Full-Field numerical simulations of olivine dynamic recrystallisation during viscoplastic deformation

Peridotites, which primarily consist of olivine, are rocks located in the Earth's upper mantle. The mechanical behavior of the upper mantle is heavily influenced by this mineral. When the mantle undergoes flow, olivine experiences viscoplastic deformation, resulting in the development of crystallographic preferred orientations (CPO). Scientists can analyze the observed CPO in olivine-rich rocks to determine the direction of mantle flow. In this study, microdynamic numerical simulations are conducted on aggregates of olivine to investigate the effects of dynamic recrystallization during viscoplastic deformation on the microstructure and CPO. This dataset contains the output files of the simulations PT248, PT263 and PT345, using the viscoplastic fast Fourier transform (VPFFT, Lebensohn and Rollet, 2020) in conjunction with the ELLE modeling platform (Bons et al., 2008). For the visualization of the microstructures the information included in these output files can be launched using the software toolbox MTEX (Bachmann et al., 2011).