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Structure and properties of the Adriatic crust in the central-eastern Southern Alps (Italy) from local earthquake tomography

Authors

  • Alfio Viganò,

    Corresponding author
    1. Sezione Centro di Ricerche Sismologiche, Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Udine, Italy
    • Correspondence: Alfio Viganò, Sezione Centro di Ricerche Sismologiche, Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Via Treviso 55, Udine 33100, Italy. Tel: +39 0461 492585; fax: +39 0461 492525; e-mail: alfio.vigano@retesismicatrento.org

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  • Davide Scafidi,

    1. Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, Università degli Studi di Genova, Genova, Italy
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  • Silvana Martin,

    1. Dipartimento di Geoscienze, Università degli Studi di Padova, Padova, Italy
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  • Daniele Spallarossa

    1. Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, Università degli Studi di Genova, Genova, Italy
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Abstract

Structure and properties of the Adriatic crust were determined from local earthquake tomography around the Giudicarie fault zone (central-eastern Southern Alps, Italy). Tomographic results, based on well-suited 436 revised earthquakes (period 1994–2007), have a resolution comparable to the scale of regional geological domains and tectonic structures. The observed strong velocity anomalies correlate well with lithological variations corresponding to different geological domains (particularly magmatic complexes at depth) and with high fracturing and/or presence of fluids along active fault systems (South Giudicarie and Valsugana–Bassano del Grappa–Montello thrusts).

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