'ANTPOT. 40 Ar'/'ANTPOT. 39Ar' ages and geochemistry of Maranhão CAMP tholeiites (Brazil): implications for low and high-Ti basalt sources - Merle, R; Marzoli, Andrea; Verati, C; Bertrand, H; Chiaradia, Massimo; Bellieni, Giuliano; Ernesto, Márcia (Goldschmidt Conference, 2007)