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dc.contributor.authorValsangkar, A.B.
dc.contributor.authorKarisiddaiah, S.M.
dc.date.accessioned2009-05-06T10:47:11Z
dc.date.available2009-05-06T10:47:11Z
dc.date.issued1993
dc.identifier.citationMarine Georesources and Geotechnology, Vol.11; 87-99p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/2858
dc.description.abstractStudies on different-sized polymetallic nodules from the Central Indian Ocean Basin reveal that chemical composition is largely related to the nodule diameter which show systematic decrease in Mn, Cu, and Ni content with increase in nodule size. S and I type nodule are more abundant than B, L, and V types. Nodules grouped according to their size have common morphological, mineralogical, and geochemical characteristics and all six groups have distinguishing properties. There is evidence which suggests that the smaller (M and I) nodules are diagenetic and the larger (S, B, L, and V) are hydrogenetic, exhibiting variations in todorokite abundance and in chemical composition. There is also substantial evidence that the nodules of high economic value (Cu + Ni + Co%) can be sorted out on the basis of simple morphological parameters
dc.language.isoen
dc.publisherTaylor and Francis
dc.rightsCopyright [1993]. 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.subjectferromanganese nodules
dc.subjectsize
dc.subjectmineralogy
dc.subjectgeochemistry
dc.subjectgrading
dc.titleEvidence for the formation of different-sized nodules by different accretionary processes
dc.typeJournal Article


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