Genesis of Soils from Bauxite in Southeastern Brazil: Resilication as a Soil-Forming Process
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Ciência do Solo (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100314 |
Resumo: | 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. |
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Genesis of Soils from Bauxite in Southeastern Brazil: Resilication as a Soil-Forming ProcesspedogenesisFerralsolkaolinitemicromorphologyABSTRACT 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.Sociedade Brasileira de Ciência do Solo2017-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100314Revista Brasileira de Ciência do Solo v.41 2017reponame:Revista Brasileira de Ciência do Solo (Online)instname:Sociedade Brasileira de Ciência do Solo (SBCS)instacron:SBCS10.1590/18069657rbcs20160507info:eu-repo/semantics/openAccessMateus,Ana Carolina CamposOliveira,Fábio Soares deVarajão,Angélica Fortes Drummond ChicarinoSoares,Caroline Cibele Vieiraeng2017-11-07T00:00:00Zoai:scielo:S0100-06832017000100314Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=0100-0683&lng=es&nrm=isohttps://old.scielo.br/oai/scielo-oai.php||sbcs@ufv.br1806-96570100-0683opendoar:2017-11-07T00:00Revista Brasileira de Ciência do Solo (Online) - Sociedade Brasileira de Ciência do Solo (SBCS)false |
dc.title.none.fl_str_mv |
Genesis of Soils from Bauxite in Southeastern Brazil: Resilication as a Soil-Forming Process |
title |
Genesis of Soils from Bauxite in Southeastern Brazil: Resilication as a Soil-Forming Process |
spellingShingle |
Genesis of Soils from Bauxite in Southeastern Brazil: Resilication as a Soil-Forming Process Mateus,Ana Carolina Campos pedogenesis Ferralsol kaolinite micromorphology |
title_short |
Genesis of Soils from Bauxite in Southeastern Brazil: Resilication as a Soil-Forming Process |
title_full |
Genesis of Soils from Bauxite in Southeastern Brazil: Resilication as a Soil-Forming Process |
title_fullStr |
Genesis of Soils from Bauxite in Southeastern Brazil: Resilication as a Soil-Forming Process |
title_full_unstemmed |
Genesis of Soils from Bauxite in Southeastern Brazil: Resilication as a Soil-Forming Process |
title_sort |
Genesis of Soils from Bauxite in Southeastern Brazil: Resilication as a Soil-Forming Process |
author |
Mateus,Ana Carolina Campos |
author_facet |
Mateus,Ana Carolina Campos Oliveira,Fábio Soares de Varajão,Angélica Fortes Drummond Chicarino Soares,Caroline Cibele Vieira |
author_role |
author |
author2 |
Oliveira,Fábio Soares de Varajão,Angélica Fortes Drummond Chicarino Soares,Caroline Cibele Vieira |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Mateus,Ana Carolina Campos Oliveira,Fábio Soares de Varajão,Angélica Fortes Drummond Chicarino Soares,Caroline Cibele Vieira |
dc.subject.por.fl_str_mv |
pedogenesis Ferralsol kaolinite micromorphology |
topic |
pedogenesis Ferralsol kaolinite micromorphology |
description |
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. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100314 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100314 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/18069657rbcs20160507 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Ciência do Solo |
publisher.none.fl_str_mv |
Sociedade Brasileira de Ciência do Solo |
dc.source.none.fl_str_mv |
Revista Brasileira de Ciência do Solo v.41 2017 reponame:Revista Brasileira de Ciência do Solo (Online) instname:Sociedade Brasileira de Ciência do Solo (SBCS) instacron:SBCS |
instname_str |
Sociedade Brasileira de Ciência do Solo (SBCS) |
instacron_str |
SBCS |
institution |
SBCS |
reponame_str |
Revista Brasileira de Ciência do Solo (Online) |
collection |
Revista Brasileira de Ciência do Solo (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Ciência do Solo (Online) - Sociedade Brasileira de Ciência do Solo (SBCS) |
repository.mail.fl_str_mv |
||sbcs@ufv.br |
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1752126521311494144 |