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Changes in the Clay Content, Calcium Carbonate Equivalent, and Calcium/Magnesium Ratio With Depth in Parent Materials of Soils Derived from Calcareous Till of Wisconsin Age
Author(s) -
Wenner Kenneth A.,
Holowaychuk N.,
Schafer George M.
Publication year - 1961
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/sssaj1961.03615995002500040025x
Subject(s) - calcareous , calcium carbonate , magnesium , mineralogy , carbonate , geology , calcium , soil water , calcareous soils , clay minerals , chemistry , soil science , paleontology , organic chemistry
Several depth samplings of parent materials (medium and moderately fine‐textured calcareous till) of each of 42 soil profiles were analyzed for clay content, CaCO 3 equivalent and the quantities of Ca and Mg extractable with acid. As a rule the clay content decreased, and the CaCO 3 equivalent content and the Ca/Mg ratio increased with depth in the upper 30 inches. Little or no variation in the respective values of these properties were observed below this depth. On basis of this work, samples for characterization of calcareous Wisconsin till materials should be collected at about 30 inches below the point of initial effervescence.