Seetharamaiah, J.Swamy, A.S.R.2023-05-252023-05-251997Seetharamaiah, J., & Swamy, A. S. R. (1997). Distribution of organic matter and calcium carbonate in the shelf sediments off Penner River, east coast of India. Oceanographic Literature Review, 12(44), 1464.URL: https://www.infona.pl/resource/bwmeta1.element.elsevier-6f191ad2-61da-3a52-97fc-a437a1aa9bc8http://hdl.handle.net/20.500.12661/3986Abstract. Full text article available at https://www.infona.pl/resource/bwmeta1.element.elsevier-6f191ad2-61da-3a52-97fc-a437a1aa9bc8Organic matter and calcium carbonate in the shelf sediments off penner river are mainly controlled by the texture of the sediments. The outer shelf (30-50 m depth) sediments of the southern and northern parts have a higher content of organic matter (1.2 to 2.22%). The sharp differences in organic matter content (varies from 0.8-1.6%) and fine nature of the sediments at the river mouth reveals detrital contribution. A calcium carbonate rich zone (30-40%) associated with coarse sands occurs opposite to penner river mouth (20-50 m depth). The source for high concentration of calcium carbonate in the coarse sands (relict) are molluscan shells, shell fragments and foraminifera indicative of the in situ origin . It is inferred that the calcium carbonate supports that the coarse sands are stillstand deposits admixtured with present conditions.enOrganic matterCalcium carbonateShelf sedimentsPenner riverIndiaSandArticle