Modelización numérica de la evolución geodinámica del surco de Valencia
- Negredo, A.M. 1
- Fernández, M. 2
- Torné, M. 2
- 1 Università degli Studi di Milano, Italia
-
2
Instituto de Ciencias de la Tierra Jaume Almera
info
ISSN: 0213-683X
Année de publication: 1996
Titre de la publication: Comunicaciones presentadas en el IV Congreso Nacional de Geología, Alcalá de Henares, 1996
Número: 20
Pages: 978-981
Type: Article
D'autres publications dans: Geogaceta
Résumé
A numerical kinemalic model of extension has been used lo study the geodynamic evolution of the Valencia Trough. The model allows for depth-dependent lithospheric extension and lateral accommodation of extension. The best fitting model of the geophysical observations is obtained by assuming a phase of synrift evolution lasting 15 Ma, with maximum lithospheric thinning in the trough during the Early Miocene (25-15 Ma) and reduced extension during the Serravallian (15-10 Ma). The lower crust and lithospheric mantle would be stretched by a higher amount than the upper crust The evolution of the Balearic Promontory would be characterised by a first stage of crustal thickening during the Lower Miocene and a second slage of thinning related to the opening of the Algerian Basin during the Serravallian.