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Distribution of Sc, Cr, Co, Hf, Ta and Th in a weathering profile of gabbroic rocks (Serpa, Portugal)

  • Applications of Radioanalytical Methods to Geological and Environmental Science
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Abstract

Trace element data (Sc, Cr, Co, Hf, Ta and Th) are reported for a weathering profile of gabbroic rocks located near Serpa, Portugal. The results obtained for the whole rock samples showed that: (i) Co and Sc contents decrease upwards the profile. Co appears to be mobilized in the soil probably as soluble cation; (ii) Cr tends to remain in the profile; and (iii) Hf and Th concentrate in the upper horizons. Trace element distribution in different size fractions of the upper horizons revealed: (i) Sc, Cr and Co have a more uniform distribution than Hf, Ta and Th; (ii) Hf and Ta are concentrated in the intermediate fractions; and (iii) Th is concentrated in the finer fractions, probably due to incorporation in weathering resistant minerals, specially in the initial stages of weathering.

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Authors and Affiliations

  1. Departamento de Quimica, ICEN, LNETI, 2685, Sacavém, Portugal

    M. A. Gouveia, M. I. Prudencio, I. Morgado & J. M. P. Cabral

  2. Departamento de Tecnologia de Materiais, ITM, LNETI, Azinhaga dos Lameiros, 1699, Lisboa codex, Portugal

    M. T. Magalhaes

Authors
  1. M. A. Gouveia
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  2. M. I. Prudencio
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  3. I. Morgado
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  4. M. T. Magalhaes
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  5. J. M. P. Cabral
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Gouveia, M.A., Prudencio, M.I., Morgado, I. et al. Distribution of Sc, Cr, Co, Hf, Ta and Th in a weathering profile of gabbroic rocks (Serpa, Portugal). Journal of Radioanalytical and Nuclear Chemistry, Articles 161, 245–252 (1992). https://doi.org/10.1007/BF02034898

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  • DOI: https://doi.org/10.1007/BF02034898

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