GNGTS 2016 - Atti del 35° Convegno Nazionale

GNGTS 2016 S essione 3.1 509 Fletcher, K. M. U., Fairhead J. D., Salem A., Lei K., Ayala C., and P. L. M. Cabanillas, (2011). Building a higher resolution magnetic database for Europe for resource evaluation, First Break, 29, 96–101. Florio, G., and M. Fedi (2006). Euler deconvolution of vertical profiles of potential field data. 76thAnnual International Meeting, SEG, Expanded Abstracts, 958����� –962. Giori, I., Caratori Tontini, F., Cocchi, L., Carmisciano, C., Bologna, C., Camorali, C.,Samarzija, J., Taylor, P., (2007). The adriatic magnetic anomaly. In: EGM 2007International Workshop Innovation in EM, Grav and Mag Methods: A NewPerspective for Exploration Capri, Italy, 16–18 April. Grad, M., Tiira, T., & Group, E. W., (2009). The Moho depth map of the European Plate, Geophys. J. Int., 176(1), 279–292. Juracic, M., Novosel, A., Tibljas, D., Balen, D., (2004). Jabuka shoal, a new locationwith igneous rocks in the Adriatic Sea. Geol. Croat. 57 (1), 81–85. Kummerow J, Kind R, Onken O, Giese P, Ryberg T, Wylegalla K, Scherbaum F, TRANSALPWorking Group (2004) A natural and controlled source seismic profile through the Eastern Alps: TRANSALP. Earth Planet Sci Lett 225:115–129 Li, X. (2005), Rejecting erroneous estimates in werner deconvolution: An inversion approach, SEG Tech. ������� Program Expanded Abs., 2005, 676����� –679. Mancinelli, P., Pauselli, C., Minelli, G., Federico, C., (2015). �������� ��� ����������� �������� �� ��� ������� Magnetic and gravimetric modeling of the central Adriatic region, Journal of Geodynamics, Volume 89, 60-70, ISSN 0264-3707, http://dx.doi.org/10.1016/ j.jog.2015.06.008. Milano, M., Fedi M., and J. D. Fairhead (2016), The deep crust beneath the Trans-European Suture Zone from a multiscale magnetic model, J. Geophys. Res. Solid Earth, 121, doi:10.1002/2016JB012955. Pamic, J., Balen, D., (2005). Interaction between Permo-Triassic rifting, magmatismand initiation of the Adriatic- Dinaric Carbonate platform (ADCP). Acta Geol.Hung. 48 (2), 181–204. Scrocca, D., Doglioni, C., Innocenti, F., (2003). ���������� ��� �� �������������� �� ��� ������� ������������ � ������� Contraints for an interpretation of the Italian Geodynamics: a review. In: Scrocca, D., Doglioni, C., Innocenti, F.,Manetti, P., Mazzotti, A., Bertelli, L., Burbi, L., D’Offizi, S. (Eds.), CROPAtlas: Seismic Reflection Profiles of the Italian Crust, 62. ���� ������ ����� ����� ������� ������ Mem. Descr. Carta Geol. It.,pp. 15–���46. Speranza, F., Maniscalco, R. & Grasso, M., (2003). ������� �� �������� ��������� �� ��������������� ������� ������������ Pattern of orogenic rotations in central-eastern Sicily: implications for the timing of spreading in Tyrrhenian Sea. Journal Geological Society London 106, 183-195. CORRELATION BETWEEN BSRs DIFFERENT ORIGINS AND ANTARCTIC SEDIMENTARY DOMAINS A. Mocnik 1 , R. Geletti 2 , D. Civile 2 , A. Del Ben 1 1 Dipartimento di Matematica e Geoscienze, University of Trieste, Italy 2 Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Trieste, Italy Introduction. The recent discovery of a diagenetic BSR in the Dove Basin (southern Scotia Sea), suggested us to expand our analysis to other BSRs that have been recognized along some seismic profiles of the Antarctic region. We have focused on the correlation between the origin of the studied BSRs and the different sedimentary and tectonic environments where they developed. In this study we present the analysis of 5 seismic reflection profiles, that have been acquired in Antarctic region by the R/V OGS Explora during the period 1989-1995. All the recognized BSRs mimic the sea bottom topography and cross-cut the seismic reflectors, but the analysis of their seismic characteristics, as amplitude, phase and frequency components, allow to define their nature, i.e. fossil diagenetic due to transformation of Opal A/Opal CT, or gas hydrate. Literature data show evidences of different BSRs in the Antarctic offshore: diagenetic BSRs have been recognized in the Scan Basin of south Scotia Sea (Somoza el al. , 2014), along the eastern margin of the South Orkney microcontinent (Lonsdale, 1990) and in the Antarctic peninsula offshore (Volpi el al. , 2003; Rebesco el al. , 1997); gas hydrate BSRs have been identified in the South Shetland Trench (Lodolo el al. , 2002) and in the Victoria Land Basin (Geletti and Busetti, 2011) in the Ross Sea.