Browsing Scholarly literature by Author "Rao, V.P."
Now showing items 1-20 of 96
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A comparative study of Pleistocene phosphorites from the continental slope off western India
Rao, V.P.; Naqvi, S.W.A.; DileepKumar, M.; Cardinal, D.; Michard, A.; Borole, D.V.; Jacobs, E.; Natarajan, R. (Blackwell, 2000)Two types of phosphorite recovered from the continental slope off western India are described. The first type, phosphorite 1, comprises a hard, grey nodule composed of carbonate fluorapatite (CFA) and calcite as major ... -
A potential phosphorite deposit on the continental margin off Chennai
Rao, V.P.; Rao, K.M.; Vora, K.H.; Almeida, F.; Subramaniam, M.M.; Souza, C.G.A. (Current Science Association, 1998)The geochemistry and mineralogy of the potential phospharite deposits recovered from the continental margin off Chennai, Tamil Nadu (India) and their comparison with other offshore phosphorites is given. The phosphorites ... -
A potential phosphorite deposit on the continental margin off Chennai (Current Science 74(7); 1998; pp574-577). Reply to: Phosphorite occurrence off Chennai by Vaz, G.G.
Rao, V.P.; Rao, K.M.; Vora, K.H.; Almeida, F.; Subramaniam, M.M.; Godfrey, C.; Souza, A. (Current Science Association, 1998) -
A re-evaluation of palaeoclimatic conditions during the Pleistocene and Holocene from the western continental shelf of India - Evidences from the petrology of the limestones
Rao, V.P.; Nair, R.R. (Oxford and IBH, New Delhi, 1992)The western shelf of India is characterisEd. by the presence of Recent clayey sediments on the inner shelf and relict carbonate sediments and a variety of limestones on the outer shelf. The limestones of the outer continental ... -
A review on the nomenclature of Angadimogar and Kumbdaje plutons, Kasaragod district, Kerala
AnilKumar, A.; Gopinathan, V.; Gopinath, K.S.; Rao, V.P. (Geological Society of India, 2005)Pink and grey granites occur as minor, more or less circular bodies as Angadimogar and Kumbdaje areas of Kasaragod district, covering about 10 km sup(2) These granites are emplaced within the charnockites and gneisses ... -
Bathymetry and sediments on the carbonate platform off western India: Significance of Halimeda bioherms in carbonate sedimentation
Rao, V.P.; Mahale, V.; Chakraborty, B. (Springer India, 2018)Bathymetry across the carbonate platform off western India indicated small-size pinnacles and their lateral coalescence into 2 -6-m high mounds landward, and linear elongated carbonate ridges and troughs, mounds and banks ... -
Benthic fluxes in a tropical estuary and their role in the ecosystem
Pratihary, A.K.; Naqvi, S.W.A.; Naik, H.; Thorat, B.R.; Shirodkar, G.; Manjunatha, B.R.; Rao, V.P. (Elsevier, 2009)In-situ measurements of benthic fluxes of oxygen and nutrients were made in the subtidal region of the Mandovi estuary during premonsoon and monsoon seasons to understand the role of sediment-water exchange processes in ... -
Carbonate mineralogy and faunal relationship in tropical shallow water marine sediments: Cape Comorin, India
Hashimi, N.H.; Nair, R.R.; Kidwai, R.M.; Rao, V.P. (Elsevier, 1982)The carbonate mineralogy of Recent sediments from the western and eastern continental shelves around Cape Comorin off the southern tip of India was determined by X-ray diffraction analyses. The results show that in the ... -
Changes in depositional environment for the past 35 years in the Thane Creek, central west coast of India: Inferences from REEs, metals and magnetic properties
Fernandes, L.L.; Kessarkar, P.M.; Parthiban, G.; Rao, V.P. (Springer, 2017)The role of diagenetic processes in influencing the behaviour of metals (Fe, Mn, Cu, Ni, Zn), rare earth elements (REEs) and environmental magnetic parameters in two sediment cores from a polluted creek environment (the ... -
Changing sedimentary environment during the late Quaternary: Sedimentological and isotopic evidence from the distal Bengal Fan
Kessarkar, P.M.; Rao, V.P.; Ahmad, S.M.; Patil, S.K.; AnilKumar, A.; AnilBabu, G.; Chakraborty, S.; SounderRajan, R. (Elsevier, 2005)The sediments recovered from two gravity cores of the lower and distal Bengal Fan were investigated for sedimentological properties and Sr -Nd isotopes.Each core exhibits two distinct units, the lower unit 2 and upper unit ... -
Changing sedimentary environments during Pleistocene-Holocene in a core from the eastern continental margin of India
Rao, V.P.; Rao, Ch.M.; Mascarenhas, A.; Rao, K.M.; Reddy, N.P.C.; Das, H.C. (Geological Society of India, 1992)Sedimentological and geochemical investigations of the sediments in a core from the eastern continental margin of India, at a water depth of 1200 m, revealed two distinct types. The Late Pleistocene sediments are greyish-black ... -
Clay mineral distribution in the continental shelf and slope off Saurashtra, West coast of India
Rao, V.P. (NISCAIR, New Delhi, 1991)Clay mineral distribution in the sediments of the west coast of India indicates that the illite and chlorite-rich sediments, derived from the Indus, occupy the continental shelf of the northern part of the Gulf of Kutch. ... -
Clay mineral distribution in the continental shelf sediments from Krishna to Ganges river mouth, east coast of India
Rao, V.P. (NISCAIR, New Delhi, 1991)Ninety six sediment samples (less than 2 mu m fractions) of the eastern continental shelf of India between Ganges in the north and Krishna in the south have been studiEd. by X-ray diffraction. On the basis of nature and ... -
Clay mineral distribution in the shelf sediments off the northern part of the east coast of india
Rao, V.P.; Reddy, N.P.C.; Rao, Ch.M. (Elsevier, 1988)Forty-eight sediment samples from the continental shelf between Visakhapatnam and the Ganges were analysed by X-ray diffraction for the composition and distribution of clay minerals. Estuarine samples of the Hooghly are ... -
Clay mineral distribution on the Kerala continental shelf and slope
Rao, V.P.; Nair, R.R.; Hashimi, N.H. (Geological Society of India, 1983)Seventy-five sediment samples collected from the Kerala continental shelf and slope during the 17th and 71st Cruises of @iRV gaveshani@@ were analysed by X-ray diffraction for clay mineral cntent. The distribution of total ... -
Clay minerals and Sr-Nd isotopes of the sediments along the western margin of India and their implication for sediment provenance
Kessarkar, P.M.; Rao, V.P.; Ahmad, S.M.; Babu, G.A. (Elsevier, 2003)Mineralogy and Sr-Nd isotopic composition of the less than 2-m fraction of the Holocene and late Pleistocene sediments from 12 gravity cores collected along the western margin of India were used to delineate the provenance ... -
Clay minerals as palaeomonsoon proxies: Evaluation and relevance to the late Quaternary records from SE Arabian Sea
Thamban, M.; Rao, V.P. (NCAOR, Goa, 2005)Palaeoclimatic studies are largely dependent on the quality of records and a prudent use of environmental proxy indicators. In this study, the factors affecting the detrital clay minerals in marine environment and their ... -
Clay minerals in the sediments around the Andaman Islands
Rao, V.P. (CSIR-NISCAIR, 1983)Clay minerals in the eastern side of Andaman Islands consist of montmorillonite, kaolinite, illite and Fe-rich chlorites while on western side they consist of illite and Fe-poor chlorite with minor kaolinite and montmorillonite. ...