de.pangaea.dataset960335 und dataset PANGAEA

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https://www.pangaea.de/ information pointOfContact 2026-06-18T12:51:46Z https://doi.pangaea.de/10.1594/PANGAEA.960335 2023-07-11T09:31:12 publication https://doi.org/10.1594/PANGAEA.960335 Tsunogai, Shizuo

mag-hu@ees.hokudai.ac.jp

author Nakanishi, Keita author Yamada, Masatoshi author PANGAEA

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https://www.pangaea.de/ information publisher tableDigital The nodules used in this study were collected from two cruises in the western North Pacific by box coring (KH-79-4) and dredging (GH-78-1). After being dried at 110°C each sample extracted from the top, side and bottom of the nodule at various penetration levels were radiochemically analyzed for their Thorium isotopes contents by digesting about 100mg of a nodule sample without application of the successive separation treatment. Thorium in the solution was purified with an anion exchange resin and chemical separation techniques, and electrodeposited onto a silver disc from a hydrochloric acid and ethanol solution. The alpha activities of 228Th, 230Th and 232Th were counted with a spectrometer equipped with a surface barrier silicon detector. The chemical yield was determined by counting the 0 activity of 234Th added before the analysis. The yield ranged from 80 to 95%. completed Tsunogai, Shizuo

mag-hu@ees.hokudai.ac.jp

principalInvestigator Geochemistry growth manganese micronodule manganese nodule ocean Sediment theme 1995-01-01 creation PANGAEA

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https://www.pangaea.de/ information pointOfContact NOAA-MMS NOAA and MMS Marine Minerals Geochemical Database theme 1995-01-01 creation PANGAEA

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https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation 158.55 176.95 8.001 20.0167 1978-01-19T00:00:00 1979-11-01T00:00:00 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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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 (pp. 206) of the related publication. Event label thematicClassification LATITUDE thematicClassification LONGITUDE thematicClassification ELEVATION physicalMeasurement m a.s.l. m a.s.l. Identification thematicClassification Deposit type thematicClassification DEPTH, sediment/rock physicalMeasurement m m Sample type thematicClassification Part analysed Distance physicalMeasurement mm mm Distance, minimum physicalMeasurement mm mm Distance, maximum physicalMeasurement mm mm Thorium-230 physicalMeasurement Alpha spectrometry dpm/g dpm/g Thorium-230, standard deviation physicalMeasurement Alpha spectrometry ± ± Thorium-232 physicalMeasurement Alpha spectrometry dpm/g dpm/g Thorium-232, standard deviation physicalMeasurement Alpha spectrometry ± ± Thorium-228 physicalMeasurement Alpha spectrometry dpm/g dpm/g Thorium-228, standard deviation physicalMeasurement Alpha spectrometry ± ± text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.960335?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: GH78-1-FG73-1 (Station 1036) * LATITUDE: 8.001000 * LONGITUDE: 176.950000 * DATE/TIME: 1978-01-19T00:00:00 * ELEVATION: -5174.0 m * LOCATION: Pacific Ocean * CAMPAIGN: GH78-1 * BASIS: Hakurei-Maru (1974) * METHOD/DEVICE: Grab 1978-01-19T00:00:00 EVENT LABEL: KH-79-4-22 (Station 22) * LATITUDE: 20.016700 * LONGITUDE: 158.550000 * DATE/TIME: 1979-11-01T00:00:00 * ELEVATION: -5560.0 m * LOCATION: Pacific Ocean * CAMPAIGN: KH-79-4 * BASIS: Hakuho-Maru * METHOD/DEVICE: Box corer 1979-11-01T00:00:00 Related to 1982-01-01 publication https://doi.org/10.2343/geochemj.16.199 Tsunogai, Shizuo

mag-hu@ees.hokudai.ac.jp

author Nakanishi, Keita author Yamada, Masatoshi author documentDigital Geochemical Journal 16(4) 199-212 Source 1992-01-01 publication https://doi.org/10.7289/V52Z13FT Grant, John Bruce author Moore, Carla J

carla.j.moore@noaa.gov

https://orcid.org/0000-0002-2610-8648 information author Alameddin, George author Chen, Kuiying author Barton, Mark author documentDigital National Geophysical Data Center, NOAA Further details 1992-01-01 publication https://doi.org/10.7289/V53X84KN Warnken, Robin R

rrw@luna.ngdc.noaa.gov

author Virden, William T author Moore, Carla J

carla.j.moore@noaa.gov

https://orcid.org/0000-0002-2610-8648 information author documentDigital National Geophysical Data Center, NOAA