Wide-angle images of the Mediterranean Ridge backstop structure

Slab segmentation controls the interplate slip motion in the SW Hellenic subduction: New insight from the 2008Mw 6.8 Methoni interplate earthquake

“…A clear positive marker, which can be tentatively interpreted as the lower plate Moho, is obtained from each OBS (Figure b and Text S2). The slab Moho beneath OBSK2 is observed at 22 km depth (bottom of Figure b), like the depth derived from ESP 9 by Jones et al []. The other three OBSs show a slab Moho at 27 km (N6), 35 km (J6) and 40 km (K6) respectively (Figure b middle).…”

“…However, there have been no structural constraints yet on the location and depth of the interplate boundary to support such hypothesis. The only information comes from multichannel seismic refraction expanded spread profiles (ESP) and ocean bottom hydrophone wide angle and refraction modeling [ De Voogd et al , ; Truffert et al , ; Jones et al , ]. These authors identified the top of the subducting crust beneath ESP 9 (Figure a) at a depth of 14 km, under a 4 km water layer and a 10 km thin wedge of upper plate crust [ Jones et al ., ].…”

“…The only information comes from multichannel seismic refraction expanded spread profiles (ESP) and ocean bottom hydrophone wide angle and refraction modeling [ De Voogd et al , ; Truffert et al , ; Jones et al , ]. These authors identified the top of the subducting crust beneath ESP 9 (Figure a) at a depth of 14 km, under a 4 km water layer and a 10 km thin wedge of upper plate crust [ Jones et al ., ]. The latter persists for more than 50–100 km southward to form the backstop of the Mediterranean Ridge (MR) accretionary prism [ Truffert et al , ; Chamot‐Rooke et al , ].…”

The oceanic nature of the African slab subducted under Peloponnesus: thin-layer resolution from multiscale analysis of teleseismic P-to-S converted waves

“…1) and OBH wide‐angle and refraction modelling have identified the interplate boundary at 14 km depth. The top of the subducting plate is interpreted as comprising sediments of only 1–2 km thickness, remaining above the igneous oceanic crust (de Voogd et al 1992; Truffert et al 1993; Jones et al 2002). This suggests that the slab subduction may not entrain an important thickness of sediments on top the igneous oceanic crust.…”

Velocity models inferred from p-waves travel time curves in south Aegean

“…Five seismic lines along the Cretan and Libyan Seas (Bohnhoff et al 2001, Makris and Brönner 2001, Brönner 2003 as well as results from Expanding Spread Profiles analysis in the western Mediterranean (de Voogd et al 1992, Truffert et al 1993, Fruehn et al 2002, Jones et al 2002 provided detailed information about the structure of the deep basins and crust below Crete and at the collision front between the Aegean microplate and the oceanic lithosphère of the African plate. Additionally, the 20 reflection profiles which were shot along a 50 km-wide corridor across the western Mediterranean Ridge in the framework of the International Mediterranean Ridge Seismic Experiment, IMERSE (Fruehn et al 2002) and the Seismic study of the Mediterranean tectono-sedimentary prism, PRISMED surveys (Chaumillon andMascle 1997.…”