Geochemical features of the mantle source beneath Irazú and Turrialba volcanoes, Costa Rica

Andrea Di Piazza, National Institute of Geophysics and Volcanology, sez. Palermo, Rome, Italy, Andrea Luca Rizzo, Organization Not Listed, Washington, DC, United States, Guillermo Alvarado-Induni, PYSA ICE, Apdo, Costa Rica, Maria Luisa Carapezza, National Institute of Geophysics and Volcanology, Roma 1, Rome, Italy, Maarten J de Moor, Observatorio Vulcanológico y Sismológico de Costa Rica, Heredia, Costa Rica and Maria Martinez, OVSICORI-UNA, Heredia, Costa Rica