The Hercynian intrusive rocks of the Catalonian Coastel Ranges (NE Spain)

Abstract

The hercynian outcrops of the Catalonian Coastal Ranges (NE Spain) consist mainly of Lower Permian-Upper Carboniferous post-tectonic, epizonal granitoid intrusions which form a typical applutonic calc-alkaline suite ranging from mafic hornblende gabbros andultramafic olivine homblendites through tonalites and granodiorit to leucogranites. This suite displays major andtrace-element characteristics and Sr isotope ratios similar to volcanic arc and post-collision sedimagmatism and is therefore believed to have formed above subducted oceanic lithosphere and to have been modified by contamination with melts from the crust