Metamorfismo de AP/BT en metapelitas de la unidad de Ragua (complejo Nevado-Filábride, Béticas). Resultados termobarométricos del estudio de equilibrios locales

Booth-Rea, G., Azañól, J. M. and Martínez-Martínez, J. M. (2003) Metamorfismo de AP/BT en metapelitas de la unidad de Ragua (complejo Nevado-Filábride, Béticas). Resultados termobarométricos del estudio de equilibrios locales Geogaceta, 34 . pp. 87-90.

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Abstract

We have analysed the thermobarometric equilibrium conditions reached during local equilibria among phengite + chlorite + quartz + water ± chloritoid ± garnet assemblages found in metapelites of the Ragua unit, the structurally-lowest tectonic unit outcropping in the Betics hinterland (southern Spain). Porphyroblast- deformation relationships show that lenticular domains preserved within the main foliation in the metapelites grew during a HP/LT prograde metamorphic event with thermal conditions of 320-450 °C and 12-14 kbar pressure. Hence, the Ragua unit subducted in a continental accretionary-wedge context, undergoing a tectonic evolution parallel to the one followed by the two other overlying Nevado-Filabride units.

Document Type: Article
Keywords: Betics, Nevado-Filabride complex, HP/LT metamorphism, local equilibria, mica-chlorite
Research affiliation: OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-GDY Marine Geodynamics
Refereed: No
ISSN: 0213-683X
Date Deposited: 18 Feb 2008 17:26
Last Modified: 16 May 2017 14:26
URI: http://eprints.uni-kiel.de/id/eprint/5654

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