Chemical and mineralogical constitution of redoximorphic features and mechanism of formation of Plinthosols from the Araguaia River plain, Brazil - Santos, Djavan Pinheiro; Santos, Glenio Guimarães; Oliveira, Virlei Álvaro de; Silva, Gustavo Cassiano da; Flores, Rilner Alves; Azevedo, Antônio Carlos; Souza, Valdomiro Severino de; Pereira, Marcos Gervasio (Revista Brasileira de Ciência do Solo, 2024)