Volcanismo Cretácico Superior ? Paleoceno en la Alta Cordillera al Sur de la Provincia de Mendoza (35°-30?).

SOFIA IANNELLI; LUCAS FENNELL; VANESA LITVAK; LUCIA FERNÁNDEZ PAZ; ANDRÉS FOLGUERA

Congreso; XX Congreso Geológico Argentino; 2017

Recent new U/Pb age confirms the presence of an Upper Cretaceous-Paleocene magmatism in southern Mendoza Andes (35º30?S). New geochemical dataset inform in this work shows that Upper Cretaceous volcanism is characterized by subalkaline basalts and trachy-andesites that grade from a calc-alkaline magmatic source with slab influence, towards a more enriched magmatism with an alkaline signature, lesser slab-fluids contribution and lower melting degrees.