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Geophysical prospecting on the Santorini Islands

Authors:	G Budetta D Condarelli M Fytikas N Kolios G Pascale A Rapolla E Pinna

Institution:	1. Istituto Internazionale di Vulcanologia, CNR, Catania, Italy 2. IGME — Institute of Geology and Mineral Exploration, Athens, Greece 3. Dipartimento di Geofisica e Vulcanologia, University of Naples, Italy 4. Dipartimento di Scienze della Terra, University of Pisa, Italy

Abstract:	A program of geophysical research was carried out as a preliminary stage of study of the Santorini volcanic group. This area is of remarkable geothermal and volcanological interest, and the definition of a volcanological structural model is the starting point for an understanding of the local geodynamic processes. Gravity, magnetic and geoelectrical data proved that: the core of the volcanic edifice consists of a sedimentary-metamorphic basement; the basement is tectonically disturbed and a linear tectonic system produces a graben-type structure in the middle part of the area.

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