Resumen de Geoquímica de los basaltos alcalinos del Pérmico superior del sector de Anayet (Pirineo central, Huesca)
Carlos Galé Bornao, Marceliano Lago San José, Enrique Arranz Yagüe, Andrés Gil Imaz, Andrés Pocoví Juan
The permian basalts of the Anayet area (Central Pyrenees, Huesca) show an evolved composition with a subalkaline to alkaline affinity, supported by their high Ti and P contents and their mineral assemblage (Ti-augite). Geochemical data suggest an enriched mantle source (HIMU) for the origin of this magmatism and the high contents of Ba, Th and U can be explained by interaction of the crust with the magma. The emplacement of these basalts within Upper Pemian red beds is related to the onset of a extensional regime during Permian times.
