Micromorphology Features of a Soil Profile in the Pardo River Floodplain: Chronology and Weathering Processes in Alluvial Sediments.

Authors

  • Francisco Sergio Bernardes Ladeira
  • André Luiz de Souza Celarino

DOI:

https://doi.org/10.11606/rdg.v0ispe.132759

Keywords:

Soil micromorphology, weathering, Gleysol, Pardo Basin.

Abstract

Rates of soil formation exceed erosion/sedimentation in the humid tropics and might favor sediment weathering in floodplains even in poorly drained soils. The main objective of this study was to interpret the pedogenetic evolution in the floodplain of a portion in the Pardo river basin, proposing an analysis of the soil forming processes of the alluvial sediments on a time scale, focusing on micromorphology features. A soil profile was described and sampled in the field, grain size (pipette method), soil thin sections and optically stimulated luminescence (OSL) datings were obtained in laboratory. Results showed that B horizons with prismatic structure developed in a Gleysol in less than 1000 years from alluvial sediments, moreover, horizonation, gleization and an incipient process of laterization could be identified from soil micromorphology analysis in thin sections.

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Published

2017-06-27

Issue

Section

Artigos

How to Cite

Ladeira, F. S. B., & Celarino, A. L. de S. (2017). Micromorphology Features of a Soil Profile in the Pardo River Floodplain: Chronology and Weathering Processes in Alluvial Sediments. Revista Do Departamento De Geografia, spe, 249-258. https://doi.org/10.11606/rdg.v0ispe.132759