Skip to Main Content
Book Chapter

The Calabrian Orocline: buckling of a previously more linear orogen

By
Stephen T. Johnston
Stephen T. Johnston
School of Earth & Ocean Sciences, University of Victoria, PO Box 3055 STN CSC, Victoria, British Columbia, Canada
Search for other works by this author on:
Stefano Mazzoli
Stefano Mazzoli
Dipartimento Scienze della Terra, Università di Napoli ‘Federico II’, Largo San Marcellino 10, 10138 Napoli (NA), Italy
Search for other works by this author on:
Published:
January 01, 2009

Abstract

Recent structural studies of the Apennines and the Calabrian orocline and a compilation of structural, stratigraphic, GPS and palaeomagnetic data from the central and western Mediterranean region show that beginning in the Late Miocene a N–S trending ribbon continent that had been previously deformed, and which we now recognize as the Apennine–Sicilian thrust belt, buckled eastward in response to northward movement of Africa relative to stable Europe. A simple geometric model is consistent with available data and shows how eastward buckling of an originally north–south continental beam explains: (1) opening of the Tyrrhenian Sea basin from 7–2 Ma, at which point sea-floor spreading ceases and the basin begins to shrink by southward subduction beneath Sicily; (2) the coeval development of an east-verging fold-and-thrust belt along the length of the Apennine–Sicilian belt in response to overthrusting of the autochthon to the east, followed by extension beginning at 1 Ma as the Apennine portion of the beam begins to retreat to the SW; and (3) subduction of continental and oceanic lithosphere east of the buckling beam into a trench that migrates eastward through time due to ‘push back’ by the buckling upper plate.

You do not currently have access to this article.

Figures & Tables

Contents

Geological Society, London, Special Publications

Ancient Orogens and Modern Analogues

J. B. Murphy
J. B. Murphy
St Francis Xavier University, Canada
Search for other works by this author on:
J. D. Keppie
J. D. Keppie
Universidad Nacional Autonoma de Mexico, Mexico
Search for other works by this author on:
A. J. Hynes
A. J. Hynes
McGill University, Canada
Search for other works by this author on:
Geological Society of London
Volume
327
ISBN electronic:
9781862395756
Publication date:
January 01, 2009

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal