CARACTERIZAÇÃO DOS LATOSSOLOS DA CHAPADA DE ARAGUARI: MINERAIS ARGILOSOS, GRANULOMETRIA E EVOLUÇÃO

Autores

  • Luiz Antônio de Oliveira Mestrando em Geologia (UnB)

DOI:

https://doi.org/10.14393/RCG4815302

Palavras-chave:

latosols, weathering, mineral , X-ray diffraction

Resumo

The mineralogical composition of the latosols in the study area as determined by X-ray diffraction. Kaolinite and goethite is the dominant mineral in all profile (dark red, red-yellow and lateritic soils). Gibbsite is a common mineral present in the upper part of the profile (dark red and redyellow soils), while in the lateritic soil occur only in the "matriz� fraction. Hematite happens in the topsoils (dark red and red-yellow soils). Quartz dominates the coarse fraction in all materials and shows a higher variability in sizes, although it is predominantly fine sand-size. Anatase were also detected in the topsoil. The mineralogical composition of the materials indicates a high degree of weathering of the parent material, wich caracteristic for oxisols in the humid tropics.

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Publicado

28-02-2003

Como Citar

OLIVEIRA, L. A. de. CARACTERIZAÇÃO DOS LATOSSOLOS DA CHAPADA DE ARAGUARI: MINERAIS ARGILOSOS, GRANULOMETRIA E EVOLUÇÃO. Caminhos de Geografia, Uberlândia, MG, v. 4, n. 8, p. 20–37, 2003. DOI: 10.14393/RCG4815302. Disponível em: https://seer.ufu.br/index.php/caminhosdegeografia/article/view/15302. Acesso em: 28 nov. 2022.

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