Nohara, Masato (1978): (Table 2, Page 287) Chemical composition of manganese nodules from GH76-1 cruise [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.863816, Supplement to: Nohara, M (1978): The geochemistry of manganese nodules from the Central Pacific Basin. Journal of the Geological Society of Japan, 84(6), 281-298, https://doi.org/10.5575/geosoc.84.281
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
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.
Related to:
Nohara, Masato (1978): (Table 4+5, Page 290) Distribution of Mn, Fe, Cu. Pb, Zn, Ni and Co in single manganese nodules [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.859840
Source:
Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT
Further details:
Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN
Project(s):
Coverage:
Median Latitude: 8.332072 * Median Longitude: -172.793725 * South-bound Latitude: 4.990000 * West-bound Longitude: -174.038330 * North-bound Latitude: 10.013330 * East-bound Longitude: -169.986670
Date/Time Start: 1976-01-27T00:00:00 * Date/Time End: 1976-02-29T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
GH76-1-FG5-2 (Station 407) * Latitude: 9.006670 * Longitude: -174.005000 * Date/Time: 1976-01-27T00:00:00 * Elevation: -5920.0 m * Location: Pacific Ocean * Campaign: GH76-1 * Basis: Hakurei-Maru (1974) * Method/Device: Free-fall grab (FFGR)
GH76-1-FG6-2 (Station 408) * Latitude: 10.013330 * Longitude: -173.995000 * Date/Time: 1976-01-28T00:00:00 * Elevation: -5820.0 m * Location: Pacific Ocean * Campaign: GH76-1 * Basis: Hakurei-Maru (1974) * Method/Device: Free-fall grab (FFGR)
GH76-1-FG7-1 (Station 409) * Latitude: 10.005000 * Longitude: -173.000000 * Date/Time: 1976-01-28T00:00:00 * Elevation: -5830.0 m * Location: Pacific Ocean * Campaign: GH76-1 * Basis: Hakurei-Maru (1974) * Method/Device: Free-fall grab (FFGR)
Comment:
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.
From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Nohara, Masato | |||
| 2 | Date/Time of event | Date/Time | Nohara, Masato | |||
| 3 | Latitude of event | Latitude | Nohara, Masato | |||
| 4 | Longitude of event | Longitude | Nohara, Masato | |||
| 5 | Elevation of event | Elevation | m | Nohara, Masato | ||
| 6 | Sample ID | Sample ID | Nohara, Masato | |||
| 7 | DEPTH, sediment/rock | Depth sed | m | Nohara, Masato | Geocode | |
| 8 | Manganese | Mn | % | Nohara, Masato | Atomic absorption spectrometry (AAS), Perkin-Elmer | |
| 9 | Iron | Fe | % | Nohara, Masato | Atomic absorption spectrometry (AAS), Perkin-Elmer | |
| 10 | Copper | Cu | % | Nohara, Masato | Atomic absorption spectrometry (AAS), Perkin-Elmer | |
| 11 | Lead | Pb | % | Nohara, Masato | Atomic absorption spectrometry (AAS), Perkin-Elmer | |
| 12 | Zinc | Zn | % | Nohara, Masato | Atomic absorption spectrometry (AAS), Perkin-Elmer | |
| 13 | Nickel | Ni | % | Nohara, Masato | Atomic absorption spectrometry (AAS), Perkin-Elmer | |
| 14 | Cobalt | Co | % | Nohara, Masato | Atomic absorption spectrometry (AAS), Perkin-Elmer |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
296 data points