Browsing by Author "Kalangutkar, N.G."
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Hydrothermal signature in ferromanganese oxide coatings on pumice from the Central Indian Ocean Basin
Kalangutkar, N.G.; Iyer, S.D.; Mascarenhas-Pereira, M.B.L.; Nath, B.N. (Springer, 2015)Mineralogical and elemental analyses of 20 ferromanganese (FeMn)-coated pumice samples from the Central Indian Ocean Basin (CIOB) indicate that todorokite is the major mineral phase, whereas vernadite occurs only rarely. ... -
Physical properties, morphology and petrological characteristics of pumices from the Central Indian Ocean Basin
Kalangutkar, N.G.; Iyer, S.D.; Ilangovan, D. (Geological Society of China, 2011)About 400 pumice clasts collected from the Central Indian Ocean Basin (CIOB) were studied for their morphology and classified based on their shape and size. A majority of the samples range between less than 1 cm and 36 cm ... -
Potential diagenetic and detrital sources for calcareous sediments from the Carlsberg Ridge, Indian Ocean
Valsangkar, A.B.; Borole, D.V.; Shejwalkar, A.S.; Kalangutkar, N.G.; Fernandes, N.O.; Dias, C.C. (Current Science Association, 2009)Six sediment cores from the Carlsberg Ridge (CR) were studied for elemental concentration, magnetic susceptibility (chi), grain size and clay mineral distribution, and sedimentation rate to decipher possible detrital and ... -
Seamounts - characteristics, formation, mineral deposits and biodiversity
Iyer, S.D.; Mehta, C.M.; Das, P.; Kalangutkar, N.G. (Biblioteca de Geologia (UB-CSIC), 2012)Seamounts represent crust-mantle activities and are areas of petrological deviations, biodiversity, seismicity and hydrothermal events. An estimated approx. 50 million tons/year of basalts are required to produce seamounts ... -
Seamounts - windows of opportunities and the Indian scenario
Iyer, S.D.; Das, P.; Kalangutkar, N.G.; Mehta, C.M. (Current Science Association, 2012)Seamounts are manifestations of crustal tectonics and volcanism, and are also sites of biodiversity and hydrothermal events. Although the population of seamounts is estimated to be in thousands, a large number of these ... -
Submarine silicic volcanism: Processes and products
Kalangutkar, N.G.; Iyer, S.D. (Indian Society for Earth, Planetary and Environmental Sciences (ISEPES), Odisha, 2012)The occurrence of submarine silicic volcanics is rare at the mid-oceanic ridges, abyssal depths, seamounts and fracture zones. Hydrothermal processes are active in submarine silicic environments and are associated with ...