Browsing by Author "KameshRaju, K.A."
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Advances in marine geophysical studies of the Indian Ocean: Contributions from India (2010-2015)
Krishna, K.S.; KameshRaju, K.A.; Ramprasad, T.; Chaubey, A.K.; Dewangan, P.; Yatheesh, V. (Indian National Science Academy, 2016)Indian scientists carrying marine geophysical research at different Earth Science institutions have made significant advances during the last six years (2012-2015) for understanding evolution of continental margins of India ... -
An integrated geophysical study east of the southern Chagos Laccadive Ridge Complex, Central Indian Ocean Basin: Implications for the Rodriguez Triple Junction dynamics in the Late Cretaceous
Desa, M.A.; Ramprasad, T.; KameshRaju, K.A. (2019)The Central Indian Ocean Basin, east of the southern Chagos Laccadive Ridge complex has evolved due to seafloor spreading in the N-S direction since the Late Cretaceous. The trace of the Rodriguez Triple Junction (RTJ)has ... -
Anomalous phase association of REE in ferromanganese crusts from Indian mid-oceanic ridges: Evidence for large scale dispersion of hydrothermal iron
SuryaPrakash, L.; Ray, D.; Nath, B.N.; Satyanarayanan, M.; KameshRaju, K.A.; Kurian, J.P.; DileepKumar, M.; Rao, A.S. (Elsevier B.V., 2020)Ferromanganese crusts collected at selected locations along the ~7000 km long stretch of Carlsberg, Central Indian and Southwest Indian ridges are studied for bulk geochemical composition and distribution of rare earths ... -
Back-arc extension in the Andaman Sea: Tectonic and magmatic processes imaged by high-precision teleseismic double-difference earthquake relocation
Diehl, T.; Waldhauser, F.; Cochran, J. R.; KameshRaju, K.A.; Seeber, L.; Schaff, D.; Engdahl, E.R. (American Geophysical Union, 2013)The geometry, kinematics, and mode of back-arc extension along the Andaman Sea plate boundary are refined using a new set of significantly improved hypocenters, global centroid moment tensor (CMT) solutions, and high-resolution ... -
Crustal accretion at a sedimented spreading center in the Andaman Sea
Jourdain, A.; Singh, S.C.; Escartin, J.; Klinger, Y.; KameshRaju, K.A.; McArdle, J. (Geological Society of America, 2016)The magmatic, tectonic, and hydrothermal processes forming the oceanic crust along mid-ocean spreading centers are strongly modified at sedimented spreading centers but poorly understood owing to the lack of good crustal ... -
Crustal structure beneath the Alcock Seamount in the Andaman Sea
Singha, Pabitra; Dewangan, P.; Ghosal, D.; KameshRaju, K.A.; Aswini, K.K.; Yatheesh, V.; Mukhopadhyay, R.; Mandal, Suman (Elsevier, 2023)Alcock and Sewell seamounts are important geomorphic features in the Andaman Sea due to their association with the tectonic history of the Sunda subduction zone. Despite the availability of global geophysical data, the ... -
Detailed bathymetric surveys in the central Indian Basin
Kodagali, V.N.; KameshRaju, K.A.; Ramprasad, T.; George, P.; Jaisankar, S. (International Hydrographic Bureau, France, 1992)Over 420,000 line kilometers of echo-sounding data was collected in the Central Indian Basin. This data was digitized, merged with navigation data and a detailed bathymetric map of the Basin was prepared. The Basin can be ... -
Detailed Structure and Plate Reconstructions of the Central Indian Ocean Between 83.0 and 42.5 Ma (Chrons 34 and 20)
Yatheesh, V.; Dyment, J.; Bhattacharya, G.C.; Royer, J.Y.; KameshRaju, K.A.; Ramprasad, T.; Chaubey, A.K.; Patriat, P.; Srinivas, K.; Choi, Y. (2019)The Central Indian Ocean, namely the Central Indian, Crozet, and Madagascar basins, formed by rifting and subsequent drifting of India (now Capricorn), Antarctica, and Africa (now Somalia). We gathered a comprehensive set ... -
Distribution of REEs and yttrium among major geochemical phases of marine Fe–Mn-oxides: Comparative study between hydrogenous and hydrothermal deposits
SuryaPrakash, L.; Ray, D.; Paropkari, A.L.; Mudholkar, A.V.; Satyanarayanan, M.; Sreenivas, B.; Chandrasekharam, D.; Kota, D.; KameshRaju, K.A.; Kaisary, S.; Balaram, V.; Gurav, T. (Elsevier, 2012)Mineralogy and geochemistry of the ferromanganese oxides collected from two seamounts in the Andaman Sea have been investigated with special reference to the solid phase partitioning behavior of rare earth elements (REEs). ... -
