Fig. 2
From: Global geochemical fingerprinting of plume intensity suggests coupling with the supercontinent cycle

Density plot of Fe/Mn vs. Mg# for different basaltic types. a Plume-related basalts (PRB); b mid-ocean ridge basalts (MORB); c arc-related basalts. Data sources: Georoc and EarthChem (see Methods). Black contours define the data density values from high density (blue) to low density (red). The white contour represents 70% of the PRB data