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
Il contenuto (Full text) non è disponibile all'interno di questo archivio.| Tipologia del documento: | Capitolo di libro |
|---|---|
| Lingua: | English |
| Titolo: | Slab disruption, mantle circulation, and the opening of the Tyrrhenian basins |
| Autori: | Autore Email 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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