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(Article of periodic en Anglais - 2012)

Document title

Analysis of the fault pattern in the Lower Lanzo Valley (italian Western Alps) : a multi-scale integrated approach

Authors(s) and Affiliation(s)

FUSETTI E. ; PERRONE G. ; MORELLI M. ; CADOPPI P. ;

Abstract

This work combines, at different scales, field mapping, detailed structural analysis, satellite images (Landsat TM and ASTER) and aerial photos interpretation for the study of the fault network affecting the Lower Lanzo Valley (Turin), a key-area of the inner Western Alps bordered by 2 major post-Oligocene tectonic discontinuities : the Canavese Line and the Col del Lis-Trana Deformation Zone. In the study area, where both the Sesia-Lanzo Zone (Austroalpine Domain) and the Lanzo Ultramafic Complex (Piemonte Zone) crop out, this integrated approach allowed distinguishing an E-W-striking major dextral transcurrent/transpressive fault system. The subsequent normal reactivation of the E-W faults may be related to the extensional regime that affected the inner Western Alps since the Early(?) Miocene, due to the progressive decrease of the convergence between the 2 plates and the subsequent prevailing of gravitational body forces inside the chain. Seismological data indicate that this stress regime is still ongoing. - (NF)

Source

Article of periodic

published at : Italian Journal of Geosciences / ISSN 2038-1719

Editor : Società Geologica Italiana, Roma - ITALIE (2009)

Millesime : 2012, vol. 131, no2 [pp. 286-301]

Bibliographic references : 74 ref.

Collation : 9 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 5205

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.3301/IJG.2012.23

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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