“…The boundaries are free-slip and the bottom boundary is kept at 160°C implying an average geothermal gradient of 35 K/km. The salt has the dislocation creep properties of West Hackberry rocksalt (WH2; see Table 21, a grain size of d = 3 cm, and density psalt = 2160 kg rnm3, which lies midway in the range recorded for natural salt (Gevantman, 1981;Hatheway and Kiersch, 1982). The sediments are isoviscous with qsediment = 3 x 1019 Pa s. The density of the sediments is Psediment = 2300 kg m3.…”