GNGTS 2018 - 37° Convegno Nazionale

152 GNGTS 2018 S essione 1.1 this fault. Under the crude assumption of constant long-term throw-rates, we hypothesize the activity of this splay started >0.4 Myr ago, which seems consistent with the depicted structural setting. This would also suggest the timing of shift of extensional activity in the PGC basin area from dominant N30°-trending faults to dominant N130°-150°-trending faults ( i.e. the VBFS). References Baccheschi P., Pastori M., Margheriti L. and Piccinini D.; 2016: Shear wave splitting of the 2009 L’Aquila seismic sequence: fluid saturated microcracks and crustal fractures in the Abruzzi region (Central Apennines, Italy). Geophys. J., Int., 204 , 1531-1549, https://doi.org/10.1093/gji/ggv536 Calamita F., Pizzi A. and 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.; 2012: Unravelling the complexity of Apenninic extensional fault systems: A review of the 2009 L’Aquila earthquake (Central Apennines, Italy). J. Struct. Geol., 42 , 2-18, 10.1016/j.jsg.2012.06.007 Chiaraluce L., Di Stefano R., Tint, E., Scognamiglio L., Michele M., Casarott, E., Cattaneo M., De Gori P., Chiarabba C., Monachesi G., Lombardi A., Valoroso L., Latorre D. and Marzorati S.; 2017: The 2016 Central Italy seismic sequence: a first look at the mainshocks, aftershocks and source models. Seismol. Res. Lett., 8 , 3, 1-15, doi: 10.1785/0220160221 Civico R., Sapia V., Di Giulio G., Villani F., Pucci S., Baccheschi P., Amoroso S., Cantore L., Di Naccio D., Hailemikael S., Smedile M., Vassallo M., Marchetti M. and Pantosti D.; 2017: Geometry and evolution of a fault- controlled Quaternary basin by means of TDEM and single-station ambient vibration surveys: the example of the 2009 L’Aquila earthquake area . J. Geophys. Res. - Solid Earth, 122 , 3, 2236-2259, doi: 10.1002/2016JB013451. 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 Di Giulio G., de Nardis R., Boncio P., Milana G., Rosatelli G., Stoppa F. and Lavecchia G.; 2016: Seismic response of a deep continental basin including velocity inversion: the Sulmona intermontane basin (Central Apennines, Italy). Geophys. J. Int., 204 (1), 418-439, doi: 10.1093/gji/ggv444. Galadini F. and 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 Hurd O. and Bohnhoff M.; 2012: Stress- and Structure-Induced shear-wave anisotropy along the 1999 Izmit Rupture, Northwest Turkey. Bull. Seism. Soc. Am., 102 (5), 2177-2188. Liu Y., Zhang H., Zhang X., Pei S., An M. and Dong S.; 2015: Anisotropic upper crust above the aftershock zone of the 2013 Ms 7.0 Lushan earthquake from the shear wave splitting analysis. Geochem. Geophys. Geosyst, 16 , 3679-3696, doi:10.1002/2015GC005972 Pierantoni P.P., Deiana G. and 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. and 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. Pizzi A., Di Domenica A., Gallovič F., Luzi L. and Puglia R.; 2017: Fault segmentation as constraint to the occurrence of the main shocks of the 2016 Central Italy seismic sequence , Tectonics, 36 , 2370–2387, http:// dx.doi.org/10.1002/2017TC004652. Scognamiglio L., Tinti E., Casarotti E., Pucci S., Villani F., Magnoni F., Michelini A., Dreger M. and Cocco M.; 2018: Complex fault geometry and rupture dynamics of the Mw 6.5, 2016, October 30th central Italy earthquake. J. Geophys. Res. Solid Earth, 123 , 4, 2943-2964, doi: 10.1002/2018JB015603. Sibson R., Ghisetti F. and Ristau J.; 2011: Stress control of an evolving strike-slip fault system during the 2010–2011 Canterbury, New Zealand, earthquake sequence. Seism. Res. Lett., 82 , 824–832. Villani F. and 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., 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, doi: 10.1029/2018TC005175.