Nonconcretionary neoformations in soils of humidic landscapes and their diagnostic importance

A close relationship is established between the origin of nonconcretionary neoformations in soils and current soil-forming processes, the chemical com position of groundwater, and the degree of soil hydromorphism. The diagnost ic importance of iron lamellae (pseudofibers, ortsands), humus-ferric-alumi num cementation zones, meadow chalk and marl, amorphous accumulations of ir on and manganese hydroxides, and other nonconcretionary neoformations is re vealed. A classification of these neoformations based on the assessment of their morphogenetic and chemical properties is suggested.