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(Article of periodic en Anglais - 2012)

Document title

Formation mechanisms and control factors of vesicular soil structure

Authors(s) and Affiliation(s)

DIETZE M. (1) ; BARTEL S. (1) ; LINDNER M. (2) ; KLEBER A. (1) ;
(1) Inst. of Geography, Technische Univ., Dresden, ALLEMAGNE
(2) Inst. of Geography, Univ., Innsbruck, AUTRICHE

Abstract

Vesicular structure is a widespread feature of soils in arid environments. To test existing models, to infer plausible mechanisms of vesicular structure formation and to unveil controlling environmental and sedimentological parameters, the AA. present quantitative data of vesicle properties of artificial and natural vesicles. They form due to surface sealing by puddling and by a wetting front, which advances downward, thereby elevating gas pressure within the sediment matrix. Translocation of clay or precipitation of calcium carbonate support vesicle stabilisation. The main limiting factor for vesicle formation in natural environments is root activity. The type and density of surface cover determine fine material fluxes into the aggregates of vesicular horizons. The shape of vesicles may be related to dust influx intensity

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2012, vol. 99 [pp. 83-96]

Bibliographic references : 1 p.

Collation : 11 fig., 2 tabl., 1 annexe

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.06.011

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