Petrología y geoquímica del plutón aplopegmatítico de Peña Madrid (Sierra de Guadarrama, S.C.E.).
ISSN: 0213-683X
Ano de publicación: 1993
Número: 15
Páxinas: 157-160
Tipo: Artigo
Outras publicacións en: Geogaceta
Resumo
The Peña Madrid aplo-pegmatitic pluton is a very fractionated l-type granite with typically MgO, Ti02, Ba, Sr, Nb and XREE low contents. They intrude as a sheet-like body in the Las Navas del Marqués batholith developing an «in situ» differentiation from the roof margins towards the inner parts. The roof granites show the most primitive magmatic characteristics: the Ti and Mg richest biotites and higher MgO, Ti02, Ba, (Sr, Zr) whole-rock contents