INVESTIGADORES
REMESAL Marcela Beatriz
congresos y reuniones científicas
Título:
CONTRIBUTION TO THE AGE OF THE SOMÚN CURÁ POST-PLATEAU EVENTS. EXTRA ANDEAN ARGENTINEAN PATAGONIA
Autor/es:
SALANI, F. M.; M. B. REMESAL,; M. E CERREDO; M. FRANCHI; A. A. ARDOLINO
Lugar:
Punta del Este
Reunión:
Simposio; V Simposio Sudamericano de Geología Isotópica (SSAGI); 2006
Institución organizadora:
SAAGI
Resumen:
During Late Oligocene-Miocene in the north of Extra Andean Argentinean Patagonia (Somún Curá basaltic plateau) post plateaustage is represented by several eruptive centers of different complexities.According to the compositional and eruptive diversitycan be distinguished two major types: a) large bimodal complexes and b) monogenetic eruptive centers.New WR K/Ar ages are presented here for two of the monogenetic post-plateau centers, the Trayén Niyeu Volcano and Dos Hermanos Hills and compared with others coeval centres. Petrography, geochemistry and geochronology point out the monogenetic eruptive centers of subalkaline affinities as Trayén Niyeu result contemporaneous with other monogenetic and bimodal centers of the post- alkaline sequence.
