1. pressure at depth. For example, the stress regime in N. Barton & O. Stephansson (eds.) Proc. ISRM Symp on
2. slip in a wide range of orientations 15◦< θ < 60◦and orgiou & M. Grenon (eds.), Proc. Third Int Deep Seam
3. Equation 2, are also shown. Symp Rock Support. Rotterdam: Balkema.