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  • Oxygen Isotopes
  • Future studies on the Carboniferous in China should focus on (1) the correlation between shallow- and deep-water facies and between marine and continental facies, (2) high-resolution astronomical cyclostratigraphy, and (3) paleoenvironment and paleoclimate analysis based on geochemical proxies such as strontium and oxygen isotopes, as well as stomatal indices of fossil plants. (springer.com)
  • seawater
  • Scher, HD (2004): Preservation of seawater Sr and Nd isotopes in fossil fish teeth: bad news and good news. (pangaea.de)
  • In this case the postulated enhanced weathering of shelf carbonates during glacial intervals, delivering light Sr isotopes to the ocean may not have been as significant as predicted or else was offset by increased production and preservation of carbonates, driving seawater to heavier δ 88 Sr values. (open.ac.uk)
  • ratio measurements
  • The optimized procedure for the coupled on-line HPIC-ICP-SFMS system allowed non-interfered Sr isotope ratio measurements with no statistically significant differences in precision and accuracy compared to direct nebulization. (rsc.org)
  • parameters
  • In a preliminary study, the effect of various data acquisition parameters on the isotope ratio precision was systematically studied, permitting optimum conditions to be selected. (ugent.be)
  • environments
  • Released from rocks in the weathering process, strontium permeates individual components of inanimate and animate environments, and then finds its way, together with food, to the human body. (sciendo.com)
  • data
  • This paper reports strontium (87Sr/86Sr) and oxygen (δ18O) isotope data for tooth enamel sampled from a further 40 individuals from more recent excavations on the same site. (nerc.ac.uk)
  • human
  • We can answer these questions by looking at the shape of longbones, and by studying the isotopes and the DNA that can be found in human bones. (coursera.org)
  • Values obtained by analysing human skeletons referenced against the range of environmental isotope variability enable researchers to trace back the location inhabited by the individual or group. (sciendo.com)