Civetta, Lucia and D'Antonio, Massimo (2007) Slab disruption, mantle circulation, and the opening of the Tyrrhenian basins. In: Cenozoic volcanism in the mediterranean area. Geological Society of America, Boulder, Colorado, pp. 153-169. ISBN 9780813724188

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URL ufficiale: www.geosociety.org
Tipologia del documento: Capitolo di libro
Lingua: English
Titolo: Slab disruption, mantle circulation, and the opening of the Tyrrhenian basins
Autori:
AutoreEmail
Civetta, Lucia[non definito]
D'Antonio, Massimo[non definito]
Autore/i: Faccenna C., Funiciello F., Civetta L., D'Antonio M., Moroni M., Piromallo C.
Data: 2007
Numero di pagine: 17
Dipartimento: Scienze fisiche
Numero identificativo: 10.1130/2007.2418(08)
URL ufficiale: www.geosociety.org
Titolo dell'opera che contiene il documento: Cenozoic volcanism in the mediterranean area
Nazione dell'editore: STATI UNITI D'AMERICA
Luogo di pubblicazione: Boulder, Colorado
Editore: Geological Society of America
Data: 2007
ISBN: 9780813724188
Volume: 418
Intervallo di pagine: pp. 153-169
Numero di pagine: 17
Parole chiave: Subduction, Mediterranean, Laboratory experiments, Seismic tomography
Numero identificativo: 10.1130/2007.2418(08)
Depositato il: 18 Ott 2010 08:33
Ultima modifica: 30 Apr 2014 19:41
URI: http://www.fedoa.unina.it/id/eprint/5719

Abstract

Plate tectonic history, geological, geochemical (element and isotope ratios), and seismological (P-wave tomography and SKS splitting) data are combined with laboratory modeling to present a three-dimensional reconstruction of the subduction history of the central Mediterranean subduction. We fi nd that the dynamic evolution of the Calabrian slab is characterized by a strong episodicity revealed also by the discrete opening of the Tyrrhenian Sea. The Calabrian slab has been progressively disrupted by means of mechanical and thermal erosion leading to the formation of large windows, both in the southern Tyrrhenian Sea and in the southern Apennines. Windows at lateral slab edges have caused a dramatic reorganization of mantle convection, permitting inflow of subslab mantle material and causing a complicated pattern of magmatism in the Tyrrhenian region, with coexisting K- and Na-alkaline igneous rocks. Rapid, intermittent avalanches of large amounts of lithospheric material at slab edges progressively reduced the lateral length of the Calabrian slab to a narrow (200 km) slab plunging down into the mantle and enhancing the end of the subduction process.

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