DRS at CSIR-National Institute of Oceanography: Recent submissions
Now showing items 5081-5100 of 9513
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Evidence for recent hydrothermal activity in the Central Indian Basin
(Pergamon, 1997)This study documents the first actual prof of recent intraplate volcanic-hydrothermal activity in the Central Indian Basin (CIB). Twenty-six surface sediments and a spade core (37 cm long) from the CIB were examined for ... -
Dune associated calcretes, Rhizoliths and Paleosols from the western continental shelf of India
(Geological Society of India, 1997)The calcareous deposits on the western continental shelf of India, off Bhatkal (water depths 50 to 58 m) occur as crusts, sheets, cylinders and reddish brown mudstones. The outer layers of the crusts are micrite-dominated ... -
Magnetic expression of some major lineaments and cretaceous quiet zone in the Bay of Bengal
(Springer, 1997)Magnetic data over the eastern continental margin of India and adjacent Bengal fan demarcate two major lineaments. A high amplitude N - S trending lineation of the Cauvery offshore Basin corresponds to the offshore fragment ... -
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 ... -
Structure and origin of the 85 degrees E ridge
(American Geophysical Union, 1997)The submerged 85 degrees E Ridge in the Bay of Bengal trends approximately N-S between 19 degrees N and 6 degrees N latitudes. Off the southeast coast of Sri Lanka it takes an arcuate shape and seems to terminate with the ... -
Palaeoceanographic conditions during the formation of ferromanganese crust from the Afanasiy Nikitin seamount, north central Indian Ocean: geochemical evidence
(Elsevier, 1997)A ferromanganese crust dredged from the summit of the Afanasiy-Nikitin seamount in the composed of fresh-water phreatic calcite cement, Terebratulinae casts, rounded and ferruginised basalt clasts and weathered coralline ... -
Chlorine isotopic geochemistry of salt lakes in the Qaidam Basin, China
(Elsevier, 1997)The isotopic compositions of chlorine in salt lake brine coexisting with halite, oil-field water and river water from the Qaidam Basin (Qinghai, China) have been examined using high-precision measurement of chlorine isotopes ... -
Seasonal variation in the flux of planktic foraminifera: Sediment trap results from the Bay of Bengal, Northern Indian Ocean
(Cushman Foundation for Foraminiferal Research, 1997) -
Ilmenite placer deposits in the bays of Jaigad, Ambwah and Varvada, Maharashtra, India
(Geological Survey and Mines Bureau, Dehiwala, Sri Lanka, 1997)Growing demand for ilmenite owing to very limited resources of rutile and technological advancements in the industrial utilisation of ilmenite in place of rutile have excited interest in large-scale exploration for ilmenite ... -
Monsoon signatures in recent corals from the Laccadive Islands
(Indian Association of Sedimentologists, Aligarh, 1997)X-radiographs of the coral (Porites sp.) collected from several atolls of Lakshadweep show alternate bands of low and high density, formed in non-monsoon period and monsoon period, respectively. The results reveal annual ... -
Isotopic compositions of boron in sediments and their implications
(Current Science Association, Bangalore, 1997)The abundance and isotopic compositions of boron in sediments from the salt lakes of Qaidam Basin, China have been determined by thermal ionization mass spectrometry of cesium borate. The results show large variations in ... -
Marine magnetic anomalies as a link between the granulite belts of east coast of India and enderby land of Antarctica
(Geological Society of India, 1997)Magnetic data of the eastern continental margin of India (ECMI) helped in demarcating the offshore extension of the granulite belts of east coast of India and their possible link to those of the East Aantarctica. Short ... -
Climate induced changes in beach morphology and sediment dynamics, Machilipatnam
(Cent. for Earth Sci. Stud., Cochin (India), 1997)The wave climate, littoral current patterns, monthly and seasonal longshore drift rates, beach profile changes, and sediment budget of the beach sediments were determined along Machilipatnam, Andhra Pradesh (India) for the ... -
Geophysical investigations over a segment of the Central Indian Ridge, Indian Ocean
(Springer, 1997)Swath bathymetric, gravity, and magnetic studies were carried out over a 55 km long segment of the Central Indian Ridge. The ridge is characterized by 12 to 15 km wide rift valley bounded by steep walls and prominent ... -
Sediment transport near the Peninsular tip of India
(Cent. for Earth Sci. Stud., Cochin (India), 1997)Studies were undertaken at Kolachel on the western side of the Peninsular tip from April 1995 to April 1996, for a period of one year. Monthly measurements were made on littoral environment observations (LEO) and beach ... -
Initial results of India's environmental impact assessment of nodule mining
(Metal Mining Agency of Japan, 1997)The Indian Deepsea Experiment (INDEX) was intiated in 1995, with the objective of predicting the environmental impact of nodule mining, in the Central Indian Basin. More than 20 scientists and technical staff of the National ... -
Some geodynamic complexities related to the evolution of Bengal Fan and the neotectonic activity of the south Indian shield
(Current Science Association, Bangalore, 1997)After three decades of the International Indian Ocean Expedition (IIOE) and in spite of extensive geophysical data collected during the last one decade, the geodynamics of the Bengal Fan and the Peninsular shield at the ... -
Evidences of monsoon variability from marine sediments: A comparison with archaeological records
(NIO, Dona Paula, Goa, India, 1997) -
Studies on sediment transport along Kerala Coast, south west coast of India
(NISCAIR, CSIR, 1997)Longshore sediment transport characteristics of the Kerala Coast have been examined to delineate various physical processes affecting the different coastal environments. Monthly averages of the daily LEO (Littoral Environmental ... -
Geochemical constraints on the hydrothermal origin of ferromanganese encrustations from the Rodriguez Triple Junction, Indian Ocean
(Geological Society, London, UK, 1997)

