Extended Data Figure 4: TEM and high-resolution TEM images of a Fo+Di sample after the compression experiment at 1,350 °C (KF-191).
From: Olivine crystals align during diffusion creep of Earth’s upper mantle
a, TEM image of multiple grains showing the large-scale structure of grain boundaries. b, High-resolution TEM image of the forsterite grain boundary indicated by the arrow in a, showing that the boundary is parallel to the (010) plane of the central forsterite grain. Bending contrasts and a circular contrast from beam damage are observed. No dislocations are identified.
