17 July 2024 - New publication in Journal of Geophysical Research
Evidence of Dislocation Mixed Climb in Quartz From the Main Central and Moine Thrusts: An Electron Tomography Study
In this paper, we present a detailed characterization of the deformation microstructures of two quartz samples deformed in nature in the Moine and Main Central Thrusts. We exploit here the possibilities of tomography of dislocations in transmission electron microscopy.
We highlight the significant activation of <c+a> dislocations, but above all a major contribution from climb.
More specifically, we demonstrate the activation of a still little-studied deformation mechanism: the mixed climb. This mode of deformation implies a comparable velocity of dislocations during glide and climb. This is probably a particular response to the very low natural strain rates.
To learn more:
T. Weidner, A. Mussi, O. Castelnau, A.K. Kronenberg, R. Law & P. Cordier (2024) Evidence of mixed climb in quartz from Moine and Main Central Thrusts: an electron tomography study. Journal of Geophysical Research Research: Solid Earth, 129, e2024JB029083. https://doi.org/10.1029/2024JB029083