Please use this identifier to cite or link to this item:
http://hdl.handle.net/1843/52107| Type: | Artigo de Periódico |
| Title: | Genesis of soils from bauxite in Southeastern Brazil: resilification as a soil-forming process |
| Authors: | Ana Carolina Campos Mateu Fábio Soares de Oliveira Angélica Varajao Caroline Cibele Vieira Soares |
| Abstract: | Pedological 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. |
| Subject: | Ciência do solo Bauxita Silica |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | IGC - DEPARTAMENTO DE GEOGRAFIA |
| Rights: | Acesso Aberto |
| metadata.dc.identifier.doi: | https://doi.org/10.1590/18069657rbcs20160507 |
| URI: | http://hdl.handle.net/1843/52107 |
| Issue Date: | 2017 |
| metadata.dc.url.externa: | https://www.rbcsjournal.org/pt-br/article/genesis-of-soils-from-bauxite-in-southeastern-brazil-resilication-as-a-soil-forming-process/ |
| metadata.dc.relation.ispartof: | Revista Brasileira de Ciência do Solo |
| Appears in Collections: | Artigo de Periódico |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| genesisofsoilsfrombauxite.pdf | 23.2 MB | Adobe PDF | View/Open |
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