Abstract
Origin of clay minerals, their subsequent transformations in soils, and type of original parent material, can he investigated by soil mineralogy using X-Ray Diffraction Analysis (XRDA). Mineral composition of six rice soils (Miranpur, Pacca, Pindorian, Gujiana, Miani, and Bhalwal soil series) were investigated by XRDA. These soils are the major soil series occurring in recent and sub-recent river flood plains. Miranpur, Pindorian, and Miani soil series were developed from alluvium under sub-humid and semi-arid climate. The Pacca soil series ts developed tn shallow broad basin infills in sub-recent flood plains under semi-arid climate and Bhalwal soil series is developed in alluvium derived from the Himalayas and has an admixture of water transported loess. The dominant clay minerals in the studied soils were mica, smectite and kaolinite. Vermiculite and chlorite were less abundant. X-ray diffraction analysis showed a transformation of mica into smectite and vermiculite. In Pacca soil smectite was the only weathering product of mica. In Bhalwal soil series, mica was not weathered into any secondary mine
M.Sharif Zta, , Ashraf All, , Rahmatullah' . (1997) MINERALOGICAL CHARACTERIZATION AND DEGREE OF WEATHERING OF SOME BENCH MARK SOILS FROM RICE GROWING AREAS OF PUNJAB. , The Journal Soil & Environment , Volume 13, Issue (1-4).
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