Lithospheric fault and kinematic decoupling of the Apennines system across the Pollino range
- Autor(en)
- Claudio Chiarabba, Nicola Piana Agostinetti, Irene Bianchi
- Abstrakt
A persistent seismic gap is hypothesized in the Pollino area (southern Italy), at the boundary between the Apennines and the Calabrian arc. Presently, seismic swarms are active in the gap area, creating concerns for possible future large earthquakes. In this study, we model the deep Earth structure across the Pollino range to give new insights on the kinematics and tectonics of this enigmatic area. Migrated receiver function profiles show a subvertical lithospheric discontinuity, delineated by an abrupt change in Moho depth and mantle fabrics across the range. The lithospheric-scale discontinuity bounds the area of earthquake swarm activity and likely decouples the delamination-related extension of the Apennines from the extensional collapse of the Calabrian fore arc. This large-scale discontinuity implies that the normal faults are segmented across the range, limiting the lateral extent of faults where future earthquakes might occur.
- Organisation(en)
- Institut für Meteorologie und Geophysik
- Externe Organisation(en)
- Istituto Nazionale di Fisica Nucleare (INFN), Roma, Dublin Institute for Advanced Studies
- Journal
- Geophysical Research Letters
- Band
- 43
- Seiten
- 3201-3207
- Anzahl der Seiten
- 7
- ISSN
- 0094-8276
- DOI
- https://doi.org/10.1002/2015GL067610
- Publikationsdatum
- 04-2016
- Peer-reviewed
- Ja
- ÖFOS 2012
- 105126 Angewandte Geophysik, 105122 Seismik, 105124 Tektonik, 105102 Allgemeine Geophysik
- Schlagwörter
- ASJC Scopus Sachgebiete
- Geophysics, Earth and Planetary Sciences(all)
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/lithospheric-fault-and-kinematic-decoupling-of-the-apennines-system-across-the-pollino-range(a9a299fe-3c1f-43c1-8ee8-4e7f12fb7c80).html