Browsing by Subject "calcium carbonates"
Now showing items 1-10 of 10
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Fluctuation in glacial and interglacial sediment discharge of the River Indus as seen in the core from the Arabian Sea
(CSIR-NISCAIR, 1985)Sediment core from the upper continental slope off Saurashtra Coast has been analysed for CaCO sub(3) and coarse fraction contents in addition to planktonic foraminifera and clay mineralogy. Based on CaCO sub(3) and ... -
Geochemistry of zinc in the sediments of the western continental shelf and slope of India
(Indian Association for Limnology and Oceanography, 1985)The bulk geochemistry of zinc in the sediments of the western continental shelf and slope of India and also the partition geochemistry of the sediments of the shelf and slope regions between Ratnagiri and Mangalore have ... -
Influence of estuaries on shelf sediment texture
(Tirunelveli: JCSONLINE, 1986)Granulometric analyses of sediments on the western continental shelf of India demonstrate that the texture of inner continental shelf sediments (10 to 60 m water depth) appears to be determined by the size and number of ... -
Late Quaternary paleoceanographic features as deduced from calcium carbonate and faunal changes of planktonic foraminifers in core samples from northeastern Arabian Sea
(Marine Biological Association of India, 1997)Two pelagic core samples, ARB-52 and ARB-54 from 2240 m and 800 m depths respectively from the Arabian Sea off Bombay were analysed for determining climatic changes during the past 30,000 yr. based on the interpretation ... -
Lithological and mineralogical changes observed in a core from the western Bay of Bengal
(Allied, New Delhi (India), 1997)Lithological and mineralogical studies were carried out on sediments from a 650 cm long core from the north western Bay of Bengal at a depth of 2700 m. These studies demarcate a boundary at 380 cm designated as unit 1 from ... -
Nannoplankton from the Bombay-Saurashtra continental shelf of India: An appraisal using cluster analysis
(Indian Association for Limnology and Oceanography, 1984)Nannoplankton data from 28 stations in the northwestern continental shelf of India was subjected to Q-mode cluster analysis. Two biotopes A and B were identified. Although, Gephyrocapsa oceanica was by far, the most abundant ... -
Planktonic foraminifera from a quaternary deep sea core from the southern Arabian Sea
(Geological Society of India, 1989)An investigation on planktonic foraminifera and calcium carbonate content of a box core collected at a depth of 2556 m from the southern part of the Arabian sea indicates faunal changes depicting Quaternary climatic ... -
Precipitation of iron in windopane oyster shells by marine shell-boring cyanobacteria
(Taylor & Francis, 1989)Shells of windowpane oyster (Placuna placenta (L.)) in the intertidal zone of the Zuari Estuary, Goa, India were often found to be black in color. Microscopical observation of partially decalcified shells showed the presence ... -
Studies on structure and organization of calcium carbonate deposits in algae
(Current Science Association, Bangalore, India, 1995)The structure and organization of calcium carbonate deposits is studied in species of Halimeda, Udotea, Neomeris (Chlorophyta) and Padina (Phaeophyta). It was found that in Halimeda aragonite deposition takes place outside ... -
Studies on the shelf sediments off the Madras coast
(National Institute of Sciences of India, 1968)Sediment samples collected from the shelf and slope regions along two sections normal to the coast off Madras and Karaikal and from a few stations in between have been studied for their grain size, coarse fraction constituents ...