GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 1.1 - POSTER GNGTS 2023 In other words, although it is possible that the seismogenic sources that generated the historical Crati Valley earthquakes and the instrumental events of the recent decades may be linked to the known N-S faults at the surface, given also the magnitude values attributed to these earthquakes and the consequent size of the areas of coseismic rupture, it is likely that these remain confined at depth and have not reached the surface topography since at least the late Middle Pleistocene. Acknowledgments This work was undertaken as part of a collaboration between DPC and ITALFERR. The ERT was performed by PROGEO. References Brozzetti F., Cirillo D., Liberi F., Piluso E., Faraca E., De Nardis R., Lavecchia G.; 2017. Structural style of Quaternary extension in the Crati Valley (Calabrian Arc): Evidence in support of an east‐dipping detachment fault. Italian Journal of Geosciences, 136, 434–453. https://doi.org/10.3301/IJG.2017.11 Cifelli F., Mattei M., Rossetti, F.; 2007. Tectonic evolution of arcuate mountain belts on top of a retreating subduction slab: The example of the Calabrian Arc. Journal of Geophysical Research, 112, B09101. https://doi.org/10.1029/2006JB004848 Galli P., Bosi V.; 2003. Catastrophic 1638 earthquakes in Calabria (southern Italy): New insight from paleoseismological investigation, J. of Geophys. Res., 108, B110.1029/2002JB01713. Galli P., Scionti V., Spina V.; 2007. New paleoseismic data from the Lakes and Serre faults (Calabria, southern Italy). Seismotectonic implication, Boll. Soc. Geol. It., 126, 347-364. Lanzafame G., Tortorici L.; 1981. La tettonica recente della Valle del fiume Crati (Calabria). Geogr. Fis. e Din. Quat. 1981, 4, 11–21. Pepe F., Sulli A., Bertotti G., Cella F., 2010. Architecture and Neogene to recent evolution of the western Calabrian continental margin: an upper plate perspective to the Ionian subduction system, central Mediterranean. Tectonics, 29, http://dx.doi.org/10.1029/2009TC002599 (TC3007). Robustelli G., Muto F.; 2017. The Crati River Basin: Geomorphological and stratigraphical data for the Plio-Quaternary evolution of northern Calabria, South Apennines, Italy, Geologica Carpathica, 68, 68-79. Spina V., Tondi E., Galli P., Mazzoli S.; 2009. Fault propagation in a seismic gap area (northern Calabria, Italy): Implications for seismic hazard. Tectonophysics, 476, 357-369. Tansi, C.; Muto, F.; Critelli, S.; Iovine, G.; 2007. Neogene-Quaternary strike-slip tectonics in the central Calabrian Arc (southern Italy). J. Geodyn., 43, 393–414.