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(Article of periodic en Anglais - 2012)

Document title

The Umbria-Marche Apennines as a double orogen : Observations and hypotheses

Authors(s) and Affiliation(s)

BARCHI M.R. ; ALVAREZ W. ; SHIMABUKURO D.H. ;

Abstract

The Umbria-Marche Apennines, an arc-shaped fold and thrust belt form the external part of the Northern Apennines. The AA. suggest that this fold-thrust belt can be divided longitudinally into 2 sectors. The boundary between the eastern and western parts of the Umbria-Marche Apennines is here termed the Scheggia-Foligno Line (SFL). Various mechanisms might be invoked to explain the discontinuity at this SFL. The possible explanations include causes of local character, linked to the sedimentary and tectonic evolution of the region. However, it also possible that the Western and Eastern Umbria-Marche Apennines represent completely different orogenic systems, with different causes - possibly with the former related to Corsica-Adria collision and the latter due to slab rollback of Adriatic lithosphere. In either case, this study demonstrates the complexity of evolution of the Northern Apennines, with adjacent zones showing abrupt variations in their history and style of deformation, which are difficult to incorporate in a single, unified geodynamic model. - (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. 258-271]

Bibliographic references : 80 ref.

Collation : 11 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 5205

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.3301/IJG.2012.17

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