GNGTS 2018 - 37° Convegno Nazionale

190 GNGTS 2018 S essione 1.2 taken place in this field of research. The fault characterization with respect to their Rn signature and the understanding of geophysical and geochemical processes at the fault neighboring are necessary prerequisites for their evaluation in terms of seismic prediction. For doing this, it is required: (1) to assess the role of the structural geological factors in the formation of the radon field above the fault zones, (2) to characterise the structural situations determining the pattern of the near fault radon anomalies, and (3) to reveal the levels of radon activity for the faults in the studied region. References Annunziatellis A., Beaubien S.E., Big S., Ciotoli G., Coltella M. and Lombardi S.; 2008: Gas migration along fault systems and through the vadose zone in the Latera caldera (central Italy): Implications for CO2 geological storage. International Journal of Greenhouse Gas Control , 2 , 353-372. Bosi, C., Galadini F. and Messina P; 1995: Stratigrafia plio-pleistocenica della Conca del Fucino. Quaternario , 8(1) , 83-94. Cara F., Di Giulio G., Cavinato G.P., Damiani F. and Milana G.; 2011: Seismic characterization and monitoring of Fucino Basin (Central Italy). Bull. Eartquake Eng ., 9 , 1961-1985. Cavinato, G. P., Carusi C., Dall’Asta M., Miccadei E. and Piacentini T.; 2002: Sedimentary and tectonic evolution of Plio-Pleistocene alluvial lacustrine deposits of Fucino basin (central Italy). Sediment. Geol. , 148 , 29–59. Ciotoli G., Sciarra A., Ruggiero L., Annunziatellis A. and Bigi S.; 2016: Soil gas geochemical behaviour across buried and exposed faults during the 24 August central Italy earthquake. Annals of Geophysics , 59 , Fast Track 5, doi: 10.4401/ag-7242. Ciotoli G., Ascione A., Bigi S., Lombardi S. and Mazzoli S.; 2014: Soil gas distribution in the main coseismic surface rupture zone of the 1980, Ms=6.9, Irpinia earthquake (southern Italy). Journal of Geophysical Research , 119/3 , 2440–2461, DOI:10.1002/2013JB010508. Ciotoli G., Lombardi S. and Annunziatellis A.; 2007: Geostatistical analysis of soil gas data in a high seismic intermontane basin: Fucino Plain, central Italy. Journal of Geophysical Research , 112 (B5) . Davidson J.R., Fairley J., Nicol A., Gravley D., and Ring U.; 2016: The origin of radon anomalies along normal faults in an active rift and geothermal area. Geosphere ; 12 (5), doi:10.1130/GES01321.1. Fossen H., Schultz R.A., Rundhovde E., Rotevatn A. and Buckley S.J.; 2010: Fault linkage and graben stepovers in the Canyonlands (Utah) and the North Sea Viking Graben, with implications for hydrocarbon migration and accumulation. AAPG Bulletin , 94 (5) , 597-613, doi:10.1306/10130909088. Galadini, F., Galli P., and Giraudi C.; 1997: Geological investigations of Italian earthquakes: New paleoseismological data from the Fucino Plain (central Italy). J. Geodyn ., 24(1)-(4) , 87– 103. King C.Y., King B.S., Evans W.C. and Zhang W; 1996: Spatial radon anomalies on active faults in California. Applied Geochemistry , 11 , 497-510, doi: 10 .1016 /0883 -2927 (96)00003 -0. Peacock D.C.P. and Sanderson D.J.; 1991: Displacements, segment linkage and relay ramps in normal fault zones. J. Struct. Geol. , 13 , 721-733 Seminsky K.Zh., BobrovA.A. and Demberel S.; 2014: Variations in RadonActivity in the Crustal Fault Zones: Spatial Characteristics. Physics of the Solid Earth , 50 (6) , 795–813, doi: 10.1134/S1069351314060081. THE SCHIZOSPHERE-PLASTOSPHERE BOUNDARY THROUGH RHEOLOGICAL MODELLING ACROSS AND ALONG A FOLD-AND-THRUST BELT: CASE STUDIES FROM THE HELLENIDES, GREECE, AND SEISMOTECTONIC APPLICATIONS M. Maggini 1,2 , R. Caputo 1,2 1 Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, Italy 2 Centro Interuniversitario per la Sismotettonica Tridimensionale, CRUST-UR Ferrara, Italy Introduction . In this work we used rheological modelling, by means of strength profiles calibration and realization, to determine the depth of the brittle-ductile transition in the Aegean Region, more specifically in relationship with the Hellenides fold and thrust belt. The final aim is to compare the rheological results with the corresponding seismicity and apply the results