Fig. 2. Process of a shear transition of olivine to ringwoodite via poirierite. (IMAGE)

Ehime University

Fig. 2. Process of a shear transition of olivine to ringwoodite via poirierite.

Caption

Left and center: kinking (i.e., shear deformation) of an olivine crystal at pressures greater than 15 GPa results in the formation of a poirierite crystal. Right: Further shear transition of poirierite to ringwoodite associates a significant latent heat release, resulting in faulting.

Credit

Tomohiro Ohuchi

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