory for SO2 loading to the atmosphere. (lancs.ac.uk)
  • mass spectrometry
  • SIMS (Secondary Ionisation Mass Spectrometry) is used here to develop records of sulphur isotopic change in speleothems from the Italian and Austrian Alps, where annual laminae are less than 100 mu m thick. (lancs.ac.uk)
  • Processes
  • Significant differences between ð 18 O values of sulphates of atmospheric and biogenic origin, which are created by microbiological sulphur-oxidizing processes, may be useful for interpretation of the processes in the groundwater system. (iwaponline.com)