Mineralogy, magnetic susceptibility and geochemistry of Fe-rich Oxisols developed from several parent materials
Main Author: | |
---|---|
Publication Date: | 2018 |
Other Authors: | , , , , |
Format: | Article |
Language: | eng |
Source: | Scientia Agrícola (Online) |
Download full: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000500410 |
Summary: | ABSTRACT: Fe-rich Oxisols on mafic rocks in Brazil generally have high magnetic susceptibility with high contents of some trace elements. These are taxonomically similar soils; however, differences in magnetic and geochemical properties may affect agricultural or environmental usability and subsequent management. This study investigated the pedogenesis of Fe-rich Oxisols from various parent materials and evaluated the lithogenetic influence on magnetic susceptibility and trace elements contents. Soil samples were collected from Bw horizons in 13 Rhodic Oxisols and a Typic Oxisol developed from several parent materials in Minas Gerais State, Brazil. Soils were analyzed by X-ray diffractometry (XRD) and magnetometry. Soil chemical analyses consisted of sulfuric and total (tri-acid) digestions and selective Fe oxides dissolutions and statistical correlations were determined. Fe-rich Oxisols presented a typical mineralogical composition of highly weathered soils with structural stability. The results confirm the difficulty to identify accurately magnetic minerals in different grain sizes using XRD. However, coarse fractions still exert dominant influence on the magnetic properties of the Fe-rich Rhodic Oxisols. In addition, coarse fractions probably contribute to the enrichment of superparamagnetic particles for the clay fraction. Although highly weathered, Fe-rich Oxisols may have their geochemical attributes still controlled by the parent material, where trace elements seem to be correlated with the magnetic minerals in the coarse fractions. Thus, the natural replacement of some trace elements from soil-solution equilibrium reactions during plant development could be more effective in soils with higher magnetic particles concentrations in the coarse fractions. |
id |
USP-18_54cdf998548325a3df3597869fa2eef4 |
---|---|
oai_identifier_str |
oai:scielo:S0103-90162018000500410 |
network_acronym_str |
USP-18 |
network_name_str |
Scientia Agrícola (Online) |
repository_id_str |
|
spelling |
Mineralogy, magnetic susceptibility and geochemistry of Fe-rich Oxisols developed from several parent materialsmagnetic soilsiron oxidesferrimagnetic mineralstrace elementsmafic rocksABSTRACT: Fe-rich Oxisols on mafic rocks in Brazil generally have high magnetic susceptibility with high contents of some trace elements. These are taxonomically similar soils; however, differences in magnetic and geochemical properties may affect agricultural or environmental usability and subsequent management. This study investigated the pedogenesis of Fe-rich Oxisols from various parent materials and evaluated the lithogenetic influence on magnetic susceptibility and trace elements contents. Soil samples were collected from Bw horizons in 13 Rhodic Oxisols and a Typic Oxisol developed from several parent materials in Minas Gerais State, Brazil. Soils were analyzed by X-ray diffractometry (XRD) and magnetometry. Soil chemical analyses consisted of sulfuric and total (tri-acid) digestions and selective Fe oxides dissolutions and statistical correlations were determined. Fe-rich Oxisols presented a typical mineralogical composition of highly weathered soils with structural stability. The results confirm the difficulty to identify accurately magnetic minerals in different grain sizes using XRD. However, coarse fractions still exert dominant influence on the magnetic properties of the Fe-rich Rhodic Oxisols. In addition, coarse fractions probably contribute to the enrichment of superparamagnetic particles for the clay fraction. Although highly weathered, Fe-rich Oxisols may have their geochemical attributes still controlled by the parent material, where trace elements seem to be correlated with the magnetic minerals in the coarse fractions. Thus, the natural replacement of some trace elements from soil-solution equilibrium reactions during plant development could be more effective in soils with higher magnetic particles concentrations in the coarse fractions.Escola Superior de Agricultura "Luiz de Queiroz"2018-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000500410Scientia Agricola v.75 n.5 2018reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/1678-992x-2017-0087info:eu-repo/semantics/openAccessCamêlo,Danilo de LimaKer,João CarlosFontes,Maurício Paulo FerreiraCosta,Antonio Carlos Saraiva daCorrêa,Marcelo MetriLeopold,Matthiaseng2018-05-04T00:00:00Zoai:scielo:S0103-90162018000500410Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2018-05-04T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Mineralogy, magnetic susceptibility and geochemistry of Fe-rich Oxisols developed from several parent materials |
