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II. ANALYTICAL DATA
Publication year - 1964
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1964.tb02223.x
Subject(s) - cation exchange capacity , saturation (graph theory) , horizon , chemistry , soil horizon , base (topology) , aluminium , remainder , geology , mineralogy , soil science , environmental chemistry , soil water , mathematics , geometry , mathematical analysis , arithmetic , combinatorics , organic chemistry
Summary The three profiles occurring at the highest levels are moderately fine‐textured and the remainder are coarse‐textured. Sandy topsoils are a feature of the whole catena. Low values of cation‐exchange capacity indicate two‐layer clay minerals. High anion‐exchange capacity values in profile I (highest level) indicate surfaceactive sesquioxides. Low percentage base saturation and high exchangeable A1 distinguish the hill‐top profiles from the remainder. This distinction is much less clearly shown by pH values. An eluvial horizon at shallow depth is distinguished by low base saturation and relatively high exchangeable Al values. Exchangeable bases from this horizon have probably been carried upwards by plants to enrich surface layers. High values of mobile iron are found only in topsoils indicating that iron enters the vegetation cycle. By contrast, high values of mobile A1 are associated with subsoils above the ground‐water table and topsoils only of profiles 6 and 7. Mobile aluminium is correlated with soluble silicon and cationexchange capacity.