SAND GRAIN MINERALOGY OF PATTUKKOTTAI SERIES IN LATERITIC SOIL TRACT

K.MAYALAGU and P.PARAMASIVAM

doi:https://doi.org/10.29321/MAJ.10.A01699

Madras Agricultural Journal

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SAND GRAIN MINERALOGY OF PATTUKKOTTAI SERIES IN LATERITIC SOIL TRACT

Author: K.MAYALAGU and P.PARAMASIVAM,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 80, Issue: oct-oct,

DOI:https://doi.org/10.29321/MAJ.10.A01699

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Abstract

Four profiles of Pattukkottai series of lateritic soil tract, Sivagangai taluk were studied for the various sand grain minerals. The Pattukkottai series is a red soil formed in-situ from plinthite mixed with weathered gneisses having a thick argillic horizon, extending over 150 cm depth of solum. It contains less of heavy minerals and more of light minerals, indicating the oldness of soil. The coarse sand fraction contained more light minerals than fine sand. Among the minerals, quartz was the most predominant in both coarse and fine sand fractions under this lateritic soil tract.

Keywords: Lateritic Soil, Mineralogical studies

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