Organodebris analysis of Chilka Lake, Orissa, India :an assessment of depositional environment

Abstract

This paper presents the result of organic matter analysis from Chilka Lake, Orrisa, India. A co-ordinated attempt has been made to classify and interpret total organic matter (TOM) in relation to the depositional environment. Organo debris analysis dated back to ca 3,200 years B.P. has provided clues that ponding environment gave rise to reducing (anerobic) conditions which probably accelerated microbial activity, transforming the palynodebris into first semi-amorphous/amorphous and then into fine organic matter. Various phases of mangrove vegetation development, the factors responsible for degrading mangals land denudation have also been discussed in the light of multivariate methods of data analysis.