Mateus, Ana Carolina CamposOliveira, Fábio Soares deVarajão, Angélica Fortes Drummond ChicarinoSoares, Caroline Cibele Vieira2018-09-102018-09-102017MATEUS, A. C. C. et al. Genesis of soils from bauxite in southeastern Brazil : resilication as a soil-forming process. Revista Brasileira de Ciência do Solo, v. 41, p. 1-18, nov. 2017. Disponível em: <http://www.scielo.br/scielo.php?pid=S0100-06832017000100314&script=sci_arttext>. Acesso em: 03 mai. 2018.18069657http://www.repositorio.ufop.br/handle/123456789/10157Pedological studies using X-ray diffraction (XRD), X-ray fluorescence (XRF), optical microscopy, and scanning electron microscopy (SEM-EDS) showed a Xanthic Ferralsol formed from the degradation of bauxite on a slope in the Caparaó region, in southeastern Brazil. We found a decrease in the number and size of bauxite fragments toward the top of the profiles, bauxite fragments that were more degraded at the top of the profiles, transformation of gibbsite into kaolinite, and absolute enrichment in silicon in the mass balance. These indicators suggest that resilication could be the major process responsible for formation of the soil; detailed studies are needed to verify the origin of the silica. The reintroduction of silica into the system occurs by the biogeochemical cycling of vegetation and, in some cases, water table fluctuations, highlighting the role of resilication as a soil-forming process in bauxite-derived soils.en-USabertoPedogenesisMicromorphologyFerralsolKaoliniteArtigo publicado em periodicoThis is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided that the original author and source are credited. Fonte: o próprio artigo.