The state of Rio de Janeiro, Brazil, is characterized by three main geomorphologic formations, the landform constituted by crystalline rocks, exposed or covered by their alteration products; coastal tablelands, formed by Barreiras Formation Tertiary sediments; and alluvial floodplain sediments of Quaternary age. Differences between parent material and topography and their influence on soil genesis have been the main subject of studies in Rio de Janeiro. The objective of this study was to analyze the behavior of extractable forms of iron, […]