Plot of the misfit function () calculated by assuming optimum plateau height, denudation and final position of the drainage divide (Methods). Note that a misfit value < 1 means that these conditions are met and white contours indicate where this is true. X denotes the position of the model (in parameter space) shown in a c. Dashed line denotes the maximum limit of acceptable values for K f that would allow the plateau to survive to the present day.
