## 3 Geological Data Interpretation
Each part moves with a rotation predominantly toward the NNE and N. The presence of recent tectonic activity is confirmed by the epicentres of relatively numerous earthquakes. Concentrations of earthquakes, especially around Zagreb, Dubrovnik and the Adriatic microplate, indicate active parts of geological structures in the observed period. The most crucial task was comparing the obtained directions of the movements of the geodetic stations and the parts of the structures along the surface based on the geological data (Figure 7). The directions obtained at the geodetic points show the basic real movements of the parts of the structural units. The featured geological directions of the movements along the most important reverse faults with vergences toward the SW and SSW in all parts of the structural setting are almost always opposed to the starting directions of the movements at the geodetic points. This is a direct sign of the existence of reactions to the basic directions of tectonic movements. In the detailed comparisons with the amplitudes and angles of the movements, it should be taken into consideration that the intensity of the tectonic movements is oscillating. The reverse faults with vergences toward the NE and NNE are less reflected in the relief because of the smaller amplitudes of the reverse movements. However, in some places, along the contact between rocks of different densities, the movements of the complexes of rocks with higher density are dominant. Examples can be found in Istria (the AMP and along the Ljubljana-Karlovac-Slunj fault (5)). Figure 7 shows the changes in the direction of the movements determined by geodetic and geological measurements. The direction changes are always to the left, from the NE direction to the N, around Split and Zadar, or in the NNW direction around Rijeka and in Istria. This is obviously a consequence of the retrograde rotation of particular geological structures or even parts of the structural setting. This is also confirmed by the strikes of faults along whose walls the horizontal component of the movement prevails. Residual gravimetric anomalies are evidence of the existence of reversing structures and primary reverse movements along the faults with vergences toward the SW and SSW. These show the placement of the structures in the first kilometers of depth. Figure 8 shows anomalies in the area of the southern Adriatic islands. The shifts in the lowered and elevated parts of the structure are distinguished from their surface projections. Under the conditions of space compression, there is always a reverse penetration of rocks with different densities toward the surface. The resulting reversing structures are clearly reflected in the relief. Figure 9 shows the steep relief created in the Moser-Biokovo-Dubrovnik fault zone (4a,b). Tectonic movements in the Adriatic unit (A) are transverse to the strike of the fault. Thus, reverse movements along the hanging wall of the fault are very pronounced. The existence of branches of the main faults in the observed zone point to the recent reversal movements and the possible creation of new forms of relief. It has already been emphasized that, in the Dinarides (D, SD) geological structure setting and in the Adriatic (A) unit, there are structures with reverse faults with opposite vergences along their walls. The appearance of such local structures in the broader zones of particular faults indeed emphasizes their most tectonically active sections. In this respect, the most important faults bordering regional structural units are especially emphasized. As shown in Figure 10, a relatively larger local reverse structure is located around Crikvenica. Figure 8: Gravimetric residual anomalies in the area of southern Adriatic islands and Biokovo.