Figure 1

Map showing oceanic diamond and oceanic mantle plume occurrences. The data are from Lian and Yang16 and Doucet et al.33. The world map is made using GPlate 2.2 open-source software (licensed under the GNU General Public License version 2 https://www.gplates.org/) with open-source coastline data from Matthews et al.34 (licensed under Creative Common Attribution 4.0 International License https://www.earthbyte.org/category/resources/).