Numerical model of an ocean/continent subduction and comparison with Variscan orogeny natural data
Articolo
Data di Pubblicazione:
2013
Citazione:
Numerical model of an ocean/continent subduction and comparison with Variscan orogeny natural data / A. Regorda, A.M. Marotta, M.I. Spalla. - In: RENDICONTI ONLINE DELLA SOCIETÀ GEOLOGICA ITALIANA. - ISSN 2035-8008. - 29:(2013 Oct), pp. 142-145.
Abstract:
The effects of the viscous heating and the hydration of the mantle wedge on the continental crust recycling during the evolution of an ocean/continent subduction system are analysed by using a 2D finite element thermo-mechanical model. The dehydration of the oceanic slab, and the consequent hydration of the mantle wedge, is accomplished by lawsonite breakdown (Roda et al., 2010; 2011). The model shows the activation of convective cells in the mantle wedge that determine the recycling of subducted continental material. Moreover, with respect to Marotta and Spalla (2007), in which the hydration of the mantle wedge was not taken into account, much more correspondences between P-T predictions and the natural P-T estimates of the Alpine Variscan metamorphism are obtained.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Mantle wedge hydration; numerical modelling; ocean/continent subduction
Elenco autori:
A. Regorda, A.M. Marotta, M.I. Spalla
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