Browsing Scholarly literature by Author "Rao, V.P."
Now showing items 21-40 of 96
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Controls on organic carbon distribution in sediments from the eastern Arabian Sea margin
Thamban, M.; Rao, V.P.; Raju, S.V. (Springer, 1997)Sediment cores from the upper continental slope of the eastern Arabian Sea have high organic carbon (OC), CaCO sub(3), and sand content at the top. The values decrease with increasing depth in the Holocene and Upper ... -
Controls on organic matter distribution in oxygen minimum zone sediments from the continental slope off western India
Kurian, S.; Kessarkar, P.M.; Rao, V.P.; Reshma, K.; Sarkar, Amit; Pattan, J.N.; Naqvi, S.W.A. (Elsevier B.V., 2020)The causes of organic-rich sediments in contact with the perennial oxygen minimum zone (OMZ) on the continental slope off western India have been debated extensively, largely in relation to two main controlling factors: ... -
Controls on the distribution and fractionation of yttrium and rare earth elements in core sediments from the Mandovi estuary, western India
Prajith, A.; Rao, V.P.; Kessarkar, P.M. (Elsevier, 2015)Mineralogy, major elements (Fe, Mn and Al), rare earths and yttrium (REY) of bulk sediments were analyzed in four gravity cores recovered along the main channel of the Mandovi estuary, western India, to determine the sources ... -
Distribution and composition of verdine and glaucony facies from the sediments of the western continental margin of India
Thamban, M.; Rao, V.P. (Society for Sedimentary Geology, Tulsa, USA, 2000)Investigations on green grains from sediments of the western continental margin of India, between Ratnagiri and Cape Comorin, (water depth 37-330 m) indicate the presence of verdine and glaucony facies. Verdine facies ... -
Distribution and dispersal of clay minerals on the western continental shelf of India
Nair, R.R.; Hashimi, N.H.; Rao, V.P. (Elsevier, 1982)Sediment samples distributed over a distance of 1700 km from the inner continental shelf of western India were analysed for their clay-mineral content by X-ray diffraction. The clay minerals present in the sediments, in ... -
Distribution and fractionation of rare earth elements and Yttrium in suspended and bottom sediments of the Kali estuary, western India
Suja, S.; Fernandes, L.L.; Rao, V.P. (Springer, 2017)Concentrations of rare earth elements (REE) and yttrium (Y), and major metals (Al, Fe and Mn) were measured in suspended particulate matter (SPM) and bottom sediments of the Kali estuary, western India, for their distribution ... -
Distribution, provenance and early diagenesis of major and trace metals in sediment cores from the Mandovi estuary, western India
Prajith, A.; Rao, V.P.; Chakraborty, P. (Elsevier, 2016)Major elements and trace metals were analyzed in four sediment cores recovered along a transect in the Mandovi estuary for their distribution, provenance and early diagenesis. The sediments were clayey silts in cores from ... -
Dune associated calcretes, Rhizoliths and Paleosols from the western continental shelf of India
Rao, V.P.; Thamban, M. (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 ... -
Estuarine and marine geology (2011-2015)
Rao, V.P.; Chakraborty, P. (Proceedings of the Indian National Science Academy, 2016)The estuaries of the Mandovi and Zuari (Ma-Zu) Rivers and Godavari River have been investigated extensively for understanding the sedimentary and bio-geochemical processes during the last 5 years. Estuarine turbidity maximum ... -
Estuarine turbidity maximum in six tropical minor rivers, central west coast of India
Fernandes, L.L.; Rao, V.P.; Kessarkar, P.M.; Suja, S. (IWA Publishing, 2018)Understanding patterns of erosion and sedimentation and their driving mechanisms is important for formulating a variety of estuarine management issues (conservation, shoreline protection, navigation, dredging and embanking). ... -
