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

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 ,4/203 and SiQ 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