Gley formation

Bloomfield C. 1951. Experiments on the mechanism of gley formation. Journal of Soil Science 2 196-211. 

Ottow ICG. 1973. Bacterial mechanism of iron reduction and gley formation. In Schlicht-ing E, Schwertmann U, eds. Pseudogley and Gley. Weinheim International Soil Science Society, 29-35. 

Schlichting, E. (1965) Die Raseneisenbildung in der nordwestdeutschen Podsol-Gley-Land-schaft. Chemie der Erde 24 11-26 Schmalz, R.F. (1959) Formation of red beds in modern and ancient deserts. Discussion. Geol. Soc. Am. Bull. 79 277-280 Schmidt, P.W. (1990) Small-angle scattering studies of disordered, porous and fractal systems. J. Appl. Cryst. 24 414-435 Schmucki, P. Virtanen, S. Davenport, A. Vitus, C.M. (1996) J. Electrochem. Soc. 144 ... 

The excessive ground humidity is favorable to tbe formation of gley soils in Boreal forest ecosystems. Clay-podzolic soils with a massive forest litter layer provide the conditions for low water saturation. In high water-saturated conditions, a peat horizon... 

In A horizons, some Fe and Mn can also be precipitated around plant roots. In many wetland plants, reddish-brown layers are seen around the roots, as a result of Fe oxidation and subsequent precipitation. This can also result in mottle formation along the channels of plant roots with surrounding gleyed soil. Root zone oxidation is most visible in completely reduced and gleyed soils, where they appear on red to yellow mottles. 

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