Anfíboles cálcicos de las cortlanditas de la Sierra de Gredos, Sistema Central español.
- Moreno-Ventas Bravo, Ignacio
- Castro Dorado, Antonio
ISSN: 0213-683X
Año de publicación: 1991
Número: 10
Páginas: 153-159
Tipo: Artículo
Otras publicaciones en: Geogaceta
Resumen
Calcic amphibo[es from cortlanditic rocks of the Sierra de Gredos were analized with the aim of knowing chemical controls and crystallization conditions. These amphiboles constitute part of the intercumular skeleton. They are rich in alumiina implying mínimum crystal/ization pressures of about 10 for near solidus temperatures. These conditions are diferent from that deduced from the composition of amphiboles in the associated gabbros, suggesting a complex history of crystallization and differentiation at diferent crustal levels