The Temporal Relationship Between Alkaline and Tholeiitic Magmatism in the Paraná-Etendeka Igneous Province: ID-TIMS U-Pb Ages of the José Fernandes Gabbro and Dykes of the Ponta Grossa Arch, Brazil - Almeida, Vidyã Vieira; Heaman, Larry M; Shaulis, Barry; Janasi, Valdecir de Assis; Faleiros, Frederico Meira (AGU Fall Meeting, 2015)