Abstract
The VST02 cruise carried out in the summer of 2002 focused on sedimentologic and volcanologic research over selected areas of the deep portion of the Tyrrhenian Sea. Chirp lines and seafloor samples were collected from the Calabrian slope surrounding Stromboli Island, in the Marsili deep-sea fan, in the Vavilov Basin and in the Vavilov seamount. Submarine volcanic activity, both explosive and effusive, is occurring in the Stromboli edi- fice. Explosive submarine volcanism also affects the shallowest areas of the Vavilov seamount. Submarine car- bonate lithification has been observed on the sediment-starved flanks of the Vavilov seamount. Acoustic trans- parent layers make up the recentmost infill of the Gortani Basin, the easternmost portion of the Vavilov Basin. Channels comprised of a variety of architectural elements and depositional lobes are the main elements of the Marsili deep-sea fan where, apparently, sedimentation occurs mainly through debris flow processes.
Highlights
The VST02 cruise carried out in the summer of 2002 focused on sedimentologic and volcanologic research over selected areas of the deep portion of the Tyrrhenian Sea
In the Central Tyrrhenian Sea, the cruise focused on the study of the Vavilov Basin and the homonymous volcanic seamount that sits in its centre
The research topics, the relevant areas to investigate during the cruise, the techniques of data acquisition and the research methodology were mainly planned on the basis of a preparatory interpretation of multibeam echosounder bathymetric data, deep-towed sidescan sonar images and seismic lines already available at the Istituto di Scienze Marine (ISMAR)
Summary
The VST02 cruise, carried out on board the R/V Urania from 29 August to 19 September 2002, focused on the study of sedimentologic and volcanologic issues through the investigation of selected areas in the southeastern and central portion of the Tyrrhenian Sea (fig. 1). The VST02 cruise, carried out on board the R/V Urania from 29 August to 19 September 2002, focused on the study of sedimentologic and volcanologic issues through the investigation of selected areas in the southeastern and central portion of the Tyrrhenian Sea In the Central Tyrrhenian Sea, the cruise focused on the study of the Vavilov Basin and the homonymous volcanic seamount that sits in its centre. Ples from the different volcanic elements that compose the seamount. The expected result, through geochemical study of lava samples, is the framing of the Vavilov seamount volcanism in the geodynamic evolution of the Tyrrhenian Sea. In addition, high resolution seismic lines and gravity-core samples were collected in the Vavilov abyssal plain with the aim of deciphering the processes that contribute to its recent sedimentary infill. The description and interpretation of the acquired data, as deduced by on board observations, are illustrated together with a presentation of the preliminary results
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