GNGTS 2019 - Atti del 38° Convegno Nazionale

136 GNGTS 2019 S essione 1.2 Faccenna, C., Funiciello, F., Giardini, D., Lucente, P., 2001. Episodic back-arc extension during restricted mantle convection in the Central Mediterranean. Earth Planet. Sci. Lett. 187, 105–116. doi:10.1016/S0012- 821X(01)00280-1 Jolivet, L., Faccenna, C., 2000. Mediterranean extension and the Africa-Eurasia collision. Tectonics 19, 1095–1106. doi:10.1029/2000TC900018 Merlini, S., Cantarella, G., Doglioni, C., 2000. On the seismic Profile Crop M5 in the Ionian Sea. Boll. Geol. Soc. It. 119, 227–236. Palano,M., Piromallo, C., Chiarabba, C., 2017. Surface imprint of toroidal flowat retreating slab edges:The first geodetic evidence in the Calabrian subduction system. Geophys. Res. Lett. 44, 845–853. doi:10.1002/2016GL071452 Pescatore, T., Senatore, M.R., 1986. A Comparison between a Present-Day (Taranto Gulf) and a Miocene (Irpinian Basin) Foredeep of the Southern Apennines (Italy), in: Allen, P.A., Homewood, P. (Eds.), Foreland Basins. Blackwell Publishing Ltd., Oxford, UK, pp. 169–182. doi:10.1002/9781444303810.ch8 Pieri, Piero, Festa, V., Moretti, M., Tropeano, M., 1997. Quaternary tectonic activity of the Murge area (Apulian foreland - Southern Italy). Ann. di Geofis. Pieri, P., Vitale, G., Beneduce, P., Doglioni, C., Gallicchio, S., Giano, S.I., Loizzo, R., Moretti, M., Prosser, G., Sabato, L., Schiattarella, M., Tramutoli, M., Tropeano, M., 1997. Quaternary tectonics in the Bradanic-lonian area | Tettonica quaternaria nell’area bradanico-ionica. Alp. Mediterr. Quat. 10. Polonia, A., Torelli, L., Mussoni, P., Gasperini, L., Artoni, A., Klaeschen, D., 2011. The Calabrian Arc subduction complex in the Ionian Sea: Regional architecture, active deformation, and seismic hazard. Tectonics 30, TC5018. doi:10.1029/2010TC002821 Ricchetti, G., Ciaranfi, N., Luperto Sinni, E., Mongelli, F., Pieri, P., 1988. Geodinamica ed evoluzione sedimentaria e tettonica dell’avampaese apulo. Mem. della Soc. Geol. Ital. 41, 57–82. Rossi, S., Sartori, R., 1981. A seismic reflection study of the External CalabrianArc in the northern Ionian Sea (eastern Mediterranean). Mar. Geophys. Res. 4, 403–426. doi:10.1007/BF00286036 INFERRING CRUSTAL TEMPERATURES BENEATH ITALY FROM AMBIENT NOISE, RECEIVER FUNCTIONS AND THERMODYNAMIC MODELING G. Diaferia 1 , F. Cammarano 1 , N.P. Agostinetti 2,3 , V. Lekic 4 , C. Faccenna 1 1 Department of Geoscience, Università Roma Tre, Rome, Italy 2 Department of Geodynamics and Sedimentology, Faculty of Earth Sciences, Geography and Astronomy, University of Wien, Vienna, Austria 3 Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy 4 Department of Geology, University of Maryland, USA Introduction. Unraveling the thermochemical structure of the crust is fundamental for the understanding of its tectonic, magmatic, and geodynamical processes, both at local and global scales. Crustal rheological behavior holds direct implications for deformation between plates, the storage of mechanical stress, and, consequently, the overall seismicity. Moreover, the crust influences magmatic processes, controlling their spatial and temporal evolution, the chemical signature of magmas, their emplacement, and eruptive style. Temperature distribution at depth is of key importance for characterizing the crust, defining its mechanical behavior and deformation. In fact, temperature distribution controls the depth of the brittle-to-ductile transition (BDT; Rutter, 1986), marking the change from elastic (related to earthquakes nucleation) to plastic behavior. Despite its importance, temperature is only poorly known at depth and it is commonly inferred via heat flow measurements in boreholes, assuming a purely conductive heat transfer mechanism. However, heat flow data are scarce, have poor spatial representativeness, and suffer from systematic errors due to the measurement technique employed in the borehole. Particularly in active regions, the assumption of a purely conductive heat transfer does not hold due to the prominent role of fluid upwelling ( advection ), as suggested by the typically high