Institute's contributions: Recent submissions
Now showing items 4501-4520 of 9252
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Holocene sea level fluctuations on western Indian continental margin: An update
(Geological Society of India, 1995)A new Holocene curve is generated for the western Indian continental margin. While constructing this curve careful selection of the dates were made by giving due considerations to the genetic characteristics of the dated ... -
Rare earth element studies of surficial sediments from the southwestern Carlsberg Ridge, Indian Ocean
(Indian Academy of Sciences, Bangalore, India, 1995)The rare earth element (REE) contents of sixteen surficial calcareous sediments from the southwestern Carlsberg Ridge, Indian Ocean, have been determined. The total REE vary from 35 ppm to 126 ppm and are inversely related ... -
Foraminiferal evidences for 77-year cycles of droughts in India and its possible modulation by the gleissberg solar cycle
(Coastal Research Foundation, 1995)A 1.15 m long core collected from 20 m water depth off Karwar on the western continental shelf of India was studied to reconstruct the paleomonsoonal, precipitational history during the recent past with fine time resolution ... -
Verdine and glaucony facies from surficial sediments of the eastern continental margin of India
(Elsevier, 1995)The present paper reports the first mineralogical description of green grains (verdine and glaucony) from sediments of the eastern continental margin of India. Only 24 of the 82 sediment samples studied, at depths between ... -
Basement structure beneath the innershelf off Mahabalipuram to Palar River, east coast of India
(NISCAIR, CSIR, 1995)Magnetic data along three coastal parallel profiles over the innershelf (30-50 m water depth) off Mahabalipuram recorded short wavelength and high amplitude (peak to peak of the order of 200-700 nT) anomalies. Two linear ... -
Arc arrays: studies of high resolution techniques for multibeam bathymetric applications
(Elsevier, 1995)In this paper a theoretical study is initiated to observe the utility of directional spectral estimation techniques for `arc array' geometries. We examine the suitability of a 15 degrees arc transducer geometry for multibeam ... -
Living coccolithophorids from the Arabian Sea
(Department of Earth Sciences, University of Milan, 1995)Coccolithophorids collected from the euphotic zone in the Arabian Sea during the tail end of summer monsoon (Sept. 20 to Oct. 06, 1992) were studied. Nineteen species were recorded, most abundant among them were, Emiliania ... -
Influence of distribution characteristics and associated seabed features on exploitation of cobalt-rich manganese deposits
(Int. Soc. Offshore and Polar Eng., Japan, 1995)Method of exploitation, selection of mine site and desing of mining system of cobalt-rich manganese deposits on seamounts would be greatly influenced by the distribution characteristics as well as the associated seabed ... -
Nodules size: An important factor in nodule mining?
(Int. Soc. of Offshore and Polar-Eng.(ISOPE), Colorado, USA, 1995)A study of about 850 different sized nodules from 234 sites in the Central Indian Basin (CIB) showed a clear inverse relationship between size and grade of nodules. Among the different sized nodules, only the small (less ... -
Recent foraminifera along west coast of India: Restrospect, perspect and prospect
(Indian Academy of Geoscience, 1995)An immense quantum of work on foraminifera is being carried out in Indian waters by various research centers and universities. However, a thorough review of the foraminiferal studies from Indian waters is yet to be amde. ... -
Studies on normal incidence backscattering in nodule areas using the multibeam-hydrosweep system
(Cochin Univ. Sci. and Technol., Cochin, India, 1995)The acoustic response from areas of varying nodule abundance and number densities in the Central Indian Ocean has been studied by using the echo peak amplitudes of the normal incidence beam in the Multibeam Hydrosweep ... -
Offshore structural trends from magnetic data over Cauvery Basin, east coast of India
(Geological Society of India, 1995)Detailed analysis of magentic and bathymetric data over shelf and slope regions of Cauvery Basin, east coast of India, between Mahabalipuram and Vedaranyam demarcated three major offshore lineaments trending N-S, NE-SW and ... -
Worldwide databases in marine geology: A review
(Elsevier, 1995) -
Monsoon-induced temporal changes in beach morphology and associated sediment dynamics, central east coast of India
(Coastal Research Foundation, 1995) -
Seafloor characterisation using echo peak amplitudes of multibeam hydrosweep system - A preliminary study at Arabian Sea
(Cochin Univ. Sci. and Technol., Cochin, India, 1995)In this paper an interface to acquire 59-beams echo peak amplitudes of the Hydrosweep Multibeam system is established. The echo peak amplitude values collected at varying seabed provinces of Arabian sea are presented. The ... -
Phosphorites from the Oman Margin, ODP Leg 117
(Ifremer/ CNRS/ IRD/ Editions scientifiques et medicales Elsevier SAS. Tous droits reserves, 1995)The phosphorite levels present in the ODP cores of the Oman margin are of two types: (a) sediment levels dominated by phosphate grains with a few white to light-brown nodules; these are sandy and predominantly occur in ... -
Large philipsite crystal as ferromanganese nodule nucleus
(Springer, 1995)We report here the occurrence of, to date, the largest (21 x 10 x 8 mm) phillipsite crystal forming the nucleus of a diagenetically formed ferromanganese nodule from the Central Indian Ocean Basin (CIOB). Assuming an average ... -
Marine magnetic studies over a lost wellhead in Palk Bay, Cauvery Basin, India
(Geological Society of India, 1995)Close grid marine magnetic surveys in the vicinity of a drill well site PH 9-1 in Palk Bay revealed that the area is characterized by smooth magnetic field except for a local anomaly caused by a lost wellhead. The smooth ... -
Transparent heavy mineral distribution in the Bays of Jaigad, Ambwah, and Varvada, Ratnagiri District, Maharashtra
(Indian Association of Sedimentology, 1995) -
Distribution of major, trace and rare-earth elements in surface sediments of the Wharton Basin, Indian Ocean
(Elsevier, 1995)Bulk chemical analysed of eighteen surface sediments taken on an east-west transect (lat. 15 degrees 40'S) in the Wharton Basin, Indian Ocean, were analysed for major, trace and rare-earth elements (REE) by inductively ...