GNGTS 2019 - Atti del 38° Convegno Nazionale

132 GNGTS 2019 S essione 1.1 the upper termination of such transversal faults. This suggests that the extensional activity in the PGC basin involved several fault systems characterized by different timings of activity. The shallowest active splays of the VBFS imaged by our profiles probably represent the most recent phase of extension. With regard to the oldest faults imaged by our seismic profiles, we suggest they may have ceased their activity by the Middle Pleistocene. References Bruno P.P.G., Berti C., Pazzaglia F.J.; 2019: Accommodation, slip inversion and segmentation in a province-scale shear zone from high-resolution, densely spaced, wide-aperture seismic profiling, Centennial Valley, MT, USA . Scientific Reports, 9:9214, https://doi.org/10.1038/s41598-019-45497-1. Calamita F., Pizzi A., Roscioni M.; 1992: I fasci di faglie recenti ed attive di M. Vettore – M. Bove e di M. Castello – M. Cardosa (appennino Umbro-Marchigiano) . Studi Geologici Camerti, 1992/1, 81-95. Chiaraluce L., Di Stefano R., Tinti, E., Scognamiglio L., Michele M., Casarotti, E., Cattaneo M., De Gori P., Chiarabba C., Monachesi G., Lombardi A., Valoroso L., Latorre D., Marzorati S.; 2017: The 2016 Central Italy seismic sequence: a first look at the mainshocks, aftershocks and source models . Seismol. Res. Lett., 88(3), 757–771, https://doi.org/10.1785/0220160221. Civico R., Pucci S., Villani F., Pizzimenti L., De Martini P.M., Nappi R., and the Open EMERGEO Working Group; 2018: Surface ruptures following the 30 October 2016 Mw 6.5 Norcia earthquake, central Italy , Journal of Maps, https://doi.org/10.1080/17445647.2018.1441756. Galadini F., Galli P.; 2003: Paleoseismology of silent faults in the Central Apennines (Italy): the Mt. Vettore and Laga Mts. Faults . Annals of Geophysics, 46(5), 815-836, https://doi.org/10.4401/ag-3457. Ge.Mi.Na (Geomineraria Nazionale); 1963: Il bacino di Castelluccio di Norcia , in: Ligniti e Torbe dell’Italia continentale, 207-210, Industria Libraria Tipografica Editrice (ILTE), Torino. Improta L., ZolloA., HerreroA., Frattini M., Virieux J., Dell’Aversana P.; 2002: S eismic imaging of complex structures by non-linear traveltime inversion of dense wide-angle data: Application to a thrust belt . Geophys. J. Int., 151, 264–278, doi: 10.1046/j.1365-246X.2002.01768.x. Improta L., Zollo A., Bruno P. P., Herrero A., Villani F.; 2003: High resolution seismic tomography across the 1980 (Ms 6.9) Southern Italy earthquake fault scarp . Geophys. Res. Lett., 30(10), 1494, doi: 10.1029/2003GL017077. Improta L., Bruno P. P.; 2007: Combining seismic reflection with multifold wide-aperture profiling: An effective strategy for high-resolution shallow imaging of active faults . Geophys. Res. Lett., 34, L20310, doi:10.1029/2007GL031893. Improta L., Latorre D., Margheriti L., Nardi A., Marchetti A., Lombardi A.M., Castello B., Villani F., Ciaccio M.G., Mele F.M., Morett, M., and Bollettino Sismico Working Group; 2019: Multi-segment rupture of the 2016 Amatrice-Visso-Norcia seismic sequence (central Italy) constrained by the first high-quality catalog of Early Aftershocks , Scientific Reports, 9:6921, https://doi.org/10.1038/s41598-019-43393-2. Pierantoni P.P., Deiana G., . Galdenzi S.; 2013: Geological map of the Sibillini Mountains (Umbria-Marche Apennines, Italy) , Italian J. Geosci., 132(3), 497-520. Pizzi A., Calamita F., Coltorti M., Pieruccini P.; 2002: Quaternary normal faults, intramontane basins and seismicity in the Umbria-Marche-Abruzzi Apennine Ridge (Italy): contribution of neotectonic analysis to seismic hazard assessment , Boll. Soc. Geol. It. Spec. Issue 1, 923-929. Villani F., Tulliani V., Sapia V., Fierro E., Civico R., Pantosti D.; 2015: Shallow subsurface imaging of the Piano di Pezza active normal fault (central Italy) by high-resolution refraction and electrical resistivity tomography coupled with time-domain electromagnetic data . Geophys. J. Int., 203 (3), 1482-1494, doi: 10.1093/gji/ggv399. Villani F., Sapia V.; 2017: The shallow structure of a surface-rupturing fault in unconsolidated deposits from multi- scale electrical resistivity data: the 30 October 2016 Mw 6.5 central Italy earthquake case study , Tectonophysics, 717(16), 628-644, doi: 10.1016/j.tecto.2017.08.00. Villani F., Improta L., Pucci S., Civico R., Bruno P.P., Pantosti D.; 2017: Investigating the architecture of the Paganica Fault (2009 Mw 6.1 earthquake, central Italy) by integrating high-resolution multi-scale refraction tomography and detailed geological mapping , Geophysical Journal International, 208, 403-423, doi: 10.1093/gji/ggw407. Villani F., Civico R., Pucci S., Pizzimenti L., Nappi R., De Martini P.M., and the Open EMERGEO Working Group; 2018a: A database of the coseismic effects following the 30 October 2016 Norcia earthquake in Central Italy , Scientific Data, doi: 10.1038/sdata.2018.49. Villani F., Pucci S., Civico R., De Martini P.M., Cinti F.R., and Pantosti D.; 2018b: Surface faulting of the 30 October 2016 Mw 6.5 central Italy earthquake: detailed analysis of a complex coseismic rupture , Tectonics, 37, 10, 3378- 3410, doi: 10.1029/2018TC005175. Villani F., Sapia V., Baccheschi P., Civico, R. Di Giulio G., Vassallo M., Marchetti M., Pantosti D.; 2019: “ Geometry and structure of a fault-bounded extensional basin by integrating geophysical surveys and seismic anisotropy across the 30 October 2016 Mw 6.5 earthquake fault (central Italy): the Pian Grande di Castelluccio basin ”, Tectonics, 38, 1, 26-48, doi: 10.1029/2018TC005205.