Extended Data Fig. 4: Effect of open versus closed systems on forsterite and Cr2O3 in garnet during advanced melting.
From: Deep, ultra-hot-melting residues as cradles of mantle diamond

Open-system and batch models show similar evolution in forsterite during progressive melting characterized by a continuous steep increase in forsterite until orthopyroxene is exhausted compared with delayed increase in forsterite component associated with incremental melt extraction. Maximum Cr2O3 in garnet is <15 wt% in hybrid-system models compared with >17 wt% during incremental melt extraction without komatiite input (incremental model).