Figure 5. Comparison of new Late Ordovician–Silurian
δ34SCAS datasets from this study and
those previously published (Jones and Fike, 2013; Present et al., 2015).
Note the clear overlap in δ34SCASvalues from bulk- and brachiopod-carbonate throughout the Hirnantian.
Approximate chronostratigraphic locations of brachiopod component CAS
samples are marked as yellow stars.