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ABSTRACT
Chemical properties; sand, silt and clay mineralogy; and particle size distributions are compared and found to support the concept that Lexington, Wellston, Bewleyville, and Dewey soil series were developed in wiedly different residua overlain by a rather uniform loess mantle. Data presented indicate greater weathering of the loess mantle when it is underlain by coarser textured residual material as well as illuviation of materials from the loess mantle into and/or through the coarse textured residuum. Thinner loess overlays tend to exhibit significant mixing with underlying materials from the residuum.
1 The investigation reported in this paper (no. 64-3-54) is in connection with a project of the Kentucky Agr. Exp. Sta. and is published with approval of the Director. Presented before joint meeting of Div. S-2 and S-5, Soil Science Society of America, at Denver, Colo., Nov. 19, 1963. Appreciation is expressed to M. G. Stout for his assistance in sample collection and certain chemical determinations. The assistance and cooperation of the USDA, Soil Conservation Service correlation staff personnel is gratefully acknowledged. The authors particularly thank J. H. Winsor, Senior Soil Correlator, USDA, SCS, for his suggestion of and interest in this study.
2 Associate Professors of Agronomy.
Received for publication August 12, 1964. Accepted for publication April 27, 1965.
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