Piroxenos relictos: una clave para la interpretación del vulcanismo en la Faja Pirítica Ibérica

• M.L. Fernández-Martín ^[1] ; R Sáez ^[1] ; E. Pascual ^[1]
  1. [1] Universidad de Huelva

     Universidad de Huelva

     Huelva, España

     
• Localización: Geogaceta, ISSN 0213-683X, Nº. 20, 3, 1996, págs. 568-571
• Idioma: español
• Títulos paralelos:
  • Relict pyroxenes: a key to volcanism interpretation in the Iberian Pyrite Belt
• Enlaces
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• Resumen

  • Relict clinopyroxenes from strongly altered basalts sampled in the Sotiel-Torerera area (central sector of the Iberian Pyrite Belt, southwestern lberian Massif, Spain), have been analysed by EMP. lt has been found that clinopyroxene cores are Ti-rich, representing the pyroxene compositions equilibrated with basaltic magma. An alkaline magma character is consequently deduced. Finally, it is suggested that datafrom relict minerals may indicate the original magma character better than whole-rock geoshemistry, in this and other cases in which rock alteration is both intense and polyphased.