Metamorfismo de AP/BT en metapelitas de la unidad de Ragua (complejo Nevado-Filábride, Cordillera Bética). Resultados termo-barométricos del estudio de equilibrios locales.

• Booth-Rea, G. ^[1] ; Azañón, J.M. ^[2] ; Martínez-Martínez, J.M. ^[2]
  1. [1] GEOMAR Helmholtz Centre for Ocean Research Kiel

     GEOMAR Helmholtz Centre for Ocean Research Kiel

     Kreisfreie Stadt Kiel, Alemania

     
  2. [2] Universidad de Granada

     Universidad de Granada

     Granada, España

     
• Localización: Geogaceta, ISSN 0213-683X, Nº. 34, 2003, págs. 87-90
• Idioma: español
• Títulos paralelos:
  • HP/LT metamorphism from metapelites in the Ragua unit (Nevado-Filabride complex, Betic Cordillera). Results from local equilibria thermo-barometry
• Enlaces
  • Texto completo (pdf)
• Resumen

  • 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-Iowest 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 320-450ºC 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.