Extended Data Fig. 2: Plots of P/Zr versus Ti/Zr for Kamchatka-Kurile Arc, Izu-Bonin Arc, Lesser Antilles and Canary Islands.
From: Late Ordovician climate change and extinctions driven by elevated volcanic nutrient supply
In blue are GEOROC-derived protolith compositions, from which the linear relationships indicated the lower right of each panels are defined. Red circles indicate measured altered ash deposit analyses, plotted against the expected trend for unaltered material. Percentage depletion is indicated by the dashed lines.
