Extended Data Figure 8: Sample of spinel (0.5 vol.%)-doped forsterite (50 vol.%) plus Ca-bearing pyroxene deformed at ∼1,320 °C with ε = 1.0.
From: Olivine crystals align during diffusion creep of Earth’s upper mantle
a, Secondary electron image of the sample. A very small amount of melt (∼1 vol.%; black) is present, mostly at triple-grain junctions. Dark grey, forsterite; light grey, pyroxene. b, Lower-hemispheric projections of the crystallographic orientations of forsterite grains measured by SEM/EBSD. N, number of measured grains. Both grain shape and CPO resemble that observed at high T.
