Somún Curá 8 Argentina 7 Basalts 6 Extrandean Patagonia 6 Patagonia 6 basalt 6 Arroyo Ranquil Huao 4 Petrology 4 geochemistry 4 lava flow 4 partial melting 4 petrography 4 volcaniclastic deposit 4 volcanism 4 Age 2 Ciencias Exactas y Naturales 2 Cura 2 Fractional crystallization 2 Geochronology 2 Inflated lava flows 2 Intraplate magmatism 2 Liquid immiscibility texture 2 Rio Negro [Argentina] 2 Somún Curá plateau 2 Somún curá 2 Tertiary 2 Trachytes 2 Volcanism 2 bimodal association 2 fractional crystallization 2