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Distribution of Silica, Sesquioxides, and Clay in Quebec Podzolic Soils and Their Effects on Subsoil Cementation
Author(s) -
De Kimpe C. R.,
Laverdiere M. R.,
Dejou J.
Publication year - 1983
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1983.03615995004700040044x
Subject(s) - subsoil , cementation (geology) , soil water , soil science , soil horizon , horizon , topsoil , chemistry , mineralogy , environmental chemistry , geology , cement , materials science , metallurgy , mathematics , geometry
Three soil profiles containing two types of brittle horizons were extracted using citrate‐hicarbonate‐dithionite (CBD), a modified CBD, and NaOH procedures. The modified CBD method with a low soil‐solution ratio was the most effective extractant for Fe, Al, and, especially, Si. Increases in extractable Si could be associated with the presence of a fragipan‐duripan intergrade horizon, but a similar relationship was not observed with a well‐expressed fragipan.