Texture, mineralogy and elemental composition of sediments along the southeast coast of India

Bed sediments collected from the southeast coast of India were studied for texture, mineralogy and elemental composition. There was no systematic variation in the mean size. Sediments were moderately well sorted and slightly fine skewed. Kurtosis value of 1.2 showed intense sorting of the central pa...

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Bibliographic Details
Published in:Indian journal of marine sciences 1990-06, Vol.19 (2), p.128-132
Main Authors: MOHANACHANDRAN, G, SUBRAMANIAN, V
Format: Article
Language:English
Subjects:
Brackish
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Exact sciences and technology
Marine
Pollution, environment geology
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Summary:Bed sediments collected from the southeast coast of India were studied for texture, mineralogy and elemental composition. There was no systematic variation in the mean size. Sediments were moderately well sorted and slightly fine skewed. Kurtosis value of 1.2 showed intense sorting of the central part of the size distribution curve. Clay population was less, and sediments were essentially made up of detritals. Different grain size fractions showed variable heavy metal (Fe, Mn, Cr, Cu, Pb, Zn, Cd and Hg) concentrations. Coarse grained sediments contained lesser heavy metal concentration. River mouths were characterized by elevated heavy metal concentration and generally concentration levels decreased towards the coast from the land. Heavy metals in the study area have definite variation in the chemistry in relation to changes in the textural and mineralogical characteristics of the sediments.
ISSN:0379-5136
0975-1033