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Type: Artigo de periódico
Title: Paleoprecipitation Estimates And Genesis Of Calcic And Argillic Features In Paleosols Of The Marília Formation (neocretaceous Of The Bauru Basin) [estimativas De Paleoprecipitação E Gênese De Feições Cálcicas E Argílicas Em Paleossolos Da Formação Marília (neocretáceo Da Bacia Bauru)]
Author: Dal'Bo P.F.F.
Basilici G.
Abstract: This paper aims to investigate the genesis of calcic and argillic features which occur in paleosols of the Marília Formation. In a general sense, these features are concentrated in two paleosol horizons, the calcic features in Bk Aridisol horizons and argillic features in Bt Aridisol and Alfisol horizons. In this paper 19 paleosol profiles were studied and detail macro and micromorphological, geochemical, and SEM analyses were performed on 3 Bk and 11 Bt horizons. The paleoprecipitation estimates were inferred following two climofunctions, depth-to-carbonate from Bk and chemical composition from Bt horizons. By comparing the calcic and argillic features of these horizons with modern soil horizons this study demonstrates that these features were pedogenically formed and that paleoprecipitation was an important forcing factor in the genesis and principally in the differentiation of these features.
Rights: fechado
Identifier DOI: 
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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