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Journal: JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY | Year:1380 | Volume:- | Issue:10 | Start Page:11 | End Page:23

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Title

GEOCHEMISTRY OF TWO SEDIMENT CORES FROM THE WEST COAST OF INDIA

Pages

 Start Page 11 | End Page 23

Abstract

 The SEDIMENT COREs have high Al and organic meter contents due to the high sedimentation rate and their proximity to river mouths. Down-core variations of elements indicate a decrease/decreasing importance of the detrital component during probably the past few centuries. While abundance of Calcareous shells in some zones has lead to the dilution of most of metals, it appears that Pb and Mn are associated with this phase. Copper, Zn and Fe are associated with organic matter and detrital particles, whereas Ni and Co are predominantly associated with the insoluble fraction. Oxides/ hydroxides of Fe and Mn are absent because of the reducing conditions and the high terrigenous influx. Geochemically, Mn and Fe are present in different phases of sediments -predominantly in the insoluble fraction and organic matter respectively. The Fe content of one of the cores correlates with the magnetic susceptibility value.

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