Evidence for underwater current activity on the upper slope of the carbonate platform off western India using multibeam bathymetry
Chakraborty, B.; Rao, V.P.; Salkar, T.; Mahale, V.; Kurien, J. (Current Science Association & Indian Academy of Sciences, 2019)This note presents multi-beam bathymetry data from the carbonate platform on the outer continental shelf of the northwestern margin of India at water depths between 60 and 90 m. This study analyze effect of underwater ... -
Evidences of late quaternary neotectonic activity and sea-level changes along the western continental margin of India
Rao, V.P.; Veerayya, M.; Thamban, M.; Wagle, B.G. (Current Science Association, Bangalore, India, 1996)The offshore data on sea-level changes along the western margin of India have been reviewed and evidences of Late Quaternary neotectonic activity and subsidence are documented, based on the diagenetic textures of limestones ... -
Fluctuations in productivity and denitrification in the southeastern Arabian Sea during the Late Quaternary
Kessarkar, P.M.; Rao, V.P.; Naqvi, S.W.A.; Chivas, A.R.; Saino, T. (Current Science Association, 2010)Sedimentological and stable isotopic characteristics of sediments have been studied in a core from the southeastern Arabian Sea containing records of the past 70 ka. Palaeoproductivity proxies such as organic carbon (C ... -
Genesis of apatite in the phosphatized limestones of the western continental shelf of India
Rao, V.P.; Lamboy, M. (Elsevier, 1996) -
Geochemical evidence of terrigenous influence in deep-sea sediments upto 8°S in the Central Indian basin
Nath, B.N.; Rao, V.P.; Becker, K.P. (Elsevier, 1989)Thirty-two representative deep-sea sediment samples have been studied from three manganese nodule-bearing environments in the Central Indian Basin: diatomaceous-radiolarian ooze-clay, pelagic brown clay and calcareous ooze. ... -
Geochemistry of sediments in contact with oxygen minimum zone of the eastern Arabian Sea: Proxy for palaeo-studies
Kessarkar, P.M.; Fernandes, L.L.; Parthiban, G.; Kurian, S.; Shenoy, D.M.; Pattan, J.N.; Rao, V.P.; Naqvi, S.W.A.; Verma, Swati (Springer, 2022)The Arabian Sea encompasses oxygen minimum zone with denitrifying conditions. For the present study, sediments were collected across three transects off Goa transect (GT), Mangalore transect (MT) and Kochi transect (KT) ... -
Geochemistry of the suspended sediment in the estuaries of the Mandovi and Zuari rivers, central west coast of India
Kessarkar, P.M.; Shynu, R.; Rao, V.P.; Chong, F.; Narvekar, T.; Zhang, J. (Springer, 2013)The geochemistry of the suspended particulate matter (SPM) collected during the monsoon was determined to identify the sources of SPM and to understand the physicochemical processes in the Mandovi and Zuari river estuaries. ... -
Geomorphology and geology of the Bay of Bengal and the Andaman Sea
Rao, V.P.; Kessarkar, P.M. (Oxford and IBH, New Delhi, 2001)Marine geological studies in the Bay of Bengal were initiated by the Andhra University in early 1950's and have subsequently become widespread during the International Indian Ocean Expedition (IIOE - 1962-65). Geomorphological ... -
Geomorphology and surficial geology of the western continental shelf and slope of India: A review
Rao, V.P.; Wagle, B.G. (Current Science Association, Bangalore, 1997)Coastal geology and geomorphology of the area and nearshore currents played a significant role in the distribution of placer minerals off Kerala and Maharashtra. Transport and sedeimentation of fine-grained materials at ... -
Glacial to Holocene fluctuations in hydrography and productivity along the southwestern continental margin of India
Thamban, M.; Rao, V.P.; Schneider, R.R.; Grootes, P.M. (Elsevier, 2001)Oxygen isotope and sedimentological records of a sediment core from the southwestern continental margin of India are used to reconstruct the fluctuations in sea surface hydrography and productivity during the last deglaciation. ...