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Lanthanum and Scandium Distribution in Three Glacial Soils of Western Wisconsin¹

ABSTRACT

Neutron activation analysis was used to deterimne the total La and Sc content of three soils developed from loess-capped glacial till. The profiles were classified as Gray-Brown Podzolics (Hapludalfs) overlying paleosols developed in Rockain till. The total La content in the less than 250µ fraction of these soils ranged from 18.1 to 37.1 ppm, with an average content of 23.7 ppm in the loess and 28.5 ppm in the glacial till. Total Sc in the soils ranged from 5.1 to 10.9 ppm with average contents of 6.5 and 9.0 ppm in the loess and glacial till, respectively. Translocation by pedogenic processes was indicated by the accumulation of these elements in the argillic B horizons. Correlation coefficients of La and Sc with clay percentages in the profiles were 0.79 and 0.88, respectively.

¹ Presented before Div. S-5, Soil Science Society of America, Washington, D.C., Nov. 9, 1967. Research supported by the United States Atomic Energy Commission.

² Associate Ecologist, Argonne National Lab., Argonne, Ill., Assistant Professor, Department of Agronomy, University of Maryland, College Park, and Associate Electronics Engineer, Argonne National Lab., Argonne, Ill.

Received for publication May 25, 1968. Accepted for publication December 2, 1968.