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Clay Minerals in Some Illinois Soils Developed from Loess and Till Under Grass Vegetation

Published online by Cambridge University Press:  01 January 2024

A. H. Beavers ,
W. D. Johns ,
R. E. Grim  and
R. T. Odell
A. H. Beavers
Affiliation:
University of Illinois, USA
W. D. Johns
Affiliation:
University of Illinois, USA
R. E. Grim
Affiliation:
University of Illinois, USA
R. T. Odell
Affiliation:
University of Illinois, USA
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Abstract

Clay mineral analyses were made of three groups of soil profiles — one developed from Peorian loess overlying Illinoian till — one associated with glacial till of Wisconsin age — one developed on deep to thin loess overlying Wisconsin till. These groups were investigated to determine the influence of parent material and intensity of weathering upon the soil profile development and clay mineral composition.

Montmorillonite, illite, and chlorite are the dominant clay minerals in all the samples studied. In known loess samples, montmorillonite is invariably the most abundant clay mineral component. In the samples of unweathered till of Wisconsin age, illite and chlorite are the abundant clay minerals.

Type
Article
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 3 , February 1954 , pp. 356 - 372
Copyright
Copyright © The Clay Minerals Society 1954

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References

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