## 5 Structural Interpretation--Discussion
### Insight into the TRM Site and Bulk Enhanced Andersonian Stress Tensors  
The TRM application calculates enhanced Andersonian site stress tensors in all SSs, except for SS11. Most define TRP and TRN stress regimes, as implied by the predominance of the strike-slip and oblique-slip faults in the study area. In cases where the site stress tensors were calculated from less than 10 fault-slip data, they present differences in the horizontal stress axis orientation like the pairs (T1 SS3, TSS6) and (T3 SS3, T2 SS7) (Table 2).  
The TRM application on the whole fault-slip dataset (Appendix A) defines five bulk stress tensors, T1 TRM, through T5 TRM (Table 3). Apart from the first, the other bulk stress tensors were calculated with more than 10 fault-slip data, i.e., the minimum number to overcome randomly defined stress tensors [41]. These bulk stress tensors can activate more than four differently oriented fault-slip data in a few SS, and fault-slip data from several SS having similar attitudes, as in the case of similar fault activations recorded through focal mechanisms at different sites in seismically active areas, e.g., [87]. In addition, from Tables 2 and 3, it seems that both TRM site and bulk stress tensors define similar stress regimes like (a) T1 TRM with T5 SS6, (b) T2 TRM with T3 SS7, (c) T3 TRM with T3 SS3 and T2 SS7, (d) T4 TRM with T5 SS and T1 SS7, and (e) T5 TRM with T1 SS3. This similarity occurs because the TRM stress tensors are calculated from the Tensor Ratio Compatible Faults regardless of the number of fault-slip data [44; 85].  
The interesting issue is that all the resolved enhanced Andersonian site stress tensors define transprssional _s.l._ stress regimes, i.e., those that fit well with the predominance of subhorizontal to oblique-slip faults over the dip-slip faults [24; 25; 26] in the recording dataset mentioned. Therefore, the enhanced Andersonian stress tensors can fairly describe transprss _s.l._ stress regimes.  
When the minimization criterion of MA \(\leq\) 30\({}^{\circ}\) was only considered, the TRM bulk stress tensors explained more fault-slip data out of the whole fault-slip dataset than those defined by the TRM application (see T1 all through T5 all in Table 4). Because of the large number of the explained fault-slip data, these solutions can hardly be considered to be a result of combining random fault-slip data by taking into account only the MA minimization criterion used by the best-fit stress inversion methods. For example, the T1 all stress tensor explains 10 more fault-slip data than T1 TRM. In addition, when a best-fit stress inversion method was applied to the fault-slip data explained by the T1 all to T5 all tensors, the resolved bulk stress tensors T1 MF through T5 MF, apart from the T5 MF, did not differ significantly from the T1 all through the T5 all, respectively (Tables 4 and 5). Apart from the T5 MF, all the tensors define one principal stress axis at \(\leq\) 25\({}^{\circ}\) from the vertical position following [PERSON]'s assumed'standard state' stress configuration near the Earth's free surface [88]. On the other hand, considering the T5 MF, someone might promptly conclude that the driving stress regime in the region might be of non-Andersonian type. However, the Andersonian standard state of stress is also supported by the paleomagnetic data in the region and, more precisely, the inclination values calculated by [69], which in their majority show no significant rotations (<10\({}^{\circ}\)) around the horizontal axes. As a result, both the Andersonian (T5\({}_{\text{all}}\)) and the non-Andersonian (T5\({}_{\text{MF}}\)) stress tensors explain the same fault-slip data with the minimization criterion MA \(\leq\) 30\({}^{\circ}\) and almost the same MMA. However, the enhanced Andersonian tensor T5\({}_{\text{all}}\) is more admissible for the region, suggesting that the enhanced Andersonian stress tensors can fairly describe the faulting deformation in a region, even if the latter is subjected to transpression _s.l._ tectonics.