Browsing by Author "Swamy, A.S.R."
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Item Distribution of organic matter and calcium carbonate in the shelf sediments off Penner River, east coast of India(Elsevier, 1997) Seetharamaiah, J.; Swamy, A.S.R.Organic 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.