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Document: Tiré à part de revue

Nature and genesis of spodic horizons characterized by inverted color and organic content in a subalpine podzolic soil (Pyrenees Mountains, France) / Mireille Remaury (2002)

est un tiré à part de 173 (1) - January 2002 (Bulletin de la Société géologique de France)

Titre :	Nature and genesis of spodic horizons characterized by inverted color and organic content in a subalpine podzolic soil (Pyrenees Mountains, France)
Type de document :	Tiré à part de revue
Auteurs :	Mireille Remaury ; Priscia Oliva ; Bernard Guillet ; Francis Martin (1954-) ; François Toutain ; Joseph Dagnac ; Jean-Marc Belet ; Bernard Dupré ; Thierry Gauquelin (1954-)
Année de publication :	2002
Importance :	77-86
Langues :	Anglais (eng)
Catégories :	[CBNPMP-Thématique] Pédogenèse [CBNPMP-Géographique] Pyrénées
Résumé :	Podzolic soils showing an inverted sequence between Bh and Bs horizons have been recently described in the French Pyrenees. This paper deals with the spodic characters of two inverted podzol profiles found in the granitic Estibère valley. Taking into consideration a coherent genesis of these soils, we perform this study through a multidisciplinary approach (e.g., pedology, mineralogy). We describe the evolution of the different forms of free iron and aluminum in relation to organic constituents and the mineralogical characteristics of the soil. Spodic criteria indicate that those soils could be classified as podzolic soils. The study of the spodic horizons show the existence of an ochrous horizon “BP1”, rich in immobilized forms of iron (i.e., amorphous and partially crystallized forms). It overlies a darker chocolate colored horizon “BP2” rich in organic-complexed aluminum, aluminosilicate gels and humic constituents, particularly humic acids. We explain the organic accumulation in the deep “BP2” as the result of particular seasonal hydrologic processes related to the geomorphologic and climatogenic situations of the soils profiles.
Identifiant :	DOI : 10.2113/173.1.77
Permalink :	https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=130745

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
11052	Remaury M.	Tiré à part	Centre de documentation	Tirés à part	Consultable