Condiciones P - T de emplazamiento del batolito de Nisa-Alburquerque.

• González Menéndez, L. ^[2] ; Azor, A. ^[1]
  1. [1] Universidad de Granada

     Universidad de Granada

     Granada, España

     
  2. [2] Sílices La Cuesta S.L., Asturias
• Localización: Geogaceta, ISSN 0213-683X, Nº. 34, 2003, págs. 103-106
• Idioma: español
• Títulos paralelos:
  • P-T emplacement conditions of the Nisa-Alburquerque batholith
• Enlaces
  • Texto completo (pdf)
• Resumen

  • The Nisa-Alburquerc¡ue batholith (294 ± 11 Ma) is composed of S-type granites and small stocks of I-type granitoids. The batholith was emplaced into a variety of country rocks (metasediments and metaigneous lithologies) of three different domains, namely, the southern Central Iberian zone, the Central Unit, and the northern Ossa-Morena Zone. Pressure and temperature during final emplacement is investigated by considering previous studies in the contact aureole and by comparing with P-T estimates based on the mineralogy, normative composition and geochemistry of the S-type granites.

    On this ground, we proposed pressures of - 2,3 - 3 kbar, and temperatures of - 650 ºC as the most plausible ones during final emplacement of this batholith.