Xenolitos de metapelitas de alto grado en metabasitas:: evidencia del emplazamiento en corteza continental del magmatismo básico Nevado-Filábride (Cordilleras Béticas)
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Maria Teresa Gómez Pugnaire [1] ; M. Muñoz [2]
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[1] Universidad de Granada
Universidad de Granada
Granada, España
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[2] Universidad Complutlense
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- Localización: Geogaceta, ISSN 0213-683X, Nº. 7, 1989, págs. 13-15
- Idioma: español
- Enlaces
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Resumen
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.
