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Moore, Willard S; Ku, Teh-Lung; MacDougall, J Douglas; Burns, Virginia Mee; Burns, Roger G; Dymond, Jack R; Lyle, Mitchell W; Piper, David Z (2023): Radiochemical data for a manganese nodule sample from the MN7601-PLEIADES campaign (R/V Melville) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.959682

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Published: 2023-06-26DOI registered: 2023-07-28

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Abstract:
Using radiochemical methods, the authors have measured the distribution of uranium, thorium, radium, polonium and protactinium isotopes from the top and bottom sides of the a manganese nodule from Station 20 of the PLEIADES Mn7601 campaign. This "apple" shaped nodule (6.5x3.0 cm) was laying on a bed of siliceous ooze (see illustrations). Successive thin layers of the nodule were carefully scraped from the surface of the measured area with a sharp surgical blade. All samples reduced to powder were air-dried at 110°C for at least two hours before analysis. The relative gross alpha activities from each layer were assayed by Alpha spectrometry using a thick-source counting in a scintillation counter.
Keyword(s):
Geochemistry; manganese micronodule; manganese nodule; ocean; sediment
Related to:
Moore, Willard S; Ku, Teh-Lung; MacDougall, J Douglas; Burns, Virginia Mee; Burns, Roger G; Dymond, Jack R; Lyle, Mitchell W; Piper, David Z (1981): Fluxes of metals to a manganese nodule radiochemical, chemical, structural, and mineralogical studies. Earth and Planetary Science Letters, 52(1), 151-171, https://doi.org/10.1016/0012-821X(81)90217-X
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
Coverage:
Latitude: 11.072000 * Longitude: -140.047000
Date/Time Start: 1976-08-27T00:00:00 * Date/Time End: 1976-08-27T00:00:00
Minimum Elevation: -4722.0 m * Maximum Elevation: -4722.0 m
Event(s):
PLDS04MV-109BX * Latitude: 11.072000 * Longitude: -140.047000 * Date/Time: 1976-08-27T00:00:00 * Elevation: -4722.0 m * Recovery: 0.29 m * Location: Pacific Ocean * Campaign: PLDS-4 (MN76-01, Pleiades) * Basis: Melville * 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.
This dataset represents the digitized Table 1-2, pp. 154 of the related publication.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventMoore, Willard S
2Latitude of eventLatitudeMoore, Willard S
3Longitude of eventLongitudeMoore, Willard S
4Elevation of eventElevationmMoore, Willard S
5IdentificationIDMoore, Willard S
6Deposit typeDeposit typeMoore, Willard S
7DEPTH, sediment/rockDepth sedmMoore, Willard SGeocode
8DISTANCEDistancecmMoore, Willard SGeocode – from surface
9Distance, minimumDist minmmMoore, Willard S
10Distance, maximumDist maxmmMoore, Willard S
11Sample typeSamp typeMoore, Willard SPart analysed
12Uranium-238238Udpm/gMoore, Willard SAlpha spectrometry
13Uranium-234234Udpm/gMoore, Willard SAlpha spectrometry
14Thorium-230230Thdpm/gMoore, Willard SAlpha spectrometry
15Radium-226226Radpm/gMoore, Willard SAlpha spectrometry
16Polonium-210210Podpm/gMoore, Willard SAlpha spectrometry
17Thorium-232232Thdpm/gMoore, Willard SAlpha spectrometry
18Thorium-228228Thdpm/gMoore, Willard SAlpha spectrometry
19Protactinium-231231Padpm/gMoore, Willard SAlpha spectrometry
20Thorium-230 excess230Th xsdpm/gMoore, Willard SAlpha spectrometry
21Thorium-230 excess, standard deviation230Th xs std dev±Moore, Willard SAlpha spectrometry
22Protactinium-231 excess231Pa xsdpm/gMoore, Willard SAlpha spectrometry
23Protactinium-231 excess, standard deviation231Pa xs std dev±Moore, Willard SAlpha spectrometry
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
218 data points

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