The southern Tyrrhenian subduction zone: Deep geometry, magmatism and Plio-Pleistocene evolution

Low slip rates and multimillennial return times for Mw 7 earthquake faults in southern Calabria (Italy)

“…CA formed during the Neogene as a consequence of NW subduction and SE trench rollback of a remnant of the Ionian lithosphere beneath Eurasia [Malinverno and Ryan, 1986;Patacca et al, 1990], and it is currently migrating relative to Ionian lithosphere with 2 mm/yr of convergence absorbed in the Ionian wedge ( Figure 1, inset A) [D'Agostino et al, 2011]. The subducting Ionian slab in the southern Tyrrhenian Sea is well depicted by both a Benjoff plain [Peterschmitt, 1956;Chiarabba et al, 2008] and by seismic tomography [Piromallo and Morelli, 2003]. Minelli and Faccenna [2010] hypothesize that the strong Quaternary uplift of the CA, as shown by impressive staircases of marine terraces [Miyauchi et al, 1994], is due to underplating of Ionian sediments in the last 2 Myr when, contemporary to the outward migration of the arc, the back-arc opening of the Marsili basin and the frontal bulk deformation of the outer Ionian wedge took place.…”

Tectonic evolution of the Sicilian Thrust System (central Mediterranean)

“…were de formed from the Oligocene to the Late Miocene; an extensional set ting de vel oped dur ing the Late Mio cene-Early Plio cene, al low ing the de po si tion of evaporites and deep-wa ter marls (Trubi Fm. ); these con di tions al lowed re newed de for ma tion of the Imerese-Sicanian and pre vi ous foredeep de pos its ("Gela Nappe em place ment; mod i fied af ter Nigro and Renda, 2000); Ge -"Gela Nappe", Ib -Hyblean-Pelagian, Is -Imerese-Sicanian, Pa -Panormide, Pl -Peloritani, Si -Sicilide Liguro-Provençal oce anic spread ing phase (Faccenna et al, , 2005Cifelli et al, 2007;Mattei et al, 2007;Chiarabba et al, 2008) and the Late Mio cene and the Pleis to cene, dur ing the open ing of the Tyrrhenian Sea. Be tween 15 and 10 Ma, the re treat dras ti cally de cel er ated .…”

Magmatectonic Zonation of Italy: A Tool to Understanding Mediterranean Geodynamics

“…It is evident that the Aeolian magma sources do not form a more or less continuous linear zone at a constant depth along the top of the subduction zone, as should be if they were connected to a down-going slab (Moores and Twiss, 1995). Available focal mechanisms associated with the STBP show a predominant normal-faulting kinematics (Chiarabba et al, 2008). T-axes turn in azimuth perpendicularly to the slab direction and P-axes are usually parallel to the average plane dip direction (blue and red arrows in Fig.…”