Características composicionales y procesos de evolución magmática en el complejo volcánico sur-III de Fuerteventura (Islas Canarias)

• F. Hernán ^[1] ; C.R. Cubas ^[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. 550-553
• Idioma: español
• Títulos paralelos:
  • Compositional features and fradionation processes in the Southern Volcanic Complex III of Fuerteventura (Canary Islands)
• Enlaces
  • Texto completo (pdf)
• Resumen

  • The Southern Volcanic Complex 111 is formed by basalts, a lesser amount of trachybasa/ts and some scarce trachytes, ali of them mildly alkaline. Crystal fractionation was in an early stage, controled by crystallisation and extraction of olivine (60%) and clinopyroxene (40%). The crystallisation path is, then, ru/ed by dominant clynopyroxene and lesser proportions of plagioclase and Ti-magnetite. Later extraction of plagioclase and clinopyroxene and some other differenLation processes, cou/d account far the presence of trachytes. The Angostura Formation representing the most recent activity within the entire Southern Volcanic Complex, consists of strongly alkaline and u/traa/kaline rocl