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Investigation of pretertiary and tertiary surface sediments from Serbia: Organic geochemical interpretation

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Author(s): Jovančićević Branimir S. | Šainović Aleksandar M. | Cvetković Olga G. | Filipović Ivan T. | Ašanin Petar M. | Vitorović Dragomir K.

Journal: Hemijska Industrija
ISSN 0367-598X

Volume: 56;
Issue: 1;
Start page: 25;
Date: 2002;
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Keywords: sediments | organic matter | maturity | pretertiary | tertiary

ABSTRACT
Samples of surface sediments originating from different localities in Serbia which contained more than 0.5 % organic matter were investigated in this paper. According to age, these samples were classified into two groups sediments of pretertiary age and sediments of tertiary age. Bulk and specific organic geochemical parameters were determined for their methylene chloride-methanol extracts, aimed at controling the relationship between the age of the sediment and the maturity of its organic substance. In this sense a general direct proportionality was observed. However, a better linear dependence of the bulk parameters was observed in the case of younger, tertiary sediments. That is to say, with samples of pretertiary age the organic matter maturity was approaching a definite limiting value contributing to an inferior linear dependence of their bulk maturation parameters. Nevertheless, the dependence was found to be preserved with specific maturation parameters (e.g., CPI; Fit/n-C18), the changes of which are generally more intensive at higher maturity degrees.
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