Xenolitos de metapelitas de alto grado en metabasitas:evidencia del emplazamiento en corteza continental del magmatismo básico Nevado-Filábride (Cordilleras Béticas)

  1. Maria Teresa Gómez Pugnaire 1
  2. M. Muñoz 2
  1. 1 Instituto Andaluz de Geología Mediterránea (CSIC). Universidad de Granada
  2. 2 Universidad Complutlense
Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 1989

Issue: 7

Pages: 13-15

Type: Article

More publications in: Geogaceta

Abstract

Xenoliths from the continental crust have been found in the olivine-bearing dolerites in the Nevado-Filábride complex. This material is partially melted and assimilated by the igneous rocks and therefore chemical and mineralogical composition of both basaltic melts and xenoliths was modified: the xenoliths are composed of metamorphic and restite portions and in the basaltic melt the AI2O3 and SiO2 content increased in the sites with a higher xenolith content. The latter represent part of a metamorphic continental crust enclosed within the magma during its ascent and indicate, as do other chemical and geological features, that the metabasites were amplaced in the continental crust.