B6 – Central Apennines and its earthquakes: from sedimentology
and active tectonics to seismic microzonation studies

Leaders

Chiara D’Ambrogi, Servizio Geologico d’Italia – ISPRA, Italy
Emanuela Falcucci, Istituto Nazionale di Geofisica e Vulcanologia, Italy
Gian Paolo Cavinato, CNR IGAG, Italy
Stefano Gori, Istituto Nazionale di Geofisica e Vulcanologia, Italy
Marco Mancini, CNR IGAG, Italy
Giovanni Monegato, CNR IGG, Italy
Cristina Muraro, Servizio Geologico d’Italia – ISPRA, Italy
Giancarlo Scardia, Universidade Estadual Paulista, Brazil

Contact person: chiara.dambrogi@isprambiente.it, marco.mancini@igag.cnr.it

Type: Post-Meeting
Duration: 3 days
Cost: € 470,00
Start: Rome (14th September 2019 – early morning)
End: Rome (16th September 2019 – late evening)
Difficulty level: Low-Medium
Participants: min 12 max 20

 B6  - Central Apennines and its earthquakes | Post meeting Trips | IAS 2019 Rome
Earthquake damages (Cossito village), on the background the Laga formation sandstones

The Central Apennines represents a wonderful record of a still active complex stratigraphic and structural history, as testified by recent earthquakes (L’Aquila 2009, Mw 6.3; Amatrice-Norcia 2016, Mw 6.5). Normal faults activity contributed to the formation of tectonic basins that hosted continental depositional sequences, which recorded the long-term traces at surface of large earthquakes. Moreover local seismic amplification as result of impedance contrasts of soft sediments on hard rocks and liquefactions have been observed.
The field trip will illustrate examples of earthquake-induced effects due to the recent seismic crises, in relation to the local stratigraphic and structural setting. The main steps of the geological evolution of Central Apennines, from Jurassic up to the Present, will be investigated which will help define contrasting responses to earthquakes between the cover terrains and the seismic bedrock. Regional uplift and active faulting that interplayed with Quaternary climatic changes to carve the mountain chain into its present shape, feeding continental stratigraphic sequences will be illustrated.The effects of recent earthquakes on towns and villages will be described considering the contribution of sediments characterization and results of the advanced seismic microzonation studies.

Itinerary

Rome, Rieti-Salto Valley, Leonessa, Amatrice-Arquata del Tronto, L’Aquila-Aterno Valley, Rome

Technical Information

Low-medium difficulty fieldtrip (short walks on dirt roads and trails) in a very suggestive landscape of the Central Apennines. The maximum elevation will be 1,200 m a.s.l.. Weather conditions during excursion could quickly change, with temperatures ranging from 15° to 30° C. Light hiking clothing and boots, and rain gear are suggested. Accommodation is planned in local small or country hotels (“agriturismo”). The transport will carried out with minibus or minivan.