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    The carbonate tectonic units of northern Calabria (Italy): a record of Apulian palaeomargin evolution and Miocene convergence, continental crust subduction, and exhumation of HP-LT rocks.

    20502_downloaded_stream_490.pdf (2.086Mb)
    Access Status
    Open access
    Authors
    Reddy, Steven
    Date
    2007
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Iannace, A. and Vitale, S. and D'Errico, M. and Mazzoli, S. and Di Staso, A. and Macaione, E. and Messina, A. and Reddy, S. M. and Somma, R. and Zamparelli, V. and Zattin, M. and Bonardi, G.. 2007. The carbonate tectonic units of northern Calabria (Italy): a record of Apulian palaeomargin evolution and Miocene convergence, continental crust subduction, and exhumation of HP-LT rocks.. Journal of the Geological Society 164 (6): 1165-1186.
    Source Title
    Journal of the Geological Society
    Additional URLs
    http://www.lyellcollection.org/
    Faculty
    Department of Applied Geology
    Division of Resources and Environment
    Remarks

    Copyright (c) 2007 The Geological Society of London.

    This material has been published in the Journal of the Geological Society (2007) 164, 1165-1186 the only definitive repository of the content that has been certified and accepted after peer review.

    Copyright and all rights therein are retained by The Geological Society of London.

    URI
    http://hdl.handle.net/20.500.11937/20169
    Collection
    • Curtin Research Publications
    Abstract

    In northern Calabria (Italy), the metasedimentary succession of the Lungro?Verbicaro tectonic unit preserves mineral assemblages suggesting underthrusting to depths in excess of 40 km. Internal deformation of these rocks occurred continuously during the following decompression. Index mineral composition associated with progressively younger tectonic fabrics indicates that a substantial part of the structural evolution took place within the blueschist-facies P-T field. Despite their tectonic and metamorphic history, the rocks of the Lungro-Verbicaro Unit preserve significant sedimentary and palaeontological features allowing correlations with successions included in adjacent thrust sheets and the reconstruction of the Mesozoic continental margin architecture. The subduction-exhumation cycle recorded by the Lungro-Verbicaro Unit is entirely of Miocene age. This portion of the Apulia continental palaeomargin was involved in convergence-related deformation not earlier than the Aquitanian. The integration of our results with available constraints on the tectonic evolution of the Apennine-Calabrian Arc system suggests that subduction and most of the subsequent exhumation of the Lungro?Verbicaro Unit occurred, up to Langhian time, at maximum vertical rates in excess of 15 mm a-1. The exhumation process was then completed, at much slower rates (<2 mm a -1) in Late Miocene time, as indicated by both apatite fission-track data and stratigraphic information.

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