(Table 2, Page 287) Chemical composition of manganese nodules from GH76-1 cruise
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
1978
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| _version_ | 1867168174730903552 |
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| author | Nohara, Masato |
| author_facet | Nohara, Masato |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_863816 |
| institution | PANGAEA |
| language | en |
| publishDate | 1978 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 2, Page 287) Chemical composition of manganese nodules from GH76-1 cruise Nohara, Masato Atomic absorption spectrometry (AAS), Perkin-Elmer; Cobalt; Copper; Date/Time of event; DEPTH, sediment/rock; Elevation of event; Event label; FFGR; Free-fall grab; GH76-1; GH76-1-FG10-2; GH76-1-FG12-1; GH76-1-FG19-1; GH76-1-FG19-2; GH76-1-FG20-2; GH76-1-FG22-1; GH76-1-FG25-2; GH76-1-FG27-1; GH76-1-FG27-2; GH76-1-FG28-2; GH76-1-FG29-1; GH76-1-FG29-2; GH76-1-FG31-1; GH76-1-FG32-1; GH76-1-FG32-2; GH76-1-FG32-3; GH76-1-FG32-4; GH76-1-FG32-5; GH76-1-FG32-6; GH76-1-FG32-7; GH76-1-FG32-8; GH76-1-FG5-2; GH76-1-FG6-2; GH76-1-FG7-1; GH76-1-FG8-2; GH76-1-G171; GH76-1-G172; GH76-1-G175; GH76-1-G181; GH76-1-G182; GH76-1-G183; GH76-1-G186; GH76-1-G187; GH76-1-G188; GH76-1-G190; GH76-1-G193; GH76-1-G195; Hakurei-Maru (1974); Iron; Latitude of event; Lead; Longitude of event; Manganese; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; O70; Ocean 70 grab; Pacific Ocean; Sample ID; Station 407; Station 407A-2; Station 408; Station 409; Station 410; Station 411; Station 412; Station 414; Station 414A; Station 414A-2; Station 417; Station 418; Station 419; Station 422; Station 423; Station 424; Station 426; Station 429; Station 430; Station 431; Station 433; Zinc 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. |
| title | (Table 2, Page 287) Chemical composition of manganese nodules from GH76-1 cruise |
| topic | Atomic absorption spectrometry (AAS), Perkin-Elmer; Cobalt; Copper; Date/Time of event; DEPTH, sediment/rock; Elevation of event; Event label; FFGR; Free-fall grab; GH76-1; GH76-1-FG10-2; GH76-1-FG12-1; GH76-1-FG19-1; GH76-1-FG19-2; GH76-1-FG20-2; GH76-1-FG22-1; GH76-1-FG25-2; GH76-1-FG27-1; GH76-1-FG27-2; GH76-1-FG28-2; GH76-1-FG29-1; GH76-1-FG29-2; GH76-1-FG31-1; GH76-1-FG32-1; GH76-1-FG32-2; GH76-1-FG32-3; GH76-1-FG32-4; GH76-1-FG32-5; GH76-1-FG32-6; GH76-1-FG32-7; GH76-1-FG32-8; GH76-1-FG5-2; GH76-1-FG6-2; GH76-1-FG7-1; GH76-1-FG8-2; GH76-1-G171; GH76-1-G172; GH76-1-G175; GH76-1-G181; GH76-1-G182; GH76-1-G183; GH76-1-G186; GH76-1-G187; GH76-1-G188; GH76-1-G190; GH76-1-G193; GH76-1-G195; Hakurei-Maru (1974); Iron; Latitude of event; Lead; Longitude of event; Manganese; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; O70; Ocean 70 grab; Pacific Ocean; Sample ID; Station 407; Station 407A-2; Station 408; Station 409; Station 410; Station 411; Station 412; Station 414; Station 414A; Station 414A-2; Station 417; Station 418; Station 419; Station 422; Station 423; Station 424; Station 426; Station 429; Station 430; Station 431; Station 433; Zinc |
| url | https://doi.org/10.1594/PANGAEA.863816 |