Petrology and geochemical characterization of the mantle sources of lava flows in the northwest region the Paraná Magmatic Province - Machado, Fábio Braz; Rocha Júnior, Eduardo Reis Viana; Nardy, Antonio José Ranalli; Marques, Leila Soares; Oliveira, Marcos Aurelio Farias de (Simpósio de Geologia do Sudeste, 2009)