Oblique rifting in Salina, Lipari and Vulcano islands (Aeolian islands, southern Italy) |
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Authors: | Roberto Mazzuoli Luigi Tortorici Guido Ventura |
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Affiliation: | Dipartimento di Scienze delta Terra, Universitàdi Pisa, Italy;Istituto di Geologia e Geofisica, Universitàdi Catania, Corso Italia 55, 95129 Catania, Italy;Dipartimento di Scienze delta Terra, Universitàdelta Calabria, 87030 Rende (Cosenza), Italy |
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Abstract: | A structural analysis carried out on the volcanic products of the islands of Salina, Lipari and Vulcano (Aeolian archipelago) points out that the large-scale tectonic setting is dominated by NW-SE trending right-lateral extensional strike-slip faults and by N-S to NE-SW trending normal faults and fractures. This fault pattern generates pull-apart type structures, developing between different right-hand overlapping fault segments and a characteristic extensional imbricate fan geometry at the tip of the major strike-slip faults. All the structures, representing the surface expression of an active crustal discontinuity which controls the evolutionary history of the magmatism of the three islands, are kinematically compatible with a N100°E extension related to a rifting process affecting southern Italy. |
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