Middle Miocene high-pressure metamorphism and fast exhumation of the Nevado-Filabride Complex, SE Spain

Détails

ID Serval
serval:BIB_B4D45E96ABA8
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Middle Miocene high-pressure metamorphism and fast exhumation of the Nevado-Filabride Complex, SE Spain
Périodique
Terra Nova
Auteur⸱e⸱s
Sanchez-Vizcaino V.L., Rubatto D., Gomez-Pugnaire M.T., Trommsdorff V., Muntener O.
ISSN-L
0954-4879
Statut éditorial
Publié
Date de publication
2001
Peer-reviewed
Oui
Volume
13
Pages
327-332
Langue
anglais
Résumé
This study provides new constraints on fast cooling and exhumation
rates of high-pressure metamorphic rocks in young active mountain
belts. Ion microprobe (SHRIMP) U-Pb analysis of zircon in a pyroxenite
layer of the Cerro del Almirez ultrarnafic rocks (Nevado-Filabride
Complex, southern Spain) gave an age of 15.0 +/- 0.6 Myr (95% c.l.).
Mineral inclusions demonstrate that zircon formed close to the
high-pressure peak. Combined with previous fission track data, the 15
Myr age suggests high cooling (similar to 80 degreesC Myr(-1)) and
exhumation (similar to 1.2 cm yr(-1)) rates for the unit. The new
results indicate that both the Nevado-Filabride Complex and the
overlying Alpujarride Complex, with somewhat higher ages and exhumation
rates, underwent similar metamorphic evolutions at different times.
This implies that the Alpujarride rocks were exhumed when the
Nevado-Filabride was subducting and that the same tectonic scenario
propagated from one portion of the Betic Cordilleras to another.
Création de la notice
17/04/2009 23:56
Dernière modification de la notice
20/08/2019 15:23
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