## 5 Discussion
### Tectonic Setting  
As demonstrated, the use of several different diagrams to determine tectonic setting turned out to be expedient. Six discriminant functions resulted in three different tectonic settings, which is difficult to justify despite the complexity of the area in the given environment at the transition between the Adriatic and European tectonic plates [45]. The multidimensional diagram based on the major oxides for low- and high-silica content, according to [PERSON] and [PERSON] [3] and the discriminant function based on the major oxides, according to [PERSON] and [PERSON] [2], gave rather unequal results. The majority of the samples fall within the collision field in the low- and high-silica diagram, and only a few samples plot into the rift field (Figure 11). In contrast, the samples in the discriminant function were plotted into the field of the passive margin (Figure 9). Such contradictory results were found in previous studies [15] in the western part of the PBS and Central Paratethys. This disunity coincides well with abovementioned tectonic processes that continued from the Oligocene and were active during the Miocene [20]. Discriminant functions (Figure 11) indicate a strong dominance of the collision field, which indicates the tectonic setting in which the sediments were deposited in the basin. A distinct collision zone can therefore be traced in the samples of Badenian and Sarmatian age, while the activity of the major faults (Periodriatic and Sava Faults) can be detected throughout the whole period. The discriminant function (Figure 12) shows a significant impact of the passive margin, indicating a strong prevalence of extension processes. Unexpectedly, these stem from the Lower Miocene onward. Since the formation of the PBS started in the late Early Miocene (as discussed earlier in this chapter), it was expected that the diagram would show the difference between the samples from the Govce formation and the other samples. It is difficult to explain the subjection of the sediments to a specific tectonic setting that did not yet exist at the time of sedimentation. However, the above findings stress that the discriminant function after [PERSON] and Armstrong Altrin [3] shows the tectonic setting of the source rocks, while the discriminant function after [PERSON] and Armstrong Altrin [2] shows the tectonic setting during sedimentation; nonetheless, caution in interpreting the results is advised. The discriminant function after [PERSON] and Korsch [66] (Figure 9) reveals another tectonic setting. It indicates that the majority of the Early Miocene and early Middle Miocene sediments were subjected to the oceanic island arc and the majority of the Sarmatian samples to the active continental margin. The study area is located at the triple junction of the Alpine orogen, the Pannonian Basin System and Dinaric tectonic units [45] and the oceanic island arc setting is not expected in this area [22; 115; 116]. However, it is more likely that the diagram reflects the tectonic setting of the source rocks from the Eastern and SouthernAlps. These rocks were transported to the study area in the Neogene with different transport processes. Oceanic and more frequently continental island arcs have been defined in the Karawanks [34], and constitute the Late Paleozoic-Mesozoic geodynamic evolution in the Tethys area [117; 118; 119]. These differences between the results of the Badenian and Sarmatian samples could be related to paleogeographic changes that allowed a different sedimentary input. [PERSON]'s [68] diagrams proved to be very unreliable in this study because most of the samples plot outside of any field (Figure 10). The reason for this could be the influence of chemical weathering on the sediments. Therefore, an additional investigation was carried out, excluding all samples with CIA above 80 (Figure 13a,c). The investigation helped ascertain that these samples fell out of the margins of the diagram (Figure 13a), but not in the case of the ratio of Fe and Mg oxides to Al and Si oxides (Figure 13c).