title |
Mineralogy, magnetic susceptibility and geochemistry of Fe-rich Oxisols developed from several parent materials |
spellingShingle |
Mineralogy, magnetic susceptibility and geochemistry of Fe-rich Oxisols developed from several parent materials Camêlo,Danilo de Lima magnetic soils iron oxides ferrimagnetic minerals trace elements mafic rocks |
title_short |
Mineralogy, magnetic susceptibility and geochemistry of Fe-rich Oxisols developed from several parent materials |
title_full |
Mineralogy, magnetic susceptibility and geochemistry of Fe-rich Oxisols developed from several parent materials |
title_fullStr |
Mineralogy, magnetic susceptibility and geochemistry of Fe-rich Oxisols developed from several parent materials |
title_full_unstemmed |
Mineralogy, magnetic susceptibility and geochemistry of Fe-rich Oxisols developed from several parent materials |
title_sort |
Mineralogy, magnetic susceptibility and geochemistry of Fe-rich Oxisols developed from several parent materials |
author |
Camêlo,Danilo de Lima |
author_facet |
Camêlo,Danilo de Lima Ker,João Carlos Fontes,Maurício Paulo Ferreira Costa,Antonio Carlos Saraiva da Corrêa,Marcelo Metri Leopold,Matthias |
author_role |
author |
author2 |
Ker,João Carlos Fontes,Maurício Paulo Ferreira Costa,Antonio Carlos Saraiva da Corrêa,Marcelo Metri Leopold,Matthias |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Camêlo,Danilo de Lima Ker,João Carlos Fontes,Maurício Paulo Ferreira Costa,Antonio Carlos Saraiva da Corrêa,Marcelo Metri Leopold,Matthias |
dc.subject.por.fl_str_mv |
magnetic soils iron oxides ferrimagnetic minerals trace elements mafic rocks |
topic |
magnetic soils iron oxides ferrimagnetic minerals trace elements mafic rocks |
description |
ABSTRACT: Fe-rich Oxisols on mafic rocks in Brazil generally have high magnetic susceptibility with high contents of some trace elements. These are taxonomically similar soils; however, differences in magnetic and geochemical properties may affect agricultural or environmental usability and subsequent management. This study investigated the pedogenesis of Fe-rich Oxisols from various parent materials and evaluated the lithogenetic influence on magnetic susceptibility and trace elements contents. Soil samples were collected from Bw horizons in 13 Rhodic Oxisols and a Typic Oxisol developed from several parent materials in Minas Gerais State, Brazil. Soils were analyzed by X-ray diffractometry (XRD) and magnetometry. Soil chemical analyses consisted of sulfuric and total (tri-acid) digestions and selective Fe oxides dissolutions and statistical correlations were determined. Fe-rich Oxisols presented a typical mineralogical composition of highly weathered soils with structural stability. The results confirm the difficulty to identify accurately magnetic minerals in different grain sizes using XRD. However, coarse fractions still exert dominant influence on the magnetic properties of the Fe-rich Rhodic Oxisols. In addition, coarse fractions probably contribute to the enrichment of superparamagnetic particles for the clay fraction. Although highly weathered, Fe-rich Oxisols may have their geochemical attributes still controlled by the parent material, where trace elements seem to be correlated with the magnetic minerals in the coarse fractions. Thus, the natural replacement of some trace elements from soil-solution equilibrium reactions during plant development could be more effective in soils with higher magnetic particles concentrations in the coarse fractions. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-09-01 |
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=S0103-90162018000500410 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000500410 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1678-992x-2017-0087 |
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 |
Escola Superior de Agricultura "Luiz de Queiroz" |
publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
dc.source.none.fl_str_mv |
Scientia Agricola v.75 n.5 2018 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1748936464752705536 |