Fig. 7: Mercury host phase identification using TOC, TS, Al, and TOC-TS relationships.
From: Carbon isotope perturbations are not primarily driven by volcanism during the Late Paleozoic Ice Age
a Cross plot of mercury Hg versus Total organic carbon (TOC). b Cross plot of mercury Hg versus Total sulfur (TS). c Cross plot of mercury Hg versus aluminum (Al). d TOC-TS. In (d), the thresholds of TS/TOC = 0.35 and TS = 1.0% separate most samples with a dominant organic Hg host (faint yellow field) from those with a dominant sulfide Hg host (gray field) (thresholds and base map from ref. 54).
