Integrazione di dati geodetici e geologici per lo studio dei processi di deformazione attiva in Sicilia Sud-Occidentale

In addition, some geometric anomalies in stream pattern have been observed on the NW flank of the Belice syncline where an interferometry anomaly (StaMPS) also occurs. Here, the morphometric anomaly depicts a curved-shaped lineament that extends for about 10 km from the sector to the south of Partanna village as far as the ruins of Gibellina (Partanna-Gibellina, PG lineament). It is characterized by a SW-NE direction along the Belice river valley and a NNW-SSE orientation on the northwest flank of the Belice syncline. Although this anomaly shows a minor continuity with respect to the CCA, it matches with a region where a significant accumulation of strain occurs. In addition, the proximity to the epicentral zone of the 1968 earthquake suggests that it could be the expression of recent deformation related to the seimogenic structure. The multidisciplinary approach has provided interesting results which also contributes to improve the knowledge about the area which was the most damaged by the 1968 earthquake sequence. Accordingly, another possible active segment (the Castelvetrano-Garcia Thrust System, CGTS), similar to GCTS, is inferred to occur here. The CGTS shows a N88°E direction and a total length of about 25km. Similarly to the GCTS, it can be subdivided into two segments (CP, Castelvetrano-Partanna and GLG, Gibellina- Garcia Lake), on the basis of different morphological features. The discovery of deformed ancient and modern artifacts along the CP and GLG segments allowed to define contractional