Elevated turbidity and dissolved manganese in deep water column near 10�47�S Central Indian Ridge: studies on hydrothermal activities
Ray, D.; KameshRaju, K.A.; Rao, S.A.; SuryaPrakash, L.; Mudholkar, A.V.; Yatheesh, V.; Samudrala, K.; Kota, D. (Springer Science and Business Media Deutschland GmbH, 2020)The deep water in the ridge segment between 10°18'S and 10°57'S of northern Central Indian Ridge was surveyed with CTD and AUV for seafloor hydrothermal activities. During the survey, 25 CTD hydrocasts were made, and ... -
Evidence for hydrothermal activity in the Andaman Backarc Basin
Rao, P.S.; KameshRaju, K.A.; Ramprasad, T.; Nath, B.N.; Rao, B.R.; Rao, Ch.M.; Nair, R.R. (Current Science Association, Bangalore, India, 1996)Multibeam bathymetric, magnetic, gravity and seismic surveys revealed a complex morphotectonic fabric of the Andaman Backare Basin with a spreading ridge, several seamounts and faults. The ridge trending SW-NE direction ... -
Exploration of the Carlsberg Rodge
Mudholkar, A.; KameshRaju, K.A.; Kodagali, V.N.; Afzulpurkar, S.; Ambre, N.V. (International Cooperation of Ridge-Crest Studies, 2000) -
First quantitative exploration of benthic megafaunal assemblages on the mid-oceanic ridge system of the Carlsberg Ridge, Indian Ocean
Sautya, S.; Ingole, B.; Jones, D.O.B.; Ray, D.; KameshRaju, K.A. (Cambridge University Press, 2017)There are few quantitative studies on deep-sea biodiversity from the Indian Ocean, particularly on the mid-ocean ridges (MOR). We investigated the benthic megafaunal community structure of the Indian Ocean MOR at the ... -
Formation and evolution of the Chain-Kairali Escarpment and the Vishnu Fracture Zone in the Western Indian Ocean
Shuhail, M.; Yatheesh, V.; Bhattacharya, G.C.; Muller, R.D.; KameshRaju, K.A.; Mahender, K. (Elsevier, 2018)Published models for the plate tectonic evolution of the Western Indian Ocean suggest that the Southern Mascarene Basin opened by oceanic crustal accretion between the continental margins of southwestern India and southeastern ... -
Gas hydrates stability zone thickness map of Indian deep offshore areas - A GIS based approach
Rastogi, A.; Deka, B.; Bhattacharya, G.C.; Ramprasad, T.; KameshRaju, K.A.; Srinivas, K.; Murty, G.P.S.; Chaubey, A.K.; Ramana, M.V.; Subrahmanyam, V.; Sarma, K.V.L.N.S.; Desa, M.; Paropkari, A.L.; Menezes, A.A.A.; Murty, V.S.N.; Antony, M.K.; SubbaRaju, L.V.; Desa, E.; Veerayya, M. (Indian Oil Corporation, New Delhi, India, 1999)Natural gas hydrates, which have the potential of being an alternate energy resource, are known to occur worldwide in the sediments of the outer continental margins and in the polar regions in association with permafrost. ... -
Geochemical characteristics of basalts from Andaman subduction zone: Implications on magma genesis at intraoceanic back-arc spreading centres
Saha, A.; Mudholkar, A.V.; KameshRaju, K.A.; Doley, B.; Sensarma, S. (2019)This study reports new petrological and geochemical data for the ocean floor volcanic rocks dredged from the back?arc basin of the Andaman Sea and elucidates their geochemical characteristics and petrogenetic aspects to ... -
Geochemical characteristics of submarine rhyolitic pumice from Andaman subduction zone: Inferences on magmatism and tectonics of north?eastern Indian Ocean
Saha, A.; DeMello, N.G.; Sensarma, S.; Mudholkar, A.V.; KameshRaju, K.A.; Doley, B. (2019)This paper reports new geochemical data for submarine volcanic pumice sampled from two volcanoes (SM?1 and SV?1) which are part of the Andaman subduction system. SM?1 volcano is located closer to the Andaman back?arc ... -
Geological and geophysical exploration along Carlsberg Ridge
Mudholkar, A.V.; Kodagali, V.N.; KameshRaju, K.A.; Valsangkar, A.B.; Ranade, G.; Ambre, N.V. (International Cooperation of Ridge-Crest Studies, 1997) -
Geology of Bangladesh by K.U Reimann
KameshRaju, K.A. (Elsevier, 1994) -
Geometry of the Subducting Indian Plate and Local Seismicity in the Andaman Region from the Passive OBS Experiment
Singha, P.; Dewangan, P.; KameshRaju, K.A.; Aswini, K.K.; Reddy, R.T. (Seismological Society of America, California, USA, 2019)We deployed a temporary passive ocean-bottom seismometer (OBS) network from 25 December 2013 to 15 May 2014 to understand the local seismicity pattern in the Andaman region. A total of 559 local earthquakes are identified ...