Browsing by Author "Parthiban, G."
Now showing items 1-20 of 55
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Modern sedimentation on the eastern continental shelf of India: Assessing the provenance and sediment dispersal pattern
Mascarenhas-Pereira, M.B.L.; Nath, B.N.; Neetu, S.; Rebelo, R.A.; Sebastian, T.; SarkarA.; Kazip, A.; Ajeesh, M.S.; Miriyala, P.; Patil, Jayesh; Kocherla, M.; Rao, B.R.; Parthiban, G. (Elsevier, 2023)Sediments deposited on the eastern continental shelf of India are studied for texture, mineralogy and their major, trace, and rare earth elemental composition in lithogenic fraction. The objective of this study was to ... -
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) ... -
Geochemical characterization and regional correlation of Youngest Toba Tuff (YTT, 75 ka) glass shards, Purna alluvial basin, Central India
Srivastava, A.K.; Singh, Ajab; Muhammad, R.F.B.H.; Pattan, J.N.; Sharma, Natwar; Parthiban, G.; Khare, Neloy (Springer, 2021)Geochemistry of glass shards belonging to Youngest Toba Tuff (YTT) ash from eight different localities of Purna alluvial basin, Central India have been carried out to interpret magmatic and postdepositional processes led ... -
Seasonal distribution of trace metals in suspended particulate and bottom sediments of four microtidal river estuaries, west coast of India
Fernandes, L.L.; Kessarkar, P.M.; Rao, V.P.; Suja, S.; Parthiban, G.; Kurian, S. (2019)The seasonal distribution of metals (V, Cr, Co, Cu, Ni, Zn, Pb, Mn, Fe, Al and Ti) in suspended and bottom sediments of four minor estuaries (Terekhol, Chapora, Sal and Talpona rivers) of Goa, India was investigated to ... -
Productivity controls on the redox variation in the southeastern Arabian Sea sediments during the past 18 kyr
Pattan, J.N.; Parthiban, G.; Amonkar, A. (2019)Redox-sensitive elements (uranium, molybdenum and cadmium) and productivity proxies (total organic carbon, calcium carbonate and phosphorous) were analysed to assess the importance of productivity on redox variation for ... -
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 ... -
Trace elements in ferromanganese nodules from the central indian ocean basin
Pattan, J.N.; Parthiban, G.; Amonkar, A.; Shaikh, S.A.; Jaisankar, S. (Taylor & Francis, 2017)Thirty-three bulk ferromanganese nodules from the sediment-water interface of siliceous sediment domain from the Central Indian Ocean Basin were analyzed for 50 elements including 6 new (Be, As, Se, Sn, Sb, and Bi) using ... -
Intense reducing conditions during the last deglaciation and Heinrich events (H1, H2, H3) in sediments from the oxygen minimum zone off Goa, eastern Arabian Sea
Pattan, J.N.; Parthiban, G.; Garg, A.; Moraes, N.R.C. (Elsevier, 2017)Two sediment cores, ABP-32/GC-01R and ABP-32/GC-03 were collected at a water depth of 642 m and 1086 m off Goa from the present day Oxygen Minimum Zone (OMZ) of eastern Arabian Sea (EAS) cover time span of last 18 ka and ... -
Chemical composition and provenance of Chinese porcelain shards recovered from Old Goa, west coast of India
Tripati, S.; Parthiban, G.; Pattan, J.N.; Menezes, A.A.A. (Elsevier, 2017)During recent archaeological explorations at Old Goa, west coast of India, twenty three Chinese porcelain shards of the Ming (Middle to late 16th century), Qing (17th century) and late Qing period (late 17th century) have ... -
Morphology and chemical composition of ash layer of about 8 Ma old from ODP-758 site, Bay of Bengal
Jumaila, C.P.U.; Pattan, J.N.; Ahmad, S.M.; Parthiban, G.; Khedekar, V.D.; Padmakumari, V.M.; Milindraj, P. (CSIR, India, 2017)Glass shards from an ash layer of about 8 Ma old extracted from a core drilled at an ODP-758 site in the Bay of Bengal (BOB) were studied for morphology and chemical composition in order to trace their possible source. ... -
A note on chemical composition and origin of ferromanganese oxide coated and uncoated pumice samples from central Indian Ocean basin
Pattan, J.N.; Parthiban, G.; Moraes, C.; Rajalakshmi, R.; Lekshmi, S.; Athira, S.; JaiSankar, S. (Geological Society of India, 2016)Pumice are explosive volcanic product, occur as uncoated or coated with ferromanganese (Fe-Mn) oxide and resides in association with ferromanganese nodules on the seabed in Central Indian Ocean Basin (CIOB). The older Fe-Mn ... -
