Fig. 3: Hg concentrations of surface rock and drill-core samples.
From: Mercury fluxes from hydrothermal venting at mid-ocean ridges constrained by measurements
a, Lithology of the TAG mound deposit with the six layers and Hg concentrations of the drill-core samples. The depth of the drill-core samples is given in metres below the seafloor (mbsf). b, Ternary Fe-S-SiO2 diagram with all the rock samples. c, Hg concentrations of the rock samples from the surface, massive sulfide and stockwork layers. The numbers in the horizontal axis indicate the number of the sample as in Extended Data Tables 2 and 3. The black dotted lines indicate the Hg concentration of the oceanic crust30 and the median Hg concentration of hydrothermal sulfides at mid-ocean ridges31. Circles denote surface samples, triangles show samples from the massive sulfide layer and squares show samples from the stockwork zone. Note that the Hg concentrations are shown in a colour scheme.
