Características composicionales y procesos de evolución magmática en el complejo volcánico Sur - II de Fuerteventura (Islas Canarias).

• C.R. Cubas ^[1] ; F. Hernán ^[1] ; E. Ancochea ^[2] ; J.L. Brandle ^[2] ; M.J. Huertas ^[2]
  1. [1] Universidad de La Laguna

     Universidad de La Laguna

     San Cristóbal de La Laguna, España

     
  2. [2] Universidad Complutense de Madrid

     Universidad Complutense de Madrid

     Madrid, España

     
• Localización: Geogaceta, ISSN 0213-683X, Nº. 20, 3, 1996, págs. 546-549
• Idioma: español
• Títulos paralelos:
  • Compositional features and fractionation processes in the Southern Volcanic Complex II Fuerteventura (Canary Islands)
• Enlaces
  • Texto completo (pdf)
• Resumen

  • The Southern Volcanic Complex II consists mainly o( basalts wilh some lrachybasalls and basa/tic trachyandesites. Its lower sequence is formed by middle a/kaline rocks whilsl in lhe upper one only mildly all ali Hy+OI -normative rocks are found. The variations in composilion are largely expfainec/ by similar C1ystal fractionation mode/s far both the lower and the upper sequence5. The varialion among different basa/tic types is due to different extraction rales of about 10-15¾, olivine being lhe dominanl phase, followed, in a lesser proportion, by clinopyroxene. The differencc bclwccn thc most diffcrcntialcc/ basalts and trachybasa/ts or basa/tic trachyandesiles could be explainec/ by exlraction o( clominanl clinopyroxene wilh pfagioc/ase and Fe-Ti oxides.