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By R Lal
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Extra info for Encyclopedia of soil science
L. Acid sulphate soils: morphology and prediction. J. Soil Sci. 1980, 31 (1), 87–99. 76. ; Van Breemen, N. ; 1982; 37–51. 77. ; Driessen, P. Coastal sedimentary environments inﬂuencing the development of potential acidity in tidal swamps. , 1982; 1–18. Acid Sulfate Soils: Formation Martin C. Rabenhorst Delvin S. Fanning Steven N. A. INTRODUCTION Soils containing sulﬁde minerals that have not yet been oxidized through acid sulfate weathering are referred to as potential acid sulfate soils (potential acid SS).
7; Cambridge University Press: London, 1984; 107–122. 10. ; American Chemical Society: Washington, DC, 1995; 168–193. 24 11. C. Microbial reduction of manganese and iron. ; John Wiley and Sons: New York, 1988; 305–331. 12. C. Processes and rates of pedogenesis in some Maryland Tidal Marsh soils. Soil Sci. Soc. Am. J. 1989, 53, 862–870. 13. C. Micromorphology of induced iron sulﬁde formation in a Chesapeake Bay (USA) Tidal Marsh. ; Elsevier: Amsterdam, 1990; 303–310. 14. B. Soil Morphology, Genesis, and Classiﬁcation; John Wiley and Sons: New York, 1989; 395 pp.
Copyright © 2006 by Taylor & Francis It is clear that in environments which provide a source of oxidizable carbon and sulfate and which are sufﬁciently saturated to enhance reducing conditions, sulfate reducing bacteria will generate sulﬁde. If reactive iron is present, then solid phase ferrous minerals will accumulate. This process of sulﬁdization is shown schematically in Fig. 3. The obvious settings for these processes are coastal marine and brackish environments, where sulfate is abundant.