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IJMS Vol.34(3) [September 2005] >


Title: Pre-tsunami chemistry of sediments along the inner continental shelf off Ennore, Chennai, southeast coast of India
Authors: Thangadurai, N.
Srinivasalu, S.
Jonathan, M.P.
Rao, N.Rajeshwara
Kumar, R.Santhosh
Keywords: East coast of India
Surface sediment
Geochemistry
Minor metals
Issue Date: Sep-2005
Publisher: CSIR
Abstract: The inner continental shelf off Ennore hosts sediment carrying several minor metals of both natural and anthropogenic origin from the Korttalaiyar River through Ennore Creek. The sediments are mostly sandy silt and silty sand. The CaCO₃ and organic matter contents in the sediment are very low (~ 2.1% and ~ 0.9%, respectively). The correlation matrix exhibits poor correlation between these components and minor metals indicating an insignificant role of CaCO3 and organic matter in enriching minor metals. The minor metals exhibit strong mutual positive association (R > 0.6 at 95% confidence level). The geographical distribution of the elements shows higher concentration in northern part of the study area when compared with their concentrations in the southern part. In view of the recent M9-tsunami effect on the coastal sediment of this region, the present investigation provides immediate pre-tsunami minor metal distribution levels. This in turn will provide a reference for studying sediment re-distribution due to high energy tsunami tidal waves in the study region.
Page(s): 274-278
ISSN: 0379-5136
Source: IJMS Vol.34(3) [September 2005]

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