On soil genesis in temperate humid climate. VII. The formation of a glossaqualf in a silt-loam terrace deposit.

Abstract

The physical, chemical and micromorphological properties of a poorly drained soil profile developed on clayey parent material covered by a thin layer of loess are described. Clay skins on peds were absent in the B-horizon which is considered to be of Pleistocene age. In thin sections, however, oriented clay was observed inside peds occurring undisturbed as free grain and channel argillans, and disturbed by pedoturbation as quasicutans and papules. Clay was leached vertically through the B horizon along planar voids between prisms, leaving accumulations of skeleton grains. Some clay was also leached from the A2 horizon. Kaolinite was more mobile than illite or smectite. Reduction processes resulted in strongly bleached areas around prisms and in well developed mangans on ped faces and around channels. The profile was classified as an aerie glossaqualf. (Abstract retrieved from CAB Abstracts by CABI’s permission)

On soil genesis in temperate humid climate. VIII. The formation of a "udalfic" eutrochrepi.

“…This phenomenon was also ob served in some Ultisols and Alfisols by Slager and van Schuylenborgh (1970) and van Schuylenborgh (see : Möhr and van Baren, in prep.) ; it was observed in Dutch soils by Bouma et al (1968) and Bouma and van Schuylenborgh (1969). This is also in accordance with the experimental results of Hallsworth (1963).…”

“…In the southern part of the Netherlands relatively large areas with Pleistocene loess deposits occur, in which Alfisols have developed (e.g. Bouma et al, 1968 ;Bouma and van Schuylenborgh, 1969). These Alfisols commonly contain ferriargillans with a con tinuous orientation pattern (Fig.…”