Characteristics of each zone
| Zone 1 | Zone 2 | Zone 3 | |
 Fracture frequency |
High (subhorizontal - horizontal | Low | High (subvertical) |
| Deformability of matrix |
Relatively small | Relatively large | Relatively small |
| Anisotropy of mechanical properties of rock matrix |
Relatively small | Relatively large | Relatively small |
(a) Rock mechanics conceptual model of hanging wall of the Tsukiyoshi fault 77) 80)
(b) Rock mechanics conceptual model of footwall of the Tsukiyoshi fault
Figure 4.69 Rock mechanics conceptual model of hanging wall and footwall of the Tsukiyoshi Fault