Resumen de El complejo leucogranítico tardi-hercínico de afinidad alcalina de Tossa de Mar (Cadenas Costeras Catalanas, NE de España)
M. Ferrés Hernandez, Pere Enrique Gisbert
The late-Hercynian batholith of the Catalonian Coastal Ranges (NE Spain) represents a typical highK calc-alkaline association. In the Tossa de Mar area, the calc-alkaline rocks are intruded by a highly acidic /eucogranitic complex, which consists of various plutonic and subvolcanic intrusions cut by related felsitic, granophyric, and porphyric dykes. The rocks of this complex show many petrological and geochemical characteristics of alkaline granites. The data suggest that these leucogranites may not be re/ated to the calc-alkaline association by a simple differentiation process. Their extreme acidic composition, their shallow emplacement, and the lack of related intermediate and basic rocks, suggest a crysta/lization from an ascending water under-saturated acidic magma generated at deep levels.
