1,721,142 research outputs found

    Data extraction from vintage well sonic log graphs in the ViDEPI project (offshore the Apulia, southern Italy): A multi-useful dataset

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    Twelve files have been obtained after the extraction of data from raster PDF images of sonic log graphs. These files data regard exploration wells placed in the Adriatic Sea pertaining the Apulia (Branzino-1, Chiara-1, Cristina-1, Famoso-1, Giove-1, Giove-2, Grazia-1, Grifone-1, Medusa-1, Sabrina-1, Simona-1, and Sparviero-1bis), and the related raster sonic log graphs are free accessible at the ViDEPI Project (www.videpi.com) of the Ministry for the Economic Development of the Italian Government. Two columns A and B of data, i.e., interval transit time Δt [μs/ft] and depth [m], respectively, characterise each file. Hence, 18,396 pairs of Δt-depth values have been obtained. The picking of the data occurred by the use of WebPlotDigitizer© free software. These data are relevant for the interpretation of reflection seismic lines throughout the Adriatic Sea, mainly in the offshore the Apulia. Moreover, the interpretation of those reflection seismic lines located in the adjacent offshore zones, such as the Ionian Sea, can benefit from these data; the values can be important for seismological goals around the Apulia, as well. From these data, Δt-depth diagrams can be originated by the use of software capable of building 2D graphs from values in CSV files (e.g. Matlab©)

    The Curinga–Girifalco Line in the framework of the tectonic evolution of the remnant Alpine chain in Calabria (southern Italy)

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    In the peri-Mediterranean metamorphic belts, the tectonic evolution of the Calabria–Peloritani terrane during the dominant compressive tectonics of the Eocene represents one of the most problematic points in palinspastic restorations. A matter of particular debate is its shortening, which could have occurred during the Alpine or the Apennine subduction. In this regard, a crucial joint is provided by the kinematics of one of the most relevant shear zones such as the Curinga–Girifalco Line, cropping out in central Calabria. This shear zone juxtaposed a nearly complete Hercynian crustal section (i.e. the Sila and Serre Unit) onto the remnants of the Castagna Unit. The data in the available literature on ductile kinematics from the south-eastern branch of the Curinga–Girifalco Line indicate a downward movement of the hanging wall. In the present paper we show new, ductile kinematic data and petrographic evidence from outcrops in the north-western and south-eastern branches of the Curinga–Girifalco Line. Our results highlight the coherent kinematics of the Eocene shortening during the Alpine subduction system, followed by (late Eocene?)Oligocene to early Miocene, dominantly ductile extensional reworking, relating to the Apennines subduction system
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