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dc.contributor.authorNath, B.N.
dc.contributor.authorRao, V.P.
dc.contributor.authorBecker, K.P.
dc.date.accessioned1995-06-24T10:01:49Z
dc.date.accessioned2017-09-30T01:29:55Z
dc.date.available1995-06-24T10:01:49Z
dc.date.available2017-09-30T01:29:55Z
dc.date.issued1989
dc.identifier.citationMarine Geology, vol.87; 1989; 301-313
dc.identifier.issn0025-3227
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/7200
dc.description.abstractThirty-two representative deep-sea sediment samples have been studied from three manganese nodule-bearing environments in the Central Indian Basin: diatomaceous-radiolarian ooze-clay, pelagic brown clay and calcareous ooze. They have been analysed for major and minor elements such as Si, Al, Ca, Mg, Na, K, Fe, Mn, P, Ti, Ba, Cu, Ni, Co, V, Zn and Cr. R-mode factor analysis reveals five important sources for these elements: (1) detrital (loaded with Fe, Ti, Al, Mg, Mn, P and K), (2) combined hydrogenetic-diagenetic (Mn, Ni, Cu, Co and Fe), (3) biogenic (Si) (4) seasalts (Na and Mg) and (5) dissolution residue (Ba). Factor scores, distributional trends of detrital elements, Al, Ti and Fe concentrations and Al/Al + Fe + Mn ratios provide new geochemical evidence for the effect of the terrigenous influx from the Ganges-Brahmaputra rivers into the northern part of the basin up to 8 degrees S which inhibits the growth of manganese nodules in this area. In contrast, incorporation of transitional metals into sediments and manganese nodules in the other two areas of the basin is governed by hydrogenetic and diagenetic processes
dc.languageen
dc.publisherElsevier
dc.relation.ispartofMar Geol
dc.relation.isreferencedbySCI
dc.subjectGeology and Geophysics
dc.subject.othersediment composition
dc.subject.othergeochemistry
dc.subject.otherocean floor
dc.subject.othersediments
dc.subject.otherISW, Indian Ocean
dc.titleGeochemical evidence of terrigenous influence in deep-sea sediments upto 8°S in the Central Indian basin
dc.typeJournal Article


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