(Article of periodic en Anglais - 2013)

Document title

Lamellae formation processes in tropical soils in southeastern Brazil

Authors(s) and Affiliation(s)

(1) Dep. de Geografia, Univ., São Paulo, BRESIL
(2) Inst. de Estudos Sócio-Ambientais, Univ. Federal de Goiás (UFG), Goiânia, BRESIL
(3) Dep. de Ciência do Solo, Univ. de São Paulo (USP), Piracicaba, BRESIL


The AA. investigated soils along a toposequence containing lamellae formed both by illuviation and Bt degradation. The soils were described and sampled along a hillslope in the São Pedro region, São Paulo state, and submitted to physical (particle size), chemical (pH and exchangeable cations), and micromorphological analyses. The lamellae, Bt, curved links, and spots present similar micromorphological characteristics and only a few illuvial features, which suggest a genetic relationship between lamellae and the Bt horizon and minimize the importance of clay illuviation. The origin of these lamellae is related to the degradation of Bt and clay eluviation by subsurface lateral flows. This process seems to be an important way of lamellae formation under tropical climate and should thus be incorporated into the term pedogenic lamellae, which is usually associated in the international literature with lamellae formed by clay illuviation


Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 107 [pp. 15-25]

Bibliographic references : 1 p.

Collation : 4 fig., 5 tabl.



INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2013.03.005

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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