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dc.contributor.authorSebastian, T.
dc.contributor.authorNath, B.N.
dc.contributor.authorNaik, Sangeeta
dc.contributor.authorBorole, D.V.
dc.contributor.authorPierre, S.
dc.contributor.authorYazing, A.K.
dc.date.accessioned2017-03-01T09:46:40Z
dc.date.available2017-03-01T09:46:40Z
dc.date.issued2017
dc.identifier.citationMarine Pollution Bulletin, vol.114(2); 2017; 805-815
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/5089
dc.description.abstractEnvironmental magnetic and geochemical analyses combined with 210Pb dating were carried out on a sediment core off Goa from Arabian Sea to reconstruct the sedimentation history of last three and a half centuries and to investigate the impact of onshore iron ore mining on the offshore sedimentation. A drastic increase in sedimentation rate and mineral magnetic concentration parameters divides the core into two units (1 & 2) at a depth of 41 cm (1982 CE). The high magnetic susceptibility values in Unit 1 sediments are coeval with increased iron ore production on land and illustrate the role of terrestrial mining on the increased offshore sedimentation. The early diagenetic signals were observed in Unit 2 of the core with low concentration parameters, coarse magnetic grain size and magnetically hard mineralogy. The geochemical data of the core also record the Little Ice Age (LIA) climatic events of Dalton and Maunder solar minima.
dc.language.isoen
dc.publisherElsevier
dc.rightsAn edited version of this paper was published by Elsevier. Copyright [2016] Elsevier
dc.subjectGeology and geophysics
dc.subjectGeology and geophysics
dc.subjectGeology and geophysics
dc.subjectGeology and geophysics
dc.titleOffshore sediments record the history of onshore iron ore mining in Goa State, India
dc.typeJournal Article


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