Field Studies of a Clay‐Enriched Horizon in the Lowest Part of the Solum of Some Brunizem and Gray‐Brown Podzolic Soils in Illinois

Abstract

The morphology, range in expression, and occurrence are described of a clay-enriched layer (Beta horizon) found below the B 2 horizon of selected soils in the area of Wisconsin glaciation in northern Illinois. The Beta horizon, characterized by a darker color and an abrupt, irregular lower boundary, was more pronounced in coarser textured drift, in Gray-Brown Podzolic soils, and in well-drained members of soil catenas.

New insights into the origin and evolution of glossic features in coarse‐textured soils in northern lower Michigan (USA)

“…Because the base of the Bt2 horizon marks the lower boundary of the solum, however, the textural contrast has apparently impeded further vertical advancement of pedogenic processes, particularly translocation, assumedly due to its effect on water flow. Differences in hydraulic tensions between the materials has likely facilitated “hanging” of the wetting front at or near the textural contrast during percolation events, leading to preferential accumulation of translocated materials to form, and/or reinforce development of, the Bt horizons (Bartelli & Odell, 1960; Khakural et al., 1993; Schaetzl, 1996, 1998).…”

Development of a clay-rich interval above a limestone substrate in the Condroz region of southern Belgium

“…The fabric of the C3 horizon is typical of that of beta horizons, referring to horizons with clay accumulation at levels below a Bt horizon (Bartelli and Odell, 1960a). Originally defined for profiles with a calcareous gravel substrate, beta horizons have subsequently mainly been described for soils on limestone (e.g.…”

The Detection of Ferromagnetic Minerals in Soils and Clays

“…The soil series has been described by Kay B t : 4B is a beta horizon as described by Bartelli andOde11 (1960a), (1960b). (1945).…”