Mangini, Augusto; Segl, M; Kudrass, Hermann-Rudolph; Wiedicke, Michael; Bonani, G; Hofmann, Hans J; Morenzoni, Elvezio; Nessi, Marzio; Suter, M; Wölfli, W (2023): Th and U isotopes composition of Mn nodule 44 TKD and Mn crust 40 TKD retrieved in the South China sea during expedition SO23/2 (R/V Sonne) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.957826
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Published: 2023-04-25 • DOI registered: 2023-05-24
Abstract:
During the campaign SO23/2 (R/V Sonne) in the South China sea various manganese deposits were retrieved by dredging. Two representative samples were selected for chemical analysis: one Mn crust (0.4 cm thick) attached to a vesicular olivine basalt fragment for station 40KD and one irregular spheroidal shaped Mn nodule with rough surface and a Miocene chalk core for station 44KD. In order to study the distribution of Th and U with distance, samples were drilled and the result was divided in equal parts. Liquid chromatography was used to separate and purify the Th isotopes. U and Th concentrations were determined using alpha spectrometry and 232Th isotope using atomic absorption spectroscopy.
Related to:
Mangini, Augusto; Segl, M; Kudrass, Hermann-Rudolph; Wiedicke, Michael; Bonani, G; Hofmann, Hans J; Morenzoni, Elvezio; Nessi, Marzio; Suter, M; Wölfli, W (1986): Diffusion and supply rates of 10Be and 230Th radioisotopes in two manganese encrustations from the South China Sea. Geochimica et Cosmochimica Acta, 50(1), 149-156, https://doi.org/10.1016/0016-7037(86)90060-8
Mangini, Augusto; Segl, M; Kudrass, Hermann-Rudolph; Wiedicke, Michael; Bonani, G; Hofmann, Hans J; Morenzoni, Elvezio; Nessi, Marzio; Suter, M; Wölfli, W (2023): 10Be and 9Be isotopes composition of Mn nodule 44 TKD and Mn crust 40 TKD retrieved in the South China sea during expedition SO23/2 (R/V Sonne) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.957827
Mangini, Augusto; Segl, M; Kudrass, Hermann-Rudolph; Wiedicke, Michael; Bonani, G; Hofmann, Hans J; Morenzoni, Elvezio; Nessi, Marzio; Suter, M; Wölfli, W (2023): Chemical composition of Mn nodule 44 TKD and Mn crust 40 TKD retrieved in the South China sea during expedition SO23/2 (R/V Sonne) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.957825
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: 12.583008 * Median Longitude: 118.838913 * South-bound Latitude: 12.356317 * West-bound Longitude: 118.817460 * North-bound Latitude: 12.809700 * East-bound Longitude: 118.860367
Date/Time Start: 1982-06-06T00:00:00 * Date/Time End: 1982-06-06T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
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 3 and 4, pp. 151 of the related publication.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Mangini, Augusto | |||
| 2 | Latitude of event | Latitude | Mangini, Augusto | |||
| 3 | Longitude of event | Longitude | Mangini, Augusto | |||
| 4 | Elevation of event | Elevation | m | Mangini, Augusto | ||
| 5 | Identification | ID | Mangini, Augusto | |||
| 6 | Deposit type | Deposit type | Mangini, Augusto | |||
| 7 | DEPTH, sediment/rock | Depth sed | m | Mangini, Augusto | Geocode | |
| 8 | Distance | Dist | mm | Mangini, Augusto | from surface | |
| 9 | Distance, minimum | Dist min | mm | Mangini, Augusto | ||
| 10 | Distance, maximum | Dist max | mm | Mangini, Augusto | ||
| 11 | Thorium-232 | 232Th | mg/kg | Mangini, Augusto | Atomic absorption spectroscopy | |
| 12 | Thorium-232, standard deviation | 232Th std dev | ± | Mangini, Augusto | Atomic absorption spectroscopy | |
| 13 | Thorium-230 | 230Th | dpm/g | Mangini, Augusto | Alpha spectrometry | |
| 14 | Thorium-230, standard deviation | 230Th std dev | ± | Mangini, Augusto | Alpha spectrometry | |
| 15 | Uranium-234 | 234U | dpm/g | Mangini, Augusto | Alpha spectrometry | |
| 16 | Uranium-234, standard deviation | 234U std dev | ± | Mangini, Augusto | Alpha spectrometry | |
| 17 | Thorium-230 excess | 230Th xs | dpm/g | Mangini, Augusto | Alpha spectrometry | |
| 18 | Thorium-230 excess, standard deviation | 230Th xs std dev | ± | Mangini, Augusto | Alpha spectrometry |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
257 data points