A lithospheric-scale seismogenic thrust in central Italy

Rates of active compressional deformation in central Italy and Sicily: evaluation of the seismic budget

“…Whereas the geometry and dimension of the intra-Apennine extensional process are fairly well agreed in the literature, active compression at the front of the Apennine fold and thrust belt of Italy is a highly debated topic, especially in terms of spatial continuity and amplitude (Frepoli and Amato 1997;Coward et al 1999;Finetti et al 2001;Di Bucci and Mazzoli 2002;Savelli et al 2002;Lavecchia et al 2003;Vannoli et al 2004;Pondrelli et al 2006;Lavecchia et al 2007a, b;Boncio and Bracone 2008).…”

Magmatectonic Zonation of Italy: A Tool to Understanding Mediterranean Geodynamics

“…5. Schematic block diagram across central Italy illustrating the present-day crustal and lithospheric structure and the relationships between the surface distribution of the various igneous provinces and magma types and the inferred mantle location of their parental melts (after Lavecchia and Stoppa, 1996;Lavecchia et al, 2003). Key: RCP = Roman-Campanian Province; IUP = Intramontane Ultra-Alkaline Province; PPN = Punta delle Pietre Nere.…”

“…The volume of the entire Apennine crust in Calabria is smaller than the volume of the upper crust that would be involved in the formation of an accretionary prism, assuming that the upper crust had been scraped off during subduction (Doglioni et al, 1999). In general, the compressional structures of both the central and the southern Apennines do not show the thin-skinned geometries typical of subduction-related complexes, but rather they are characterized by a thick-skinned style, typical of ensialic deformations, with basement largely involved in the deformation and with only limited amounts of horizontal shortening (van Dijk et al, 2000;Barchi et al, 2001;Noguera and Rea, 2000;Lavecchia et al, 2003). Tomographic models of the mantle beneath the Apennines and the Tyrrhenian show the presence of a highly discontinuous, intra-asthenosphere, high-velocity body, usually assumed to be the Ionian lithosphere subducted in the course of the Apennine compressional phase, but images a r e v e ry d i f f e r e n t i n l e n g th, position and continuity (Spakman et al, 1993;Cimini and De Gori, 2001;Piromallo and Morelli, 2003;Piromallo and Faccenna, 2004).…”

“…b) The section shows a schematic view of the crustal and lithospheric structure of the Ligurian and Tyrrhenian "wide-rift" basins; the trace of the section is given in the map. The European and the Adriatic lithospheric domains are distinguished with different colours; the Moho discontinuity (white dashed line) is from Locardi and Nicolich (1988); the lithosphere thickness is from Suhadolc et al (1990); the adopted structural style is from Lavecchia and Stoppa (1989) and Lavecchia et al (2003). Fig.…”

Tectonics and quaternary evolution of the Northern Apennines watershed area (upper course of Arno and Tiber rivers, Italy)

“…In the interpretation proposed by Barchi et al (1998), the E-dipping normal faults are instead restricted to the upper crust, and the lithosphere is of the Alto Tiberina normal fault. In most interpretations, this structure is imaged to displace the crustal thrusts, thereby to postdate the thrust activity (Barchi et al 1998;Boncio et al 2000;Lavecchia et al 2003). In the interpretation of Finetti et al (2001), this normal fault is instead interpreted to accommodate the uplift of a basement high associated with the crustal antiformal wedge generated by the imbrication of W-dipping lithospheric thrusts.…”