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Structural architecture and active deformation pattern in the northern sector of the Aeolian-Tindari-Letojanni fault system (SE Tyrrhenian Sea-NE Sicily) from integrated analysis of field, marine geophysical, seismological and geodetic data (2017)

Cultrera, Fabrizio ; Barreca, Giovanni ; Ferranti, Luigi ; [et al.]

Società Geologica Italiana

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Publication Date: 2017-07-31

Description: Framed in the current geodynamics of the central Mediterranean, the Aeolian-Tindari-Letojanni fault system is part of a wider NW-SE oriented right-lateral wrench zone which accommodates diverging motion between regional-scale blocks located at the southern edge of the Calabrian Arc. In order to investigate the structural architecture and the active deformation pattern of the northern sector of this tectonic feature, structural observations on-land, high and very-high resolution seismic reflection profiles, swath bathymetry and seismological and geodetic data were merged from the Lipari-Vulcano volcanic complex (central sector of the Aeolian Islands) to the Peloritani Mountains across the Gulf of Patti. Our interpretation shows that the active deformation pattern of the study area is currently expressed by NW-SE trending, right-transtensional én-echelon fault segments whose overlapping gives rise to releasing stepover and pull-apart structures. This structural architecture has favored magma and fluid ascent and the shaping of the Lipari-Vulcano volcanic complex. Similarly, the Gulf of Patti is interpreted as an extensional relay zone between two overlapping, right-lateral NW-SE trending master faults. The structural configuration we reconstruct is also supported by seismological and geodetic data which are consistent with kinematics of the mapped faults. Notably, most of the low-magnitude instrumental seismicity occurs within the relay zones, whilst the largest historical earthquakes (1786, Mw=6.2; 1978, Mw=6.1) are located along the major fault segments.

Description: Published

Description: 399-417

Description: 1T. Deformazione crostale attiva

Description: JCR Journal

Keywords: Southern Tyrrhenian sea ; NE Sicily ; seismic reflection profiles ; structural analysis ; seismology ; GPS ; 04.04. Geology ; 04.07. Tectonophysics

Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)

Type: article

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OR1.3 Reportistica dei survey effettuati nel Mar Tirreno sud-orientale e Canale di Sicilia: dati disponibili per OR1 (2022)

Passaro, Salvatore ; Caccavale, Mauro ; Tamburrino, Stella ; [et al.]

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Publication Date: 2022-02-28

Description: In questo report vengono presentati i dati disponibili per la realizzazione delle attività di OR1 del progetto Marine Hazard (geofisica, campionature di sedimento e dati chimico-fisici della colonna d’acqua). I datasets presentati derivano da campagne oceanografiche eseguite dal CNR nel mar Tirreno SE (Semounts Marsili e Palinuro, alti relativi del fondo mare dell’Arco Eoliano) con focus sulla catena vulcanica del Palinuro (Seamounts Palinuro, Glabro, Enotrio, Ovidio). Vengono introdotte, quindi, le rappresentazioni cartografiche dei datasets batimetrici, side scan sonar, campionature del fondo, dati magnetici e dati sismici a riflessione già disponibile e in fase di elaborazione.

Description: CNR-INGV

Description: Published

Description: 1T. Struttura della Terra

Description: 4IT. Banche dati

Keywords: Marine Hazard, Canale di Sicilia, Mar Tirreno, Campagne Oceanografiche ; OR1.3 Reportistica dei survey effettuati nel Mar Tirreno sud-orientale e Canale di Sicilia: dati disponibili per OR1