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<title lang=en>Tectonic expression of an active slab tear from high-resolution seismic and bathymetric data offshore Sicily (Ionian Sea)</title>
<creator>Gutscher, Marc-André, </creator>
<creator>Dominguez, Stephane</creator>
<creator>Mercier De Lepinay, Bernard</creator>
<creator>Pinheiro, Luis</creator>
<creator>Gallais, Flora</creator>
<creator>Babonneau, Nathalie</creator>
<creator>Cattaneo, Antonio</creator>
<creator>Le Faou, Yann</creator>
<creator>Barreca, Giovanni</creator>
<creator>Micallef, Aaron</creator>
<creator>Rovere, Marzia</creator>
<contributor>Domaines Océaniques (LDO) ; Institut national des sciences de l'Univers (INSU - CNRS) - Université de Brest (UBO) - Observatoire des Sciences de l'Univers - Institut d'écologie et environnement - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Géoazur (GEOAZUR) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Université Nice Sophia Antipolis (UNS) ; Université Côte d'Azur (UCA) - Université Côte d'Azur (UCA) - Institut national des sciences de l'Univers (INSU - CNRS) - Observatoire de la Côte d'Azur - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Centre for Environment and Marine Studies (CESAM) ; University of Aveiro</contributor>
<contributor>Unité de recherche Géosciences Marines (Ifremer) (GM) ; Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)</contributor>
<contributor>Service Hydrographique et Océanographique de la Marine (SHOM) ; Ministère de la Défense</contributor>
<contributor>Department of biology, Geology and Environmental Science ; University of Catania [Italy]</contributor>
<contributor>University of Malta [Malta]</contributor>
<contributor>Institute for marine sciences ; Consiglio Nazionale delle Ricerche [Roma] (CNR)</contributor>
<description>International audience</description>
<source>ISSN: 0278-7407</source>
<source>Tectonics</source>
<publisher>American Geophysical Union (AGU)</publisher>
<identifier>insu-01256887</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-01256887</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-01256887/document</identifier>
<identifier>https://hal-insu.archives-ouvertes.fr/insu-01256887/file/GutscherEtal_2015_Tectonics.pdf</identifier>
<source>https://hal-insu.archives-ouvertes.fr/insu-01256887</source>
<source>Tectonics, American Geophysical Union (AGU), 2016, 34, 〈10.1002/2015TC003898〉</source>
<identifier>DOI : 10.1002/2015TC003898</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1002/2015TC003898</relation>
<language>en</language>
<subject>[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Subduction of a narrow slab of oceanic lithosphere beneath a tightly curved orogenic arc requires the presence of at least one lithospheric scale tear fault. While the Calabrian subduction beneath southern Italy is considered to be the type example of this geodynamic setting, the geometry, kinematics and surface expression of the associated lateral, slab tear fault offshore eastern Sicily remain controversial. Results from a new marine geophysical survey conducted in the Ionian Sea, using high-resolution bathymetry and seismic profiling reveal active faulting at the seafloor within a 140 km long, two-branched fault system near Alfeo Seamount. The previously unidentified 60 km long NW trending North Alfeo Fault system shows primarily strike-slip kinematics as indicated by the morphology and steep-dipping transpressional and transtensional faults. Available earthquake focal mechanisms indicate dextral strike-slip motion along this fault segment. The 80 km long SSE trending South Alfeo fault system is expressed by one or two steeply dipping normal faults, bounding the western side of a 500+ m thick, 5 km wide, elongate, syntectonic Plio-Quaternary sedimentary basin. Both branches of the fault system are mechanically capable of generating magnitude 6–7 earthquakes like those that struck eastern Sicily in 1169, 1542, and 1693.</description>
<date>2016-01-06</date>
<contributor>European Project : ENV2013 6.4-3, ASTARTE</contributor>
<relation>info:eu-repo/grantAgreement//ENV2013 6.4-3/EU/FP7 ASTARTE/ASTARTE</relation>
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