Seismic exploration of the deep structure and seismogenic faults in the Ligurian Sea by joint MCS and OBS acquisition: preliminary results of the SEFASILS cruise - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2019

Seismic exploration of the deep structure and seismogenic faults in the Ligurian Sea by joint MCS and OBS acquisition: preliminary results of the SEFASILS cruise

Jean-Xavier Dessa
Marie-Odile Beslier
Laure Schenini
Jacques Déverchère
Christophe Larroque
Mohamed Bachir Miguil
  • Fonction : Auteur
Stéphane Operto
Alessandra Ribodetti
  • Fonction : Auteur
Serge Sambolian
Agurto-Detzel H.
  • Fonction : Auteur
Bulois C.
  • Fonction : Auteur
Combe L.
  • Fonction : Auteur
  • PersonId : 752975
  • IdHAL : laure-combe
Guyavarch P.
  • Fonction : Auteur
Oregioni D.
  • Fonction : Auteur
Prunier C.
  • Fonction : Auteur
Roudaut M.
  • Fonction : Auteur
Trematerra S.
  • Fonction : Auteur
Caroline Chalumeau

Résumé

The north Ligurian margin is a complex geological area on many accounts. It has witnessed several phases of highly contrasting deformation styles, at crustal scale and through shallow cover tectonics, simultaneously or in quick succession, and with significant spatial variability. This complex interplay is mirrored in intricate structures that make it hard to identify active faults responsible for both, the significant seismicity observed and the tectonic inversion undergone by the margin, identified on morphostructural grounds. We present here the first preliminary results of the leg 1 of SEFASILS cruise, conducted in 2018 offshore Monaco, in an effort to answer these questions by means of modern deep seismic acquisitions, using multichannel reflection and wide-angle sea-bottom records. Some first interpretations are provided and point towards an active basement deformation that focuses at the limits between main crustal domains.
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Dates et versions

hal-02381960 , version 1 (26-11-2019)

Identifiants

  • HAL Id : hal-02381960 , version 1

Citer

Jean-Xavier Dessa, Marie-Odile Beslier, Laure Schenini, Nicolas Chamot-Rooke, Nicola Corradi, et al.. Seismic exploration of the deep structure and seismogenic faults in the Ligurian Sea by joint MCS and OBS acquisition: preliminary results of the SEFASILS cruise. IMEKO TC-19 International Workshop on Metrology for the Sea (MetroSea 2019), Oct 2019, Genoa, Italy. p.70-75. ⟨hal-02381960⟩
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