Soils developed from different volcanic rocks from the Fernando de Noronha island: rare-earth element patterns and isotopic lead composition

Authors

  • Sonia Maria Barros de Oliveira Universidade de São Paulo; Instituto de Geociências; Departamento de Mineralogia e Geotectônica
  • Luiz Carlos Ruiz Pessenda Universidade de São Paulo; Centro de Energia Nuclear na Agricultura
  • Marly Babinski Universidade de São Paulo; Instituto de Geociências; Departamento de Mineralogia e Geotectônica
  • Simone Maria Costa Lima Gioia Centro de Pesquisas Tecnológicas da Marinha
  • Deborah Inês Teixeira Fávaro Instituto de Pesquisas Energéticas e Nucleares; Comissão Nacional de Energia Nuclear

DOI:

https://doi.org/10.5327/Z1519-874X2011000300006

Keywords:

Soils, Fernando de Noronha island, Geochemistry, REE, Pb isotopes

Abstract

This study examines the influence of pedogenesis on the distribution of rare earth elements in soils derived from different rock types and formed under tropical humid climate, as well as the possible contribution of airborne Pb to these soils. We studied 5 soil profiles developed from different volcanic rocks cropping out in the Fernando de Noronha island. Results show that in the course of weathering, the soils were enriched in REE. The REE patterns of the soils are similar to those of the parent material, except for a slight HREE enrichment. Lead-isotope data indicate the presence of a nonradiogenic anthropogenic component in the upper horizons of the soil profiles.

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Published

2011-12-01

Issue

Vol. 11 No. 3 (2011)

Section

Articles

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How to Cite

Oliveira, S. M. B. de, Pessenda, L. C. R., Babinski, M., Gioia, S. M. C. L., & Fávaro, D. I. T. (2011). Soils developed from different volcanic rocks from the Fernando de Noronha island: rare-earth element patterns and isotopic lead composition . Geologia USP. Série Científica, 11(3), 97-105. https://doi.org/10.5327/Z1519-874X2011000300006