Deformation experiments of (Mg,Fe)SiO₃-perovskite at the lower mantle conditions using Kawai-type apparatus for triaxial deformation

Abstract

Deformation experiments of (Mg,Fe)SiO₃-perovskite and post-spinel ((Mg,Fe)SiO3-perovskite + ferropericlase) at the lower mantle conditions (25 GPa, 1873 K) were conducted using the Kawai-type apparatus for triaxial deformation (KATD) installed at Magma Factory, Tokyo Institute of Technology. Lattice preferred orientation (LOP) of recovered samples were measured using monochromatic 2D X-ray diffraction pattern. After deformation of ∼25% strain with strain rate of 7 * 10^-5 /s, no clear change was observed in LPO of perovskite for both samples.