Andrews, James E; Friedrich, Günther H W (2022): Main chemical elements concentration in manganese nodules retrieved in the northeast equatorial Pacific during the R/V Valdivia VA-13/2 campaign [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.942741
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Abstract:
Manganese nodule deposits exhibit variabity in distribution, deposit density, nodule morphology, and chemistry on scales of meters to thousands of kilometers. The Challenger Expedition recognized sufficient variation in nodule form to permit identification of a station location by inspection of a specimen nodule. The existence of a copper/nickel-rich nodule belt north of the equator in the Pacific was recognized in the 1950s and its character emphasized by early work of the IDOE Manganese Nodule Project. Through field work by the IDOE Project and by research programs in Germany and France, it has been posible to examine the detail of variability within well-defined regional patterns. Data from four small areas studied by the R/V Kana Keoki , R/V Moana Wave , and the F/S Valdivia , plus regional data within the Pacific equatorial nodule belt, show that the deposit variability is as high on a local as on a regional scale.
An area 20 x 20 nautical miles, within the abyssal hill region of the northern Central Pacific, has been sampled intensively by R/V Valdivia during the VA-13/2 campaign. Selected manganese nodules retrieved either from free fall or box grabs were later analysed in laboratory using atomic absorption spectroscopy (AAS). It is likely that the samples were dried at 110°C for 24 hours and then ground for analytical purposes.
Related to:
Andrews, James E; Friedrich, Günther H W (1979): Distribution patterns of manganese nodule deposits in the northeast equatorial Pacific. Marine Mining, 2(1-2), 43 pp
Andrews, James E; Friedrich, Günther H W (1980): Distribution Patterns of Manganese Nodule Deposits in The North-East Equatorial Pacific. In: Varentsov, I. M. and Grasselly, G. (eds) Geology and Geochemistry of Manganese. Stuttgart, Germany: E. Schweizerbart'sche Verlagsbuchhandlung, 107-136, Andrews_1980.pdf
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
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
Further details:
von Stackelberg, Ulrich (1976): Vorhaben Manganknollen IV - VA-13/2 - mit FS "Valdivia" - Zentraler Pazifischer Ozean - 1976, Fahrtbericht. Bundesanstalt für Geowissenschaften und Rohstoffe, Hannover, Archiv-Nr.: 074329, 70 pp, https://doi.org/10.2312/cr_va-13_2
Project(s):
Coverage:
Median Latitude: 9.365817 * Median Longitude: -145.978129 * South-bound Latitude: 9.252112 * West-bound Longitude: -146.085307 * North-bound Latitude: 9.522135 * East-bound Longitude: -145.805000
Date/Time Start: 1976-02-09T00:00:00 * Date/Time End: 1976-02-09T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
VA13-2-17GBH * Latitude: 9.522135 * Longitude: -146.058559 * Date/Time: 1976-02-09T00:00:00 * Elevation: -5241.0 m * Location: Pacific Ocean * Campaign: VA-13/2 * Basis: Valdivia (1961) * Method/Device: Free-fall grab (FFGR)
VA13-2-24KAL * Latitude: 9.505000 * Longitude: -146.048000 * Date/Time: 1976-02-09T00:00:00 * Elevation: -5296.0 m * Location: Pacific Ocean * Campaign: VA-13/2 * Basis: Valdivia (1961) * Method/Device: Box corer (BC)
VA13-2-44KA * Latitude: 9.293000 * Longitude: -146.050000 * Date/Time: 1976-02-09T00:00:00 * Elevation: -4973.0 m * Location: Pacific Ocean * Campaign: VA-13/2 * Basis: Valdivia (1961) * Method/Device: Box corer (BC)
Comment:
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 | Andrews, James E | |||
| 2 | Identification | ID | Andrews, James E | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Andrews, James E | Geocode | |
| 4 | Deposit type | Deposit type | Andrews, James E | |||
| 5 | Manganese | Mn | % | Andrews, James E | Atomic absorption spectrometry (AAS) | |
| 6 | Iron | Fe | % | Andrews, James E | Atomic absorption spectrometry (AAS) | |
| 7 | Nickel | Ni | % | Andrews, James E | Atomic absorption spectrometry (AAS) | |
| 8 | Copper | Cu | % | Andrews, James E | Atomic absorption spectrometry (AAS) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
252 data points