Impacts Of Monsoon Variability On The Major Element Concentration Of Sediment Core Off Cochin, South-Eastern Coast Of Arabian Sea

This paper reports use of 210Pb for determination of age of coastal oceanic sediments and determination of the paleo-redox and paleo-productivity proxy by measurement of the concentration of redox sensitive elements. This paper is a synthesis of the use of selected trace elements as proxies for reconstruction of paleo-productivity and paleo-redox conditions. Redox sensitive trace metals tend to be more soluble in water under water in oxidizing conditions while they precipitate under reducing conditions increasing their concentration in authigenic sediments for which these elements can be used as paleo-redox proxies. Significant increase in the amount of Calcium from 1975 to 1980 was observed as a result of high upwelling.