Introduction
Experimental procedure
Assembly for shear deformation of single crystal olivine
Results
Dislocation structure of dry sample
FTIR of wet sample
Dominance of Group I band => VSi" defects
Dislocation structure of wet sample
Dislocation lines are observed on (001) plane => E-slip is activated
Discussion
Possible mechanism of water-activated e-slip system
Replacing Si by H atom destroy Si-O bond in the olivine => Easier to slip on (001) plane
Implications
Wang, L., Miyajima, N., Kawazoe, T., Katsura, T., Activation of 100 (001) slip system by water incorporation in olivine and the cause of seismic anisotropy decrease with depth in the asthenosphere. Am. Miner. 104, 47-52, 2019.
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