To the north of Sicily, Italy, the south-Tyrrhenian region includes the transition from the Vavilov and Marsili oceanic backarc basins, to the north, to the inner Maghrebian-Calabrian thrust-fold belt, to the south. Since about mid-Pleistocene time, the tectonic activity along the frontal thrusts of this south-verging belt have come to a substantial end or pause and tectonic compression has resumed at the back of the orogenic wedge in the south-Tyrrhenian region. This recently-resumed compression is well revealed by an E-W-oriented compressional seismic belt. Several features, which are the prerequisite to interpret the future tectonic evolution of this belt, remain, however, to be better constrained. For instance, it is unclear whether the south-Tyrrhenian compression is presently activating north-verging thrusts, which may represent the southward subduction onset for the Tyrrhenian backarc basin, or it is simply reactivating south-verging thrusts at the rear of the orogenic wedge. Based on previous tectonic studies of the south-Tyrrhenian region, we have made several assumptions on the present tectonic architecture, and have run a series of numerical tests to envisage possible future scenarios of this segment of the Africa-Eurasia boundary. We have computed the present-day deformation in the southern Tyrrhenian area, integrating recent GPS velocities, and global relative plate motions, with the contribution of the main tectonic features, such as active faults and deformation zones. We have used finite element methods on a well- adapted grid, built with appropriate dimension to avoid boundary effects. With a set of numerical experiments, we have obtained preliminary results, being useful to characterise a complex setting in the south-Tyrrhenian region, where different tectonic activities probably produce coexisting effects, in the context of the Africa-Eurasia plate boundary.
The south-Tyrrhenian seismically-active compressional belt: preliminary results from numerical modeling / Petricca, Patrizio; M., Cuffaro; Carminati, Eugenio Ambrogio Maria; A., Billi; Doglioni, Carlo. - ELETTRONICO. - --(2013), pp. -----. ((Intervento presentato al convegno 9th TOPO- EUROPE Workshop nel 9-11 ottobre.
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|Titolo:||The south-Tyrrhenian seismically-active compressional belt: preliminary results from numerical modeling|
|Data di pubblicazione:||2013|
|Citazione:||The south-Tyrrhenian seismically-active compressional belt: preliminary results from numerical modeling / Petricca, Patrizio; M., Cuffaro; Carminati, Eugenio Ambrogio Maria; A., Billi; Doglioni, Carlo. - ELETTRONICO. - --(2013), pp. -----. ((Intervento presentato al convegno 9th TOPO- EUROPE Workshop nel 9-11 ottobre.|
|Appartiene alla tipologia:||04a Atto di comunicazione a congresso|