| Authors | Crustal thickness | Crustal velocity | Mantle velocity | Mid crustal layer |
| Roller (1965) | 40-43 km | 6.2-6.8 km /s | 7.8 km/s | 26 km |
| Prodehl (1979) | 42-43 km | 6.1-6.8 km/s | 7.6-7.8 km/s | 30 km |
| Wolf and Cipar (1993) | 45 km | 5.9-6.8 km/s | 7.95 km/s | 30 km |
In general all authors found similar results. The most interesting contrasts are the end members for the crustal thicknesses and the mantle velocities. A 40 km thick crust would behave slightly differently than a 45 km crust. Also a mantle velocity of 7.6 km/s is relatively slow, while 7.95 is relatively fast. The crustal thicknesses and the mantle velocities are what are important for constraing the method of uplift.
Why different results?
In conclusion, seismic refraction data is relatively easy to interprate,
but data quality could still lead to ambiguous answers.