Evidence for late Alpine tectonics in the Lake Garda area (northern Italy) and seismogenic implications (Articolo in rivista)

Type
Label
  • Evidence for late Alpine tectonics in the Lake Garda area (northern Italy) and seismogenic implications (Articolo in rivista) (literal)
Anno
  • 2015-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1130/B30990.1 (literal)
Alternative label
  • SCARDIA G., FESTA A., MONEGATO G., PINI R., ROGLEDI S., TREMOLADA F., GALADINI F. (2015)
    Evidence for late Alpine tectonics in the Lake Garda area (northern Italy) and seismogenic implications
    in Geological Society of America bulletin
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • SCARDIA G., FESTA A., MONEGATO G., PINI R., ROGLEDI S., TREMOLADA F., GALADINI F. (literal)
Pagina inizio
  • 113 (literal)
Pagina fine
  • 130 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 127 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1-2 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto di Geologia Ambientale e Geoingegneria, CNR, via Salaria km 29.300, I-00016 Monterotondo Scalo (Roma), Italy Dipartimento di Scienze della Terra, Università di Torino, Via Valperga Caluso 35, I-10125 Torino, Italy Istituto di Geoscienze e Georisorse, CNR, via Valperga Caluso 35, I-10123 Torino, Italy Istituto per la Dinamica dei Processi Ambientali, CNR, Piazza della Scienza 1, I-20126 Milano, Italy ENI E&P, via Emilia 1, I-20097 San Donato Milanese, Italy RPS Energy, Goldsworth House, Denton Way, Goldsworth Park, GU213LG Woking, UK Istituto Nazionale di Geofi sica e Vulcanologia, via di Vigna Murata 605, I-00143 Roma, Italy (literal)
Titolo
  • Evidence for late Alpine tectonics in the Lake Garda area (northern Italy) and seismogenic implications (literal)
Abstract
  • We investigated the recent evolution of the Po Plain-Alps system by integrating subsurface geophysical data from the Po Plain with new stratigraphic and structural observations from the Southern Alps margin. Inversion of structural data and chronology provided by stratigraphic constraints led to the definition of three tectonic events since the Pliocene, namely, the intra-Zanclean, the Gelasian, and the Middle Pleistocene, driven by an axis of maximum compression formerly oriented NE (intra-Zanclean) and then to the NNW (Gelasian and Middle Pleistocene). The associated deformation has been accommodated by two sets of faults consisting of NNE-trending thrust faults, mostly represented in the western sector of Lake Garda, and NW-trending strike-slip faults, observed in the southern and eastern sectors. The interplay between these two sets of faults is interpreted to produce short (<10 km length) thrust ramps activated in left transpression, bounded by longer (30-60 km) transfer faults activated in a right-lateral strike-slip motion. Based on this structural model, we infer moderate seismicity (Mw < 6) associated with the NE-directed thrusts and stronger earthquakes (also Mw >6.5) along the NW-trending strike-slip faults. In this framework, the newly defi ned Nogara fault and the Sant'Ambrogio fault, all pertaining to the NW-trending system, are regarded as potential candidates for the seismogenic source of the January A.D. 1117 event, the most destructive earthquake in the Po Plain. (literal)
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