Miocene adakitic intrusions in the Western Cordillera of Ecuador

Resumen

Ecuador is part of the northern Andes, which comprise accreted oceanic terranes on their western part. In Ecuador, these terranes are underplated, and form the crustal root of the Western Cordillera (Guillier et al. 2001). On the other hand, Recent arc magmatism is marked by abundant volcanic rocks of adakitic affinity (Bourdon et al. 2002, 2003). This led to the hypothesis that the adakitic products derive from the partial melting of the deeply