1. isogeochem::GTS2020
    Oxygen isotope stratigraphy from the Geologic Time Scale 2020: macrofossils
  2. isogeochem::LR04
    A Pliocene-Pleistocene benthic foraminifera d18O stack
  3. isogeochem::devilshole
    Devils Hole carbonate d18O time series
  4. isogeochem::meteoric_water
    Oxygen isotope values for meteoric waters