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Registro Completo |
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Biblioteca(s): |
Embrapa Solos; Embrapa Solos / UEP-Recife. |
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Data corrente: |
22/11/2002 |
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Data da última atualização: |
22/11/2002 |
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Autoria: |
FASOLO, P. J. |
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Título: |
Mineralogical identification of four igneous extrusive rock derived oxisols from the State of Parana, Brasil. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
s.l.: Purdue University, 1978. |
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Páginas: |
109p. |
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Idioma: |
Inglês |
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Notas: |
Tese Mestrado. |
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Conteúdo: |
Four oxisol profiles from the state of Parana were studied. They are derived from igneous extrusive rocks but located in different climatic zone within the state. The main objective was to accumulate information that would lead to a better understanding of subtropical and tropical oxisols from a classification viewpoint. The objective was accomplished by studying the physical, chemical and mineralogical properties of the four soil profiles. The soils were sampled in smooth landscapes in tropical and subtropical areas. The mean annual temperature ranges from 15.5C to 20.6C and the mean annual precipitation ranges from 1,400 to 1,900mm. Kaolinite, gibbsite and vermiculite-chlorite intergrade are the most common minerals in the clay size fractions of every profile. Quartz is the main mineral in the silt fraction and, together with opaque minerals (magnetite and ilmenite) predominates in the coarse and fine sand fractions of every profile. Hematite was detected only when free iron oxides were not removed by the citrate-bicarbonate-dithionite (CBD) treatment. The same was true for goethite. Based on the relative proporties of gibbsite in relation to kaolinite the degree of weathering was Profile 4 > Profile 39 > Profile 18 > Profile 61. A relatively strong 14 A peak that did not completely collapse upon heating to 500 oC indicated the presence of a vermiculite-chlorite intergrade in the A and B horizons of every profile. Since, only very weak diffractions of the same mineral were observed in the C horizons of the....... MenosFour oxisol profiles from the state of Parana were studied. They are derived from igneous extrusive rocks but located in different climatic zone within the state. The main objective was to accumulate information that would lead to a better understanding of subtropical and tropical oxisols from a classification viewpoint. The objective was accomplished by studying the physical, chemical and mineralogical properties of the four soil profiles. The soils were sampled in smooth landscapes in tropical and subtropical areas. The mean annual temperature ranges from 15.5C to 20.6C and the mean annual precipitation ranges from 1,400 to 1,900mm. Kaolinite, gibbsite and vermiculite-chlorite intergrade are the most common minerals in the clay size fractions of every profile. Quartz is the main mineral in the silt fraction and, together with opaque minerals (magnetite and ilmenite) predominates in the coarse and fine sand fractions of every profile. Hematite was detected only when free iron oxides were not removed by the citrate-bicarbonate-dithionite (CBD) treatment. The same was true for goethite. Based on the relative proporties of gibbsite in relation to kaolinite the degree of weathering was Profile 4 > Profile 39 > Profile 18 > Profile 61. A relatively strong 14 A peak that did not completely collapse upon heating to 500 oC indicated the presence of a vermiculite-chlorite intergrade in the A and B horizons of every profile. Since, only very weak diffractions of the same mineral were... Mostrar Tudo |
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Palavras-Chave: |
Idenficacao; Solos. |
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Thesagro: |
Mineralogia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02018nam a2200169 a 4500
001 1331067
005 2002-11-22
008 1978 bl uuuu m 00u1 u #d
100 1 $aFASOLO, P. J.
245 $aMineralogical identification of four igneous extrusive rock derived oxisols from the State of Parana, Brasil.
260 $as.l.: Purdue University$c1978
300 $a109p.
500 $aTese Mestrado.
520 $aFour oxisol profiles from the state of Parana were studied. They are derived from igneous extrusive rocks but located in different climatic zone within the state. The main objective was to accumulate information that would lead to a better understanding of subtropical and tropical oxisols from a classification viewpoint. The objective was accomplished by studying the physical, chemical and mineralogical properties of the four soil profiles. The soils were sampled in smooth landscapes in tropical and subtropical areas. The mean annual temperature ranges from 15.5C to 20.6C and the mean annual precipitation ranges from 1,400 to 1,900mm. Kaolinite, gibbsite and vermiculite-chlorite intergrade are the most common minerals in the clay size fractions of every profile. Quartz is the main mineral in the silt fraction and, together with opaque minerals (magnetite and ilmenite) predominates in the coarse and fine sand fractions of every profile. Hematite was detected only when free iron oxides were not removed by the citrate-bicarbonate-dithionite (CBD) treatment. The same was true for goethite. Based on the relative proporties of gibbsite in relation to kaolinite the degree of weathering was Profile 4 > Profile 39 > Profile 18 > Profile 61. A relatively strong 14 A peak that did not completely collapse upon heating to 500 oC indicated the presence of a vermiculite-chlorite intergrade in the A and B horizons of every profile. Since, only very weak diffractions of the same mineral were observed in the C horizons of the.......
650 $aMineralogia
653 $aIdenficacao
653 $aSolos
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Registro original: |
Embrapa Solos (CNPS) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
06/02/2007 |
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Data da última atualização: |
06/02/2007 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Circulação/Nível: |
-- - -- |
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Autoria: |
MONTOYA VILCAHUAMÁN, L. J.; DOSSA, D. |
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Título: |
Impactos econômicos e ambientais de sistemas de uso da terra com tecnologias e práticas conservacionistas. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: CONGRESO NACIONAL DE LA CIENCIA DEL SUELO, 9.; CONGRESO INTERNACIONAL DE LA CIENCIA DEL SUELO, 2., 2004, Cuzco, Perú. [S.l.]: Universidad Nacional San Antonio Abad del Cusco, 2004. |
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Páginas: |
p. 164-165. |
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Idioma: |
Português |
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Palavras-Chave: |
Sistema agroflorestal. |
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Thesagro: |
Impacto Ambiental; Impacto Econômico; Plantio Direto. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00706naa a2200181 a 4500
001 1313609
005 2007-02-06
008 2004 bl --- 0-- u #d
100 1 $aMONTOYA VILCAHUAMÁN, L. J.
245 $aImpactos econômicos e ambientais de sistemas de uso da terra com tecnologias e práticas conservacionistas.
260 $c2004
300 $ap. 164-165.
650 $aImpacto Ambiental
650 $aImpacto Econômico
650 $aPlantio Direto
653 $aSistema agroflorestal
700 1 $aDOSSA, D.
773 $tIn: CONGRESO NACIONAL DE LA CIENCIA DEL SUELO, 9.; CONGRESO INTERNACIONAL DE LA CIENCIA DEL SUELO, 2., 2004, Cuzco, Perú. [S.l.]: Universidad Nacional San Antonio Abad del Cusco, 2004.
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