This data set contains results from a study of the triple isotope composition
of atmospheric O2, obtained by analysis of the GISP2 and Siple Dome ice cores.
Results are expressed as D17O, where
Atmospheric concentrations of CH4 were extracted from the 2,184-m ice core from
Byrd Station (Antarctica) for the period 550 - 51,100 BP in 1967-68 by
the U.S. Cold regions Research and Engineering ...