Additional file 4: of Enhanced flux of extraterrestrial 3He across the Permian–Triassic boundary

Figure S4. Correlation coefficients for pairs of the elements/Al ratios determined in this study. Concentrations of the elements were normalized using Al concentrations to compensate the effect of biogenic SiO2-dilution. Correlation coefficients (r) > 0.75 are indicated by colors according to the ranges of values. ∑REE represents total REE concentrations. (PDF 56 kb)