Multiple ash layers in late Quaternary sediments from the Central Indian Basin
Mascarenhas-Pereira, M.B.L.; Nath, B.N.; Iyer, S.D.; Borole, D.V.; Parthiban, G.; Jijin, R.; Khedekar, V.D. (Elsevier, 2016)We have investigated three sediment cores collected from water depths > 5000 m along the transect 76°30`E in close proximity to a fracture zone in the Central Indian Basin (CIB). The cores yielded five volcanic horizons ... -
A note on an occurrence of pseudo-pumice along the beaches of Goa and Karnataka
Jumaila, C.P.U.; Pattan, J.N.; Mascarenhas, A.; Parthiban, G.; Moraes, C.; Khedekar, V.D. (CSIR-NISCAIR, 2015)Clasts showing typical physical features of pumice were found scattered along the beaches of Goa and Karnataka Their chemical composition suggests a large variation in SiO<sub>2</sub> content (69% to 93%), with an unusual ... -
Individual glass shard trace element analyses confirm that all known Toba tephra reported from India is from the c. 75-ka Youngest Toba eruption
Pearce, N.J.G.; Westgate, J.A.; Gatti, E.; Pattan, J.N.; Parthiban, G.; Achyuthan, H. (John Wiley, 2014)Uncertainty over the identity and age of Toba tephras across peninsular India persists, with radiometric age dates contradicting earlier compositional data, which have been used to identify this important stratigraphic ... -
Palynological record of tropical rain forest vegetation and sea level fluctuations since 140 ka from sediment core, south-eastern Arabian sea.
Farooqui, A.; Pattan, J.N.; Parthiban, G.; Srivastava, J.; Ranjana (Elsevier, 2014)Palyno-chronological study of a 552 cm deep sediment core from the south-eastern Arabian Sea covers a time span of ~ 140 ka. The age estimate is based on oxygen isotopic data of planktic foraminifera. Six zones were ... -
Ultrafiltration technique in conjunction with competing ligand exchange method for Ni–humics speciation in aquatic environment
Chakraborty, P.; Boissel, M.; Reuillon, A.; Babu, P.V.R.; Parthiban, G. (Elsevier, 2013)The combination of ultrafiltration technique with competing ligand exchange method provides a better understanding of interactions between Ni and different molecular weight fractions of humic acid (HA) at varying pH in ... -
Coupling between suboxic condition in sediments of the western Bay of Bengal and southwest monsoon intensification: A geochemical study
Pattan, J.N.; Mir, I.A.; Parthiban, G.; Karapurkar, S.G.; Matta, V.M.; Naidu, P.D.; Naqvi, S.W.A. (Elsevier, 2013)Reconstruction of paleo-redox conditions in a radiocarbon (14C) dated sediment core (SK-218/1), covering the past 45 ka (thousand calendar years), collected from the western Bay of Bengal (Lat: 14 degrees 02′N; Long: 82 ... -
REE in suspended particulate matter and sediment of the Zuari estuary and adjacent shelf, western India: Influence of mining and estuarine turbidity
Shynu, R.; Rao, V.P.; Parthiban, G.; Balakrishnan, S.; Narvekar, T.; Kessarkar, P.M. (Elsevier, 2013)Concentrations of Al, Fe, Mn and rare earth elements (REE) were measured in 122 samples of suspended particulate matter (SPM) and 70 surficial sediments from the Zuari estuary and the adjacent shelf to understand their ... -
The origin of ferro-manganese oxide coated pumice from the Central Indian Ocean Basin
Pattan, J.N.; Pearce, N.J.G.; Parthiban, G.; Smith, V.C.; Mudholkar, A.V.; Rao, N.R. (Elsevier, 2013)Pumice clasts, partially and fully coated with ferro-manganese oxide from the Central Indian Ocean Basin (CIOB) were analysed for major, trace and rare earth elements; and glass and mineral grain chemistry to assess their ... -
Fe speciation and Fe/Al ratio in the sediments of southeastern Arabian Sea as an indicator of climate change
Pattan, J.N.; Parthiban, G.; Gupta, S.M.; Mir, I.A. (Elsevier, 2012)Aluminium, titanium and iron are the major lithogeneous contributors to the marine sediment and their abundance varies strikingly with the intensity of monsoonal precipitation. Al and Ti concentrations in a sediment core ...