Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Late orogenic transpressional tectonics in the "Ligurian knot"

L. Crispini, L. Federico, Giovanni Capponi and C. Spagnolo
Late orogenic transpressional tectonics in the "Ligurian knot" (in Alps and Apennines; a natural laboratory of structural geology and geodynamics; papers presented at the International meeting in honour of Gaetano Giglia and Tonino Decandia, Giovanni Capponi (editor), Michele Marroni (editor), Enrico Tavarnelli (editor) and Fernando Calamita (editor))
Italian Journal of Geosciences (June 2009) 128 (2): 433-441

Abstract

This study focuses on the Tertiary tectonic evolution at the boundary between Western Alps and northern Apennines in central Liguria (Italy). The architecture of the two belts derives from the oblique convergence between the Europe and Adria plates and hence this area represents an ideal case to study the crustal structures that develop during oblique lithospheric convergence. The analysis of the Oligocene-Miocene brittle structures reveals: the occurrence of principal displacement zones with related minor structures that fit a transpressional dextral regime and a NE-SW direction of maximum shortening; a regional strain partitioning between wrench-dominated and contraction-dominated domains; a structural control on the orientation and development of brittle structures by the pre-existing weaker pathways, provided by the alpine foliations and ductile shear zones. The principal displacement zones can be easily framed in the Oligocene-Miocene geodynamics of the "Ligurian knot", where the right-hand strike-slip component of the system provided a release of the Ligurian Alps from their southeastern segment, thus allowing the tightening of the arc of the Western/Ligurian Alps.


ISSN: 2038-1719
Coden: BOGIAT
Serial Title: Italian Journal of Geosciences
Serial Volume: 128
Serial Issue: 2
Title: Late orogenic transpressional tectonics in the "Ligurian knot"
Title: Alps and Apennines; a natural laboratory of structural geology and geodynamics; papers presented at the International meeting in honour of Gaetano Giglia and Tonino Decandia
Author(s): Crispini, L.Federico, L.Capponi, GiovanniSpagnolo, C.
Author(s): Capponi, Giovannieditor
Author(s): Marroni, Micheleeditor
Author(s): Tavarnelli, Enricoeditor
Author(s): Calamita, Fernandoeditor
Affiliation: Universita di Genova, Dip.Te.Ris., Genoa, Italy
Pages: 433-441
Published: 200906
Text Language: English
Summary Language: Italian
Publisher: Societa Geologica Italiana, Rome, Italy
Meeting name: Alps and Apennines; a natural laboratory of structural geology and geodynamics; International meeting in honour of Gaetano Giglia and Tonino Decandia
Meeting location: Pisa, ITA, Italy
Meeting date: 20071025Oct. 25-26, 2007
References: 48
Accession Number: 2011-009269
Categories: Structural geology
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch maps
N43°45'00" - N44°40'00", E07°45'00" - E10°04'60"
Country of Publication: Italy
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 201106
Close Modal

or Create an Account

Close Modal
Close Modal