Department of Soils, Punjab Agricultural University, Ludhiana, Punjab
*Present addresses: Department of Soil Science and Plant Nutrition, University of Western Australia, Nedlands, Australia; Department of Agronomy, Ohio State University, Columbus, U.S.A, and Bureau of Soil Studies and Design, SOSLR, Al-Mansur, Baghdad, Iraq, respectively.
Three soil series representing the Sutlej flood-plain and the Sutlej terrace soils have been studied to investigate the distribution and mineralogy of carbonates. The carbonate content of the flood-plain soil is high and varies irregularly with depth. The carbonate contents of the terrace soils are low and these are present only in the sub-surface horizons. Calcite is the carbonate mineral present in these soils. The carbonate nodules are observed only in the Sutlej terrace soils and a mechanism of their genesis is suggested.
Carbonate nodules, calcite
