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Solid Earth An interactive open-access journal of the European Geosciences Union

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https://doi.org/10.5194/se-2017-131
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
02 Jan 2018
Review status
This discussion paper is a preprint. A revision of this manuscript was accepted for the journal Solid Earth (SE) and is expected to appear here in due course.
First evidence of active transpressive surface faulting at the front of the eastern Southern Alps, northeastern Italy. Insight on the 1511 earthquake seismotectonics
Emanuela Falcucci1, Maria Eliana Poli2, Fabrizio Galadini1, Giancarlo Scardia3, Giovanni Paiero2, and Adriano Zanferrari2 1Istituto Nazionale di Geofisica e Vulcanologia, Roma, Via di Vigna Murata 605, 00143, Italy
2University of Udine – Dept. of Agricultural, Food, Environmental and Animal Sciences, Udine, Italy
3Universidade Estadual Paulista (UNESP), Instituto de Geociências e Ciências Exatas, Rio Claro – SP, Brazil
Abstract. We investigated the eastern corner of northeastern Italy, where the NW-SE trending dextral strike-slip fault systems of western Slovenia intersects the south-verging fold and thrust belt of the eastern Southern Alps . The area suffered the largest earthquakes of the region, among which are the 1511 (Mw 6.3) event and the two major shocks of the 1976 seismic sequence, with Mw = 6.4 and 6.1 respectively. The Colle Villano thrust and the Borgo Faris-Cividale strike-slip fault have been first analyzed by interpreting industrial seismic lines and then by performing morpho-tectonic and paleoseismological analyses. These different datasets indicate that the two structures define an active, coherent transpressive fault system that activated twice in the past two millennia, with the last event occurring around the 15th–17th century. The chronological information, and the location of the investigated fault system suggest its activation during the 1511 earthquake.
Citation: Falcucci, E., Poli, M. E., Galadini, F., Scardia, G., Paiero, G., and Zanferrari, A.: First evidence of active transpressive surface faulting at the front of the eastern Southern Alps, northeastern Italy. Insight on the 1511 earthquake seismotectonics, Solid Earth Discuss., https://doi.org/10.5194/se-2017-131, in review, 2018.
Emanuela Falcucci et al.
Emanuela Falcucci et al.

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