Extended Data Figure 6: Schematic illustration of CPO formation during GBS.
From: Olivine crystals align during diffusion creep of Earth’s upper mantle
Anisotropic grains rotate under the operation of GBS, where GBS is easy on the long straight grain boundaries relative to the short grain boundaries (modified after ref. 16). Overlap and cavities formed at intergranular regions during GBS are removed and compensated, respectively, by atomic diffusion. Easy GBS planes align in the flow direction followed by the grain rotation, resulting in the formation of CPO in our samples.
