Petrogenetic aspects of acid and basaltic lavas from the Paraná Plateau (Brazil) geological , mineralogical and petrochemical relationships - Bellieni, Giuliano; Comin-Chiaramonti, P.; Marques, Leila Soares; Melfi, Adolpho José; Nardy, Antonio Jose Ranalli; Papatrechas, C; Piccirillo, Enzo Michele; Roisenberg, Ari; Stolfa, D (Journal of Petrology, 1986)