Fig. 4: Ice-core sulfate concentration and oxygen isotope records for the period 81–72 ka, showing the timing of the Los Chocoyos supereruption. | Communications Earth & Environment

Fig. 4: Ice-core sulfate concentration and oxygen isotope records for the period 81–72 ka, showing the timing of the Los Chocoyos supereruption.

From: Ice core evidence for the Los Chocoyos supereruption disputes millennial-scale climate impact

Fig. 4

a Continuous ice-core SO42− concentration records for Antarctic ice core EDC (blue)84 and Greenland ice core NGRIP (black) (this study; see “Methods and materials” section). LCY identified peak(s) and age of maximum SO42− point indicated (all AICC2012 age model40). Hypothesized YTT eruption candidates T1 and T241,42,43 also labeled to demonstrate the separation of the two events. b Continuous δ18O temperature proxy records for EDC (blue)123 and NGRIP (black)8,81 with measurements made at a time resolution of 10 and 20 years, respectively. Timing of LCY tephra occurrence in each hemisphere shown as dashed vertical lines. c Enlarged section of δ18O records for years between 80 and 79 ka. The timing of LCY in Antarctica (blue) and Greenland (black) shown by the dashed vertical line.

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