P and S velocities, P delay and shear wave splitting as a function of incidence angle γ for microstructures with muscovite modal fractions of (a) ϕMs= 0.3, (b) ϕMs= 0.6, (c) ϕMs= 0.9, and varying muscovite orientation distributions (α= 0–30). The quartz is randomly oriented for all plots. All results are calculated using the AEH-FE method.