Articles | Volume 35, issue 2
Research article
31 Mar 2023
Research article |  | 31 Mar 2023

Dislocation and disclination densities in experimentally deformed polycrystalline olivine

Sylvie Demouchy, Manuel Thieme, Fabrice Barou, Benoit Beausir, Vincent Taupin, and Patrick Cordier

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Cited articles

Acharya, A. and Fressengeas, C.: Continuum mechanics of the interactions between phase boundaries and dislocations in solids, in: Differential Geometry and Continuum Mechanics, edited by: Chen, G. Q., Grinfeld, M., and Knops, R. J., Vol. 137, Springer Proceedings in Mathematics and Statistics, 125–168,, 2015. 
Bachmann, F., Hielscher, R., and Schaeben, H.:Texture Analysis with MTEX – Free and Open Source Software Toolbox, in: Presented at the Texture and Anisotropy of Polycrystals III, edited by: Klein, H. and Schwarzer, R. A., Trans. Tech. Pub. Ltd., Durnten-Zurich, Swizerland, p. 63,, 2010. 
Bernard, R. E., Behr, W. M., Becker, T. W., and Young, D. J.: Relationships Between Olivine CPO and Deformation Parameters in Naturally Deformed Rocks and Implications for Mantle Seismic Anisotropy, Geochem. Geophy. Geosy., 20, 3469–3494,, 2019. 
Beausir, B. and Fressengeas, C.: Disclination densities from EBSD orientation mapping, Int. J. Solids Struct., 50, 137–146,, 2013. 
Beausir, B. and Fundenberger, J.-J.: Analysis Tools For Electron And X-ray diffraction, ATEX – software, Université de Lorraine – Metz, (last access: 24 March 2023), 2017. 
Short summary
We report a comprehensive data set characterizing and quantifying two types of mineral defects in the most abundant mineral of Earth's upper mantle: olivine. Namely, we investigate translation defects of dislocation and rotation defects, called disclinations, in polycrystalline olivine deformed in uniaxial compression or torsion, at high temperature and pressure. The defects are identified via mapping of the crystallographic disorientation detected using electron backscatter diffraction.