Rendiconti Online della Società Geologica Italiana - Vol. 15/2011

Integration of natural data within a numerical model of ablative subduction: the example of the Austroalpine Domain of the Alps

Manuel Roda (*), Maria Iole Spalla (**) & Anna Maria Marotta (*)
(*) Dipartimento di Scienze della Terra "A. Desio", Sezione di Geofisica, Università degli Studi di Milano, Via L. Cicognara 7, 20129 Milano, Italy. E-mail: manuel.roda@unimi.it (**) Dipartimento di Scienze della Terra "A. Desio", Sezione di Geologia, Università degli Studi di Milano, Via Mangiagalli 34, 20133 Milano, Italy.


Volume: 15/2011
Pages: 113-116

Abstract

A numerical modeling approach is used to validate the physical and geological reliability of the Alpine geodynamic evolution of an inner portion of the Alpine belt: the Austroalpine Domain. A previous numerical model has been refined to extend the comparison with the natural data to the entire Austroalpine Domain in terms of P-T peak setting. The comparison between the model predictions and the natural data belonging to the Austroalpine Domain highlights a very good agreement for what concern the Austroalpine of the Western Alps. This could suggests that a pre-collisional evolution of this domain, with the burial of the continental rocks (induced by ablative subduction of the overriding plate - Adria plate) and their exhumation (driven by up- welling flow generated in a hydrated mantle wedge) could be a valid mechanism for this part of the Alps. The results are less comparable with the thermal state suggested by the natural data of the Austroalpine of the Eastern Alps.

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