Sano, Yuji; Toyoda, Kazuhiro; Wakita, Hiroshi (2023): Element and isotope composition of light noble gas in marine ferromanganese nodules [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.954523
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Abstract:
The authors have measured element and isotope compositions of He and Ar gases in 10 nodules dredged from Mariana Trough (opening back-arc basin) and the Ogasawara region on the Hakuho Maru Cruise. After being washed with distilled water, samples were dried and preheated in vacuo at 150°C in a gas extraction system for two days to reduce surface air contamination. Each sample was placed in a doublewalled tantalum crucible with a surrounding tantalum heater and extracted gases at 1700°C . Gas purification was carried out by the two-stage Ti/Zr getter. The He-Ne and Ar fractions were separated by use of charcoal traps held at -196°C. The noble gas isotopes were analysed by a single focusing mass spectrometer (6-60-SGA, Nuclide Co.). A resolving power of ~600 at 1% peak height was attained to separate 3He from H3 + HD.
Related to:
Sano, Yuji; Toyoda, Kazuhiro; Wakita, Hiroshi (1985): 3He/4He ratios of marine ferromanganese nodules. Nature, 317(6037), 518-520, https://doi.org/10.1038/317518a0
Sano, Yuji; Toyoda, Kazuhiro; Wakita, Hiroshi (2023): Major and minor elements of marine ferromanganese nodules [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.954525
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: 23.650524 * Median Longitude: 143.891429 * South-bound Latitude: 20.233333 * West-bound Longitude: 142.967000 * North-bound Latitude: 26.267000 * East-bound Longitude: 144.317000
Date/Time Start: 1984-04-18T00:00:00 * Date/Time End: 1984-05-24T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
KH84-1-2D (KOBAKA8501_1_2) * Latitude: 26.267000 * Longitude: 142.967000 * Date/Time: 1984-04-18T00:00:00 * Elevation: -1430.0 m * Location: Pacific Ocean * Campaign: KH-84-1 (KOBAKA8501,WESTPAC) * Basis: Hakuho-Maru * Method/Device: Dredge (DRG)
KH84-1-3D (KOBAKA8501_1_3) * Latitude: 26.083000 * Longitude: 144.317000 * Date/Time: 1984-04-19T00:00:00 * Elevation: -1050.0 m * Location: Pacific Ocean * Campaign: KH-84-1 (KOBAKA8501,WESTPAC) * Basis: Hakuho-Maru * Method/Device: Dredge (DRG)
KH84-1-5D (KOBAKA8501_1_5) * Latitude: 26.217000 * Longitude: 144.083000 * Date/Time: 1984-04-19T00:00:00 * Elevation: -2430.0 m * Location: Pacific Ocean * Campaign: KH-84-1 (KOBAKA8501,WESTPAC) * Basis: Hakuho-Maru * Method/Device: Dredge (DRG)
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, pp. 519 of the related publication.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Sano, Yuji | |||
| 2 | Latitude of event | Latitude | Sano, Yuji | |||
| 3 | Longitude of event | Longitude | Sano, Yuji | |||
| 4 | Elevation of event | Elevation | m | Sano, Yuji | ||
| 5 | Identification | ID | Sano, Yuji | |||
| 6 | Deposit type | Deposit type | Sano, Yuji | |||
| 7 | DEPTH, sediment/rock | Depth sed | m | Sano, Yuji | Geocode | |
| 8 | Helium-4 | 4He | 10-9 cm3/g | Sano, Yuji | Mass spectrometry | |
| 9 | Neon-20 | 20Ne | 10-10 cm3/g | Sano, Yuji | Mass spectrometry | |
| 10 | Argon-36 | 36Ar | 10-9 cm3/g | Sano, Yuji | Mass spectrometry | |
| 11 | Helium-3/Helium-4 | 3He/4He | 10-4 | Sano, Yuji | Mass spectrometry | |
| 12 | Helium-3/Helium-4, standard deviation | 3He/4He std dev | ± | Sano, Yuji | Mass spectrometry | |
| 13 | Argon-40/Argon-36 | 40Ar/36Ar | Sano, Yuji | Mass spectrometry | ||
| 14 | Argon-40/Argon-36, standard deviation | 40Ar/36Ar std dev | ± | Sano, Yuji | Mass spectrometry | |
| 15 | Argon-38/Argon-36 | 38Ar/36Ar | Sano, Yuji | Mass spectrometry | ||
| 16 | Argon-38/Argon-36, standard deviation | 38Ar/36Ar std dev | ± | Sano, Yuji | Mass spectrometry | |
| 17 | Argon-40, radiogenic | 40Ar* | 10-7 cm3/g | Sano, Yuji | Mass spectrometry |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
115 data points