Extended Data Figure 1 : Elemental and stable-isotope cross-plots for M. subbotinae.

From: Very large release of mostly volcanic carbon during the Palaeocene–Eocene Thermal Maximum

Extended Data Figure 1

a–f, We screened samples for chemical consistency by checking various elemental ratios (Al/Ca, B/Ca and Mg/Ca) as well as measured δ11B and δ13C.