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RELATIONSHIPS BETWEEN NET REDISTRIBUTION OF Al AND Fe AND EXTRACTABLE LEVELS IN PODZOLIC SOILS DERIVED FROM LOWER PALAEOZOIC SEDIMENTARY ROCKS
Author(s) -
ADAMS W. A.,
RAZA M. A.,
EVANS L. J.
Publication year - 1980
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.1365-2389.1980.tb02102.x
Subject(s) - paleozoic , sedimentary rock , redistribution (election) , geology , soil water , ironstone , geochemistry , anoxic waters , mineralogy , soil science , politics , political science , law , oceanography
Summary Examination of the translocation and net redistribution of Al and Fe in podzolic soils on Lower Palaeozoic sedimentary rocks has shown marked differences in behaviour between the two elements. Iron exhibits the classical pattern of eluviation and illuviation, the consequences of which are closely correlated with amounts of ‘active’ Fe extracted with pyrophosphate. On the other hand Al rarely accumulates in B horizons enriched in Fe. In addition pyrophosphate‐extractable Al is unrelated to its net redistribution pattern. Stagnopodzols on Lower Palaeozoic sediments are strongly acidic throughout and show a characteristic trend in oxidation/reduction conditions with depth. It is the differential response of Al and Fe to the combination of these properties, particularly in relation to their effect on illuviation, which accounts for the observations.