GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 1.1 GNGTS 2023 Active or inactive? When the basin sediments unravel the status of activity of a fault B. Giaccio 1 , P. Galli 2,1 , P. Messina 1 , E. Peronace 1 1 Istituto di Geologia Ambientale e Geoingegneria, CNR-IGAG, Monterotondo, Rome, Italy 2 Dipartimento della Protezione Civile Nazionale, Rome, Italy The evaluation of the seismogenic potential and the seismic hazard of a given area depend, among other, on the assessment of the spatial and temporal parameters associated to the tectonic structures recognisable in the same area. With this regard, the Earth Sciences provide a wide array of techniques and methodologies useful for defining the architecture, the potential associated magnitude and the temporal-spatial evolution of active and capable faults. This includes both classical, e.g., Quaternary geology, morphotectonic and geophysical explorations, and new potentially powerful approaches, such as high resolution digital geomorphology and cosmogenic nuclide analyses. However, with the advent of these important technological and methodological advances, the most traditional approaches have been progressively and prejudicially neglected, especially by the new generations of Italian geoscientists, resulting in an inevitable detriment for the development of studies in the field of seismotectonic and seismic hazard. In this study, by reviewing some study cases of Quaternary faults of the central-southern Apennines, we show how classical basin analysis, and in particular the lithostratigraphical and geochronological analysis of sedimentary successions hosted in tectonic basins, can be determinant in defining the long-term history of a tectonic structure and its current state of activity.