Temporal and compositional evolution of silicic volcanism in the Paraná-Etendeka Province in south Brazil as markers of progressive crustal modification by voluminous basaltic magmatism - Janasi, Valdecir de Assis; Polo, Liza; Marteleto, Natasha Sarde; Guimarães, Letícia Freitas; Alves, Adriana (Chapman Conference, 2018)