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

Full text not available from this repository.
Official URL: www.geosociety.org
Item Type: Book Section
Language: English
Title: Slab disruption, mantle circulation, and the opening of the Tyrrhenian basins
Creators:
CreatorsEmail
Civetta, LuciaUNSPECIFIED
D'Antonio, MassimoUNSPECIFIED
Autor/s: Faccenna C., Funiciello F., Civetta L., D'Antonio M., Moroni M., Piromallo C.
Date: 2007
Number of Pages: 17
Department: Scienze fisiche
Identification Number: 10.1130/2007.2418(08)
Official URL: www.geosociety.org
Title of Book: Cenozoic volcanism in the mediterranean area
Country of publishing: STATI UNITI D'AMERICA
Place of Publication: Boulder, Colorado
Publisher: Geological Society of America
Date: 2007
ISBN: 9780813724188
Volume: 418
Page Range: pp. 153-169
Number of Pages: 17
Uncontrolled Keywords: Subduction, Mediterranean, Laboratory experiments, Seismic tomography
Identification Number: 10.1130/2007.2418(08)
Date Deposited: 18 Oct 2010 08:33
Last Modified: 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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