(Table 2, Page 287) Chemical composition of manganese nodules from GH76-1 cruise, supplement to: Nohara, Masato (1978): The geochemistry of manganese nodules from the Central Pacific Basin. Journal of the Geological Society of Japan, 84(6), 281-298


Chemical analyses of manganese nodules from the Central Pacific Basin show that their chemical composition varies regionally, although that of the associated sediments is markedly uniform throughout the basin. Mn content varies from 16 to 32% in average. Its higher value is generally found in nodules from siliceous clay and a few from deep-sea clay. Fe content tends to enrich in nodules from deep-sea clay area. Most manganese nodules, except those from deep-sea clay, are remarkably depleted in Fe compared with ones from the other Pacific regions. Mostly, Cu and Ni contents exceed 1% in nodules from siliceous clay, and decrease towards the northwest of the basin where deep-sea clay is distributed. The inter-element relationship between manganese nodules and associated sediments suggests that the mechanism of incorporation of major and minor elements in nodules is apparently different from that of the associated sediments. This finding seems to provide a new interpretation on the problem why manganese nodules having low accumulation rate are not buried by the associated sediments with greater sedimentation rate and then occur on sediment-seawater interface. Samples have been dried at 105°C for 4 hours. Analysis has been performed on the digested part of the samples in an HF-HCLO4-HNO3 solution.

DOI https://doi.org/10.1594/PANGAEA.863816
Related Identifier https://doi.org/10.5575/geosoc.84.281
Related Identifier https://doi.org/10.1594/PANGAEA.859840
Related Identifier https://doi.org/10.7289/V52Z13FT
Related Identifier https://doi.org/10.7289/V53X84KN
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.863816
Creator Nohara, Masato
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 1978
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 296 data points
Discipline Earth System Research
Spatial Coverage (-174.038W, 4.990S, -169.987E, 10.013N); Pacific Ocean
Temporal Coverage Begin 1976-01-27T00:00:00Z
Temporal Coverage End 1976-02-29T00:00:00Z