elastic rebound
$ calculations (typically 1024 1024 but must be a power of 2)
0 2700.,3200.,1.d11,0.25,28.8,1024,1024

$ (11) the model thickness (in km), number of points in the z direction, thermal diffusivity in km2/Myr,
$ temperature at the base of the model (in C), temperature at z=0 (in C), atmospheric lapse rate (in
$ C/km), heat production in C/My
25.,31,25.,550,0.,0.,0.

$ (12) name of the file containing the thermochronological data
$ if Nil no date
$ otherwise it should contain the number of data