Early exhumation of underthrust units near the toe of an ancient erosive subduction zone: A case study from the Northern Apennines of Italy. (Articolo in rivista)

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Label
  • Early exhumation of underthrust units near the toe of an ancient erosive subduction zone: A case study from the Northern Apennines of Italy. (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1130/B30862.1 (literal)
Alternative label
  • Remitti F. [1], Balestrieri M. [2], Bettelli G. [3,4], Vannucchi P. [2] (2013)
    Early exhumation of underthrust units near the toe of an ancient erosive subduction zone: A case study from the Northern Apennines of Italy.
    in The Geological Society of America bulletin (Online); Geological Society Of America, Inc., Boulder (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Remitti F. [1], Balestrieri M. [2], Bettelli G. [3,4], Vannucchi P. [2] (literal)
Pagina inizio
  • 1820 (literal)
Pagina fine
  • 1832 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://gsabulletin.gsapubs.org/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 125 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [1] Dipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, Modena, Italy [2] CNR, Istituto di Geoscienze e Georisorse, U.O.S. Firenze, Firenze, Italy [3] Dipartimento di Scienze della Terra, Università di Firenze, Firenze, Italy [4] Department of Earth Sciences, Royal Holloway University of London, Egham Hill, Egham, Surrey TW20 0EX, UK (literal)
Titolo
  • Early exhumation of underthrust units near the toe of an ancient erosive subduction zone: A case study from the Northern Apennines of Italy. (literal)
Abstract
  • Apatite fission-track (AFT) analyses were performed on 16 sandstone samples from a tectonic mélange unit exposed in three tectonic windows located near the inferred front of the early Miocene subduction system of the Northern Apennines of Italy. The tectonic windows display a block-on-block tectonic mélange present under the Ligurian Units. The mélange is formed by portions of the upper plate incorporated in the plate boundary shear zone as a consequence of a mechanism of frontal tectonic erosion during the Aquitanian (early Miocene). AFT and structural data, together with stratigraphic constraints, allow the reconstruction of a complete deformation cycle with a phase of underthrusting followed by underplating and early exhumation of the tectonic mélange. The exhumation, in particular, took place at ~10-20 km from the original subduction front. Moreover, the analysis suggests that multiple faults were active at the same time in the frontal part of the subduction zone. (literal)
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