Figure 12: PALAEOZOIC ISOTOPES. Del 13C after Lindh and others (1981); del 34S after Saltzman and others (1982) and Lindh (1983); 87Sr/86Sr after Burke and others (1982); and Carbon/Sulfur after Raiswell and Berner (1986). Silurian conditions emphasized by vertical bar.
Silurian Isotopes