Forward simulations calculating the height of compacting column as a function of time using parameters in table 5 . Calculations for an initial column height of 1 m using parameters obtained from the MCMC with extrapolation to a grain size of 4 mm, where grain size exponent n = 3 for GBD and where n = 0 (green curve), n = 1.9 (red curve), and n = 3 (blue curve) for repacking. In the case of repacking, the values for n are endmember scenarions.