  We investigate the effect of solute drag on grain growth (GG) kinetics in
olivine-rich rocks through full field and mean field modelling. Considering a
drag force exerted by impurities on grain boundary migration allows reconciling
laboratory and natural constraints on olivine GG kinetics. Solute drag is
implemented in a full field level-set framework and on a mean field model,
which explicitly accounts for a grain size distribution. After calibration of
the mean field model on full field results, both models are able to both
reproduce laboratory GG kinetics and to predict grain sizes consistent with
observations in peridotite xenoliths from different geological contexts.
