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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
16/05/2018 |
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Data da última atualização: |
11/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
COSTA, E. U. C. da; SANTOS, J. C. B. dos; AZEVEDO, A. C. de; ARAUJO FILHO, J. C. de; CORRÊA, M. M.; NEVES, L. V. de M. W.; VIDAL-TORRADO, P.; SOUZA-JÚNIOR, V. S. de. |
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Afiliação: |
EDIVAN UCHÔA CAVALCANTI DA COSTA, UFRPE; JEAN CHEYSON BARROS DOS SANTOS, UFRPE; ANTONIO CARLOS DE AZEVEDO, ESALQ-USP; JOSE COELHO DE ARAUJO FILHO, CNPS; MARCELO METRI CORRÊA, UFRPE; LAÉRCIO VIEIRA DE MELO WANDERLEY NEVES, UFRPE; PABLO VIDAL-TORRADO, ESALQ-USP; VALDOMIRO SEVERINO DE SOUZA-JÚNIOR, UFRPE. |
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Título: |
Mineral alteration and genesis of Al-rich soils derived from conglomerate deposits in Cabo Basin, NE Brazil. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Catena, v. 167, p. 198-211, Aug. 2018. |
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DOI: |
https://doi.org/10.1016/j.catena.2018.04.039 |
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Idioma: |
Inglês |
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Conteúdo: |
In the Cabo Basin, NE Brazil, conglomerates have given rise to soils with attributes that are rarely observed in humid tropical climates and remain relatively unknown within the scientific community. These soils have high levels of Al in the exchangeable phase, diminishing their agricultural and environmental potential in an underdeveloped region of great socioeconomic importance. This paper presents the mineralogy and genesis of soils derived from conglomerates on a slope in the Cabo Basin, with the aim of meeting the demand for studies on Al-rich soils. Three soils were classified, morphologically described and sampled for the accomplishment of chemical, physical and mineralogical analyses, including the main exchangeable cations content, mineralogy of the sand, silt and clay fraction, differentiation of the Fe and Al forms, mineral micromorphology and chemical composition of mineral species. In addition, chemical and physical attributes were used in multivariate analyses. The soil mineralogy is associated with the weathering evolution of three mineralogical zones identified in the Cr horizons. Pathways of alteration followed by feldspars and micas resulted in kaolinite, smectite and hydroxy-Al interlayered smectite formation (argilification). The susceptibility of the conglomerate to weathering, constant releases of Al from the structure of aluminous minerals, low contents of exchangeable bases and consequent low pH values (<5.3) were associated with high levels of exchangeable Al. At the highest position on the slope, a C/Cr transitional horizon provided evidence of the pedogenesis advance on the Cr horizon. Pedogenetic processes then resulted in morphological, physical and mineralogical differentiation between the A and Bt horizons. In addition, a cluster analysis showed similarities between attributes of the Bt and Cr horizons due to their genetic relationships. MenosIn the Cabo Basin, NE Brazil, conglomerates have given rise to soils with attributes that are rarely observed in humid tropical climates and remain relatively unknown within the scientific community. These soils have high levels of Al in the exchangeable phase, diminishing their agricultural and environmental potential in an underdeveloped region of great socioeconomic importance. This paper presents the mineralogy and genesis of soils derived from conglomerates on a slope in the Cabo Basin, with the aim of meeting the demand for studies on Al-rich soils. Three soils were classified, morphologically described and sampled for the accomplishment of chemical, physical and mineralogical analyses, including the main exchangeable cations content, mineralogy of the sand, silt and clay fraction, differentiation of the Fe and Al forms, mineral micromorphology and chemical composition of mineral species. In addition, chemical and physical attributes were used in multivariate analyses. The soil mineralogy is associated with the weathering evolution of three mineralogical zones identified in the Cr horizons. Pathways of alteration followed by feldspars and micas resulted in kaolinite, smectite and hydroxy-Al interlayered smectite formation (argilification). The susceptibility of the conglomerate to weathering, constant releases of Al from the structure of aluminous minerals, low contents of exchangeable bases and consequent low pH values (<5.3) were associated with high levels of exchan... Mostrar Tudo |
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Thesagro: |
Alumínio; Hidróxido de Alumínio; Solo. |
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Thesaurus NAL: |
Aluminum hydroxide; Exchangeable aluminum; Hydroxy-interlayered minerals; Saprolite; Smectite; Soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02897naa a2200325 a 4500
001 2091480
005 2021-11-11
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.catena.2018.04.039$2DOI
100 1 $aCOSTA, E. U. C. da
245 $aMineral alteration and genesis of Al-rich soils derived from conglomerate deposits in Cabo Basin, NE Brazil.$h[electronic resource]
260 $c2018
520 $aIn the Cabo Basin, NE Brazil, conglomerates have given rise to soils with attributes that are rarely observed in humid tropical climates and remain relatively unknown within the scientific community. These soils have high levels of Al in the exchangeable phase, diminishing their agricultural and environmental potential in an underdeveloped region of great socioeconomic importance. This paper presents the mineralogy and genesis of soils derived from conglomerates on a slope in the Cabo Basin, with the aim of meeting the demand for studies on Al-rich soils. Three soils were classified, morphologically described and sampled for the accomplishment of chemical, physical and mineralogical analyses, including the main exchangeable cations content, mineralogy of the sand, silt and clay fraction, differentiation of the Fe and Al forms, mineral micromorphology and chemical composition of mineral species. In addition, chemical and physical attributes were used in multivariate analyses. The soil mineralogy is associated with the weathering evolution of three mineralogical zones identified in the Cr horizons. Pathways of alteration followed by feldspars and micas resulted in kaolinite, smectite and hydroxy-Al interlayered smectite formation (argilification). The susceptibility of the conglomerate to weathering, constant releases of Al from the structure of aluminous minerals, low contents of exchangeable bases and consequent low pH values (<5.3) were associated with high levels of exchangeable Al. At the highest position on the slope, a C/Cr transitional horizon provided evidence of the pedogenesis advance on the Cr horizon. Pedogenetic processes then resulted in morphological, physical and mineralogical differentiation between the A and Bt horizons. In addition, a cluster analysis showed similarities between attributes of the Bt and Cr horizons due to their genetic relationships.
650 $aAluminum hydroxide
650 $aExchangeable aluminum
650 $aHydroxy-interlayered minerals
650 $aSaprolite
650 $aSmectite
650 $aSoil
650 $aAlumínio
650 $aHidróxido de Alumínio
650 $aSolo
700 1 $aSANTOS, J. C. B. dos
700 1 $aAZEVEDO, A. C. de
700 1 $aARAUJO FILHO, J. C. de
700 1 $aCORRÊA, M. M.
700 1 $aNEVES, L. V. de M. W.
700 1 $aVIDAL-TORRADO, P.
700 1 $aSOUZA-JÚNIOR, V. S. de
773 $tCatena$gv. 167, p. 198-211, Aug. 2018.
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