We present the results of a multidisciplinary and multiscale study at Mt. Massico, Southern Italy. Mt. Massico is a carbonate horst located along the Campanian-Latial margin of the Tyrrhenian basin, bordered by two main NE–SW systems of faults, and by NW–SE and N–S trending faults. Our analysis deals with the modeling of the main NE–SW faults. These faults were capable during Plio-Pleistocene and are still active today, even though with scarce and low energy seismicity (Mw maximum = 4.8). We inferred the pattern of the fault planes through a combined interpretation of 2D hypocentral sections, a multiscale analysis of gravity field and geochemical data. This allowed us to characterize the geometry of these faults and infer their large depth extent. This region shows very striking gravimetric signatures, well-known Quaternary faults, moderate seismicity and a localized geothermal fluid rise. Thus, this analysis represents a valid case study for testing the effectiveness of a multidisciplinary approach, and employing it in areas with buried and/or silent faults of potential high hazard, such as in the Apennine chain.
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