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| Gallais, Flora; Graindorge, David; Gutscher, Marc-andre; Klaeschen, Dirk. |
| The rollback of a segmented slab of oceanic lithosphere is typically accompanied by vertical lithospheric tear fault(s) along the lateral slab edge(s) and by strike slip movement in the upper plate, defined as a STEP fault (Subduction Tear Edge Propagator). The Neogene evolution of the Central Mediterranean is dominated by the interaction between the slow Africa–Eurasia convergence and the SE-ward rollback of the Ionian slab, that leads to the back-arc opening of the Tyrrhenian Sea. Here, we present post-stack time migrated and pre-stack depth migrated Archimede (1997) multichannel seismic lines, that were acquired offshore eastern Sicily, at the foot of the Malta escarpment. First, we identify the recent deformation along the lateral ramp of the Calabrian... |
| Tipo: Text |
Palavras-chave: Tear fault; Rollback; Accretion; Multi-channel seismic reflection. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00118/22878/21386.pdf |
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| Dannowski, Anke; Kopp, Heidrun; Klingelhoefer, Frauke; Klaeschen, Dirk; Gutscher, Marc-andre; Krabbenhoeft, Anne; Dellong, David; Rovere, Mickael; Graindorge, David; Papenberg, Cord; Klaucke, Ingo. |
| The nature of the Ionian Sea crust has been the subject of scientific debate for more than 30 years, mainly because seismic imaging of the deep crust and upper mantle of the Ionian Abyssal Plain (IAP) has not been conclusive to date. The IAP is sandwiched between the Calabrian and Hellenic subduction zones in the central Mediterranean. To univocally confirm the proposed oceanic nature of the IAP crust as a remnant of the Tethys ocean and to confute its interpretation as a strongly thinned part of the African continental crust, a NE-SW oriented 131 km long seismic refraction and wide-angle reflection profile consisting of eight ocean bottom seismometers and hydrophones was acquired in 2014. A P-wave velocity model developed from travel time forward... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00473/58431/61006.pdf |
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| Martinez-loriente, Sara; Gracia, Eulalia; Bartolome, Rafael; Sallares, Valenti; Connors, Christopher; Perea, Hector; Lo Iacono, Claudio; Klaeschen, Dirk; Terrinha, Pedro; Jose Danobeitia, Juan; Zitellini, Nevio. |
| Recently acquired high-resolution multichannel seismic profiles together with bathymetric and sub-bottom profiler data from the external part of the Gulf of Cadiz (Iberia-Africa plate boundary) reveal active deformation involving old (Mesozoic) oceanic lithosphere. This area is located 180 km offshore the SW Iberian Peninsula and embraces the prominent NE-SW trending Coral Patch Ridge, and part of the surrounding deep Horseshoe and Seine abyssal plains. E-W trending dextral strike-slip faults showing surface deformation of flower-like structures predominate in the Horseshoe Abyssal Plain, whereas NE-SW trending compressive structures prevail in the Coral Patch Ridge and Seine Hills. Although the Coral Patch Ridge region is characterized by subdued seismic... |
| Tipo: Text |
Palavras-chave: Multichannel seismics; Fault-bend folds; Blind thrusts; Strike-slip faults; Seismic hazard assessment; Iberia-Africa boundary. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00264/37513/36759.pdf |
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