HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Bushue, L. J. Articles by Ray, B. W. Search for Related Content PubMed Articles by Bushue, L. J. Articles by Ray, B. W. Agricola Articles by Bushue, L. J. Articles by Ray, B. W.

Exhumed Paleosols and Associated Modern Till Soils in Western Illinois¹

ABSTRACT

Exhumed paleosols and modern soils formed in Illinoian and/or Kansan till occur in a complex pattern in many places on the sides of incised valleys in predominantly loess covered regions in western Illinois and adjacent states. The paleosols studied in western Illinois are thicker, finer textured, grayer and more poorly drained, and more impermeable than the modern soils formed during late Pleistocene and Recent weathering. However, the paleosols and modern soils do not differ greatly in chemical properties.

The presence of highly contrasting paleosols and modern till soils on the same slope not only cause problems in soil mapping, but because of side-hill seepage, and the fine texture and poor physical condition of the paleosols, difficult problems in soil management also exist. The use of soil complexes, undifferentiated units, or the inclusion of strongly contrasting soils in given mapping units is necessary to show these soil conditions on many slopes.

¹ Contribution from the Department of Agronomy, University of Illinois, Urbana.

² Soil Scientist, Soil Conservation Service, USDA: Professor and Assistant Professor of Pedology, respectively, University of Illinois.

Received for publication November 24, 1969. Accepted for publication March 10, 1970.