The structure of the upper crust in the Alps-Apennines boundary region deduced from refraction seismic data

Biella, G.; Gelati, R.; Maistrello, M.; Mancuso, Maria Elisa; Massiotta, P.; Scarascia, S.

doi:10.1016/0040-1951(87)90295-2

Cited by 23 publications

(10 citation statements)

References 2 publications

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“…In the last ten years a large number of drillhole and geophysical data have become available which may be integrated and combined with the results of recently refined field geological studies in order to better define the constraints on any model of the tectonics of what is here called the 'Ligurian knot'. In particular, recent refraction lines in the region of the Apennine-Alpine link (BIELLA et al, 1987; ALPS-APENNINES OROGENES STUDY GROUP, 1987;LOZEJ et al, 1990;CASSINIS et al, 1990;) may be tied into the detailed subsurface data from the Po basin and its southern border (PIERI & GROPPI, 1981;CASSANO et al, 1986). In addition, the problem of the lithospheric root may be viewed in the light of the deep data collected for the European Geo Traverse .…”

Section: Introductionmentioning

confidence: 96%

The collisional knot in Liguria

Laubscher¹,

Biella

Cassinis

et al. 1992

Geol Rundsch

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ZusammenfassungAcht neue seismische Refraktionsprofile in den Nordappenninen und den Ligurischen Alpen wurden berechnet, und zwar in der Fortsetzung von Reflexionsprofilen im Pobecken, die von Bohrungen kontrolliert sind. Diese neuen Refraktionsprofile tragen bei zu einer besseren Erfassung der Untergrundstruktur dieses verwickelten ,,Ligurischen Knotens". Im besonderen haben sie die Abgrenzung von einigen K6rpern hoher Geschwindigkeit erm6glicht, die korrelierbar sind mit gewissen geologischen Einheiten, nfimlich mit dem adriatischen Mesozoikum, den Ophiolithen der appenninischen Liguriden sowie mit den Antolaflysch unterlagernden Ophiolithen und Karbonaten der ligurischen Alpen. Bei der Verbindung der Reflexions-und Refraktionslinien stellt sich heraus, dab die genannten Einheiten hoher Geschwindigkeit durch wichtige Dislokationen getrennt sind: die basale Uberschiebung der Padaniden (PlioPleistocaen), die Villalvernia-Varzi-Linie (OligoMiocaen), die Ottone-Levanto-Linie (Oligo-Miocaen) und den Volpedo-Valle Salimbene-Bruch (Oligo-Miocaen, reaktiviert als Transferbruch im PlioPleistocaen). Die 3D-Geometrie des Ligurischen Knotens ist interpretierbar im Rahmen der regionalen Kinematik. Sie ist vertr~glich mit einem Modell, das eine oligocaen-frfihmiocaene NW-Translation des Adria-Indenters vorsieht, gekoppelt mit einem Einbruch des proven9alisch-ligurischen Beckens und einer Rotation des sardo-ligurischen Komplexes in die nach Osten zurfickweichende adriatische Subduktionszone. Die refraktionsseismischen Berechnungen erstrecken sich nur bis zu einer Tiefe von 15 km; sie werden jedoch erg/inzt durch Daten fiber die Lage der Moho, die ftir die Europ/iische Geotraverse (EGT) erarbeitet wurden. Die Moho scheint in eine Anzahl von Dom/inen zerlegt zu sein, die interpretiert werden k6nnen im Lichte der Zusammensetzung und tektonischen Geschichte der h6heren Krustenteile. Insbesondere scheint die tiefstgelegene Moho-Dom/ine abgeschnitten zu werden durch den Volpedo-Valle Salimbene-Bruch, welcher folglich die ganze Kruste in Mitleidenschaft ziehen wtirde. Abstract

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Section: Introductionmentioning

confidence: 96%

The collisional knot in Liguria

Laubscher¹,

Biella

Cassinis

et al. 1992

Geol Rundsch

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“…A progressive uplifting of the basin followed since Langhian times, related to northward movement of the Padan thrust belt (Faletti et al 1995 (Cravero et al 2006). The sedimentary succession rests unconformably on strongly deformed Alpine metamorphic units (Biella et al 1987(Biella et al , 1992Gelati and Gnaccolini 1988).…”

Section: Geological Settings Of the Langhe Areamentioning

confidence: 99%

Development of a new translational and rotational slides prediction model in Langhe hills (north-western Italy) and its application to the 2011 March landslide event

et al. 2012

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This study outlines the relationship between antecedent precipitations and activation of the translational rock-block slides (TRBSs). This type of landslide has the peculiarity to involve wide sectors of the sedimentary bedrock, and it is emblematic in the Langhe area, in the southern hilly part of Piemonte in the Tertiary Piemonte Basin. The Langhe hills are particularly renowned for the cultivation of valuable vineyards, and therefore, constitute a place of important economic and tourist interest. Furthermore, the high density of structures and infrastructures in this area exposes a number of elements to the activity of these large landslides. In order to minimize human and economic losses, it is particularly important to establish a warning system capable of providing announcement of activation of TRBSs with sufficient advance. In this direction, the Environmental Protection Agency of Piemonte (ARPA Piemonte) developed a precipitation-threshold-based model. The model is set up on an extensive collection of historical data about the landslides movements (since 1917) and the related complete meteorological dataset. The regional weather gauge network and the forecasted precipitation amount, including snow melt's contribution, provide input data to the model. Output model can be tested by observations derived by the regional landslides monitoring network consisting of inclinometers and groundwater gauges managed by ARPA Piemonte.

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“…discussed below, the geochemical experimental data seem to exclude this explanation. and 2) where the thickness of Tertiary sediments was inferred to be around 3-4 km, with maximum values in the AstiAlessandria depo-center as highlighted by the AGIP reflection seismic surveys (Biella et al, 1987;Miletto and Polino, 1992). The first seismic sequence was characterised by 13 foreshocks at shallow depth and around 60 aftershocks, while the While searching for the possible seismogenic structure, we considered the geophysical integrated analysis of Cassano et al (1986) and of Miletto and Polino (1992).…”

Section: The Heating Of Groundwater In the Occasion Of The Nizza-monfmentioning

confidence: 99%

Thermal anomalies and fluid geochemistry framework in occurrence of the 2000-2001 Nizza Monferrate seismic sequence (northern Italy): Episodic changes in the fault zone heat flow or chemical mixing phenomena?

Quattrocchi

Favara

Capasso

et al. 2003

Nat. Hazards Earth Syst. Sci.

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The structure of the upper crust in the Alps-Apennines boundary region deduced from refraction seismic data

Cited by 23 publications

References 2 publications

The collisional knot in Liguria

The collisional knot in Liguria

Development of a new translational and rotational slides prediction model in Langhe hills (north-western Italy) and its application to the 2011 March landslide event

Thermal anomalies and fluid geochemistry framework in occurrence of the 2000-2001 Nizza Monferrate seismic sequence (northern Italy): Episodic changes in the fault zone heat flow or chemical mixing phenomena?

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