Middle to Late Pleistocene activity of the northern Matese fault system (southern Apennines, Italy)

Paolo Galli, Biagio Giaccio, Paolo Messina, Edoardo Peronace, Vincenzo Amato, Giuseppe Naso, Sebastian Nomade, Alison Pereira, Sabatino Piscitelli, Jessica Bellanova, Andrea Billi, Dominique Blamart, Antonio Galderisi, Alessandro Giocoli, Tony Stabile, Francoise Thil

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Abstract

An integrated investigation including geological, geomorphological, geophysical and structural survey, tephra analyses,14C and40Ar/39Ar dating, as well as paleoseismic trenching along the N-Matese fault system is presented. The study allowed the characterization of the tectonic mobility of this structure as well as the associated Bojano basin sedimentary-tectonic evolution since the early Middle Pleistocene, providing also new clues concerning the fault historical activity and the associated Mw > 6.5 earthquakes. We have found lines of evidence for > 1 mm/yr slip rate along the presently buried Bojano fault during the mid Middle Pleistocene, and similar rates for the main fault segments paralleling the Matese flanks. The buried Bojano fault significantly slowed down during the last 300 kyr, ceasing its activity before the Holocene. In turn, the segments outcropping along the Matese flanks reactivated at the onset of Late Pleistocene, after a long period of quiescence (480–110 ka), with robust slip rates that would seem even accelerating in post LGM times. Paleoseismic data suggest the occurrence of four Mw > 6.6 earthquakes in the past 3 ka, three of which match the little known 280 BC event, and the devastating 1456 and 1805 earthquakes.
Original languageEnglish
Pages (from-to)61 - 81
Number of pages21
JournalTectonophysics
Volume699
DOIs
Publication statusPublished - 15 Mar 2017

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All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth-Surface Processes

Cite this

Galli, P., Giaccio, B., Messina, P., Peronace, E., Amato, V., Naso, G., Nomade, S., Pereira, A., Piscitelli, S., Bellanova, J., Billi, A., Blamart, D., Galderisi, A., Giocoli, A., Stabile, T., & Thil, F. (2017). Middle to Late Pleistocene activity of the northern Matese fault system (southern Apennines, Italy). Tectonophysics, 699, 61 - 81. https://doi.org/10.1016/j.tecto.2017.01.007