GNGTS 2019 - Atti del 38° Convegno Nazionale

GNGTS 2019 S essione 1.2 161 Monaco, C. and Tortorici, L.; 2000: Active faulting in the Calabrian Arc and easternSicily. J. Geodyn. 29, 407–424. Monaco C., Tortorici L., Cernobori L., Nicolich R. and Costa M.;1996: From collisional to rifted basins: an example from the southern Calabrian Arc (Italy). Tectonophysics, 266, 233-249. Tansi, C., Muto, F., Critelli, S. and Iovine, G.; 2007: Neogene-Quaternary strike-sliptectonics in the central Calabria Arc (southern Italy). J. Geodyn. 43, 397–414. Tripodi, V., Muto, F. and Critelli, S.;2013: Structural style and tectono-stratigraphicevolution of the Neogene- Quaternary Siderno Basin, southern Calabrian Arc,Italy. Int. Geol. Rev. 4, 468–481. Tripodi, V., Muto, F., Brutto, F., Perri, F. and Critelli, S.; 2018: Neogene-Quaternary evolution of the forearc and backarc regions between the Serre and Aspromonte Massifs, Calabria (southern Italy). Marine and Petroleum Geology. Wortel, R. and Spakman, W.; 2000: Subduction and slab detachment in theMediterranean-Carpathian region. Science 290, 1910–1917. THE MESSINIAN LAYER IN THE CENTRAL ADRIATIC SEA N. Venisse 1,2 , A. Lanzoni 1 , A. Del Ben 1 1 DMG, University of Trieste, Italy 2 Previous address: University of Lille, France. Current address: École Normale Supérieure, Paris, France Introduction. This work is the result of an internship (24 June-23August 2019) at the DMG of the University of Trieste (Italy) of the first author, in the context of an agreement with the University of Lille (France). Theme of the internship was “Seismic interpretation in the Central Adriatic area, focusing on the Messinian age and the compressive deformation of the frontal Apennine Chain affecting the Plio-Quaternary sequence” (Fig.1). It represents part of a more regional study on the distribution in the whole Adriatic Sea of the main structures (thrust faulting, margins of carbonate platforms and presence of isolated platforms), on the main erosional event and/or deposition of evaporite during the Messinian Salinity Crisis (MSC) and on the Plio-Quaternary deformation that affected the MSC marker. The research took advantage of the availability of a large amount of seismic and boreholes data in the study area. From a geological point of view, the MSC was a very short event (5.96-5.33Ma) involving the whole Mediterranean Sea, resulted from the closure of marine gateways between theAtlantic Ocean and the Mediterranean Sea (Duggen, 2003). It represents the most dramatic events on earth related to oceanic change during the Cenozoic era (Krijgsman et al. , 1999). The large fall in the Mediterranean water level was followed by important erosion on the continental margins and deposition of evaporitic sediments that in the Adriatic Basin are represented by a typical sequence, called Gessoso-Solfifera Formation. The Plio-Quaternary tectonic events affected the Central Adriatic Sea in a role of Apennine foreland, producing its westward tilting and partial deformation in thrust faults. Data and methods. In this work the main part of the public profiles and boreholes available on the Snap (https://snap.ogs.trieste.it ) and ViDEPI (www.videpi.com ) datasets of the “Zone B” (Fig. 1) have been utilized. With the free multi-platform software SedLog package, developed by the Royal Halloway University of London, the graphic sediment logs were used to synthetize the borehole information and to create a file that has been successively exported in the Move platform of Midland Valley: it is a powerful stand-alone environment that can be used for 2D cross-section construction, 3D model building, data integration and analysis (Move Tutorials, 00_Overview of the Move Tutorials, 2017). Surface with Delauney Triangulation (that generates surfaces by fitting circles or spheres to points) and Ordinary Kriging (that generates surfaces by interpolating a grid