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Reply to comment on the article "Propagation of a lithospheric tear fault (STEP) through the western boundary of the Calabrian accretionary wedge offshore eastern Sicily (Southern Italy)" by Gallais et al., 2013 Tectonophysics

Abstract : In his Comment, A. Argnani argues that our interpretation of the STEP fault (named STEP-1 fault, in the Comment) is poorly constrained by the seismic data used in Gallais et al. (2013), and he particularly disagrees with our identification north of the Alfeo Seamount. A. Argnani is convinced that the tear fault is expressed by a belt of surface deformation, close to the Malta Escarpment. However, none of the seismic images published by A. Argnani show a crustal scale structure that could be associated with the presence at depth of a lithospheric tear. In that paper we documented the presence of a sub-vertical crustal scale fault, located 50 km east of the Malta Escarpment, with a northward increasing vertical offset (Gallais et al., 2013). The track of this fault towards the north could be extended following the position of the fault "F6", mapped 20 km east of the Malta Escarpment by Nicolich et al. (2000). In fact these authors reported an offset of the crust associated with activity of the fault "F6", suggesting that the lithospheric tear at depth at the edge of the Ionian slab is distinct from the Malta Escarpment.
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Flora Gallais, David Graindorge, Marc-André Gutscher. Reply to comment on the article "Propagation of a lithospheric tear fault (STEP) through the western boundary of the Calabrian accretionary wedge offshore eastern Sicily (Southern Italy)" by Gallais et al., 2013 Tectonophysics. Tectonophysics, Elsevier, 2014, 610, pp.200-203. ⟨10.1016/j.tecto.2013.10.012⟩. ⟨insu-00919906⟩

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