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dc.contributor.authorSarkar, C.
dc.contributor.authorIyer, S.D.
dc.contributor.authorHazra, S.
dc.date.accessioned2009-02-11T07:05:59Z
dc.date.available2009-02-11T07:05:59Z
dc.date.issued2008
dc.identifier.citationMarine Georesources and Geotechnology, vol.26(4); 259-289
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/2581
dc.description.abstractMore than 200 samples of manganese nodules from the Central Indian Ocean Basin (CIOB) were studied for their different parameters. The study included various aspects such as morphology, texture, mineralogy, and composition of the nodules. The nuclei of the nodules were also examined along with the oxide layers. We attempt to correlate the nucleus (their type and abundance) with the nodule parameters such as their external morphology, chemical composition, and suitable location of formation, amongst others. We found various nucleating materials and these include rock fragments (fresh and altered), clay, pumice and sharks’ teeth. In a majority of the cases, rock fragments are dominant in the core of the nodules and these conform to that of the seafloor basalts. The shape of the nuclei influences that of the nodules, especially during their initial period of growth. Irrespective of the kind of nuclei, todorokite is the main mineral of the nodules. The nodules of the CIOB were formed mostly due to hydrogenous accretion of ferromanganese oxides while diagenetic contribution of metals is less common.
dc.language.isoen
dc.publisherTaylor & Francis
dc.rightsCopyright [2008]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subjectCentral Indian Ocean basin
dc.subjectIndian Ocean
dc.subjecthydrogenous accretion
dc.subjectmanganese nodules
dc.subjecttodorokite
dc.titleInter-relationship between nuclei and gross characteristics of manganese nodules, Central Indian Ocean Basin
dc.typeJournal Article


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