Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp Nakanishi Keita Yamada Masatoshi 2023 Concentration of Th isotopes for manganese nodules at various levels of their external manganese rich layers dataset https://doi.org/10.1594/PANGAEA.960335 2023-07-11T09:31:12 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%. Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp Nakanishi Keita Yamada Masatoshi 1982 Effect of diagenetically remobilized metals on regional difference in manganese nodules Geochemical Journal 16(4) https://doi.org/10.2343/geochemj.16.199 199-212 Grant John Bruce Moore Carla J carla.j.moore@noaa.gov 0000-0002-2610-8648 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 rrw@luna.ngdc.noaa.gov Virden William T Moore Carla J carla.j.moore@noaa.gov 0000-0002-2610-8648 1992 The NOAA and MMS Marine Minerals Bibliography National Geophysical Data Center, NOAA https://doi.org/10.7289/V53X84KN 158.55 176.95 8.001 20.0167 168.01285714285706 13.837197142857134 1978-01-19T00:00:00 1979-11-01T00:00:00 -5560.0 -5174.0 point NOAA-MMS NOAA and MMS Marine Minerals Geochemical Database https://wiki.pangaea.de/wiki/NOAA-MMS GH78-1-FG73-1 Station 1036 8.001 176.95 Pacific Ocean -5174.0 1978-01-19T00:00:00 GH78-1 GH78-1 https://www.gsj.jp/en/publications/cruise-rep/cruise17.html 1978-01-07T00:00:00 1978-01-07 1978-03-07T00:00:00 1978-03-07 Hakurei-Maru (1974) https://www.jodc.go.jp/JGOFS_DMO/testpage/Ships/Hakurei.htm Moritani, Tomoyuki Moritani, Tomoyuki Hakurei-Maru (1974) https://www.jodc.go.jp/JGOFS_DMO/testpage/Ships/Hakurei.htm Grab GRAB KH-79-4-22 Station 22 20.0167 158.55 Pacific Ocean -5560.0 1979-11-01T00:00:00 KH-79-4 KH-79-4 1979-11-01T00:00:00 1979-11-01 1979-11-01T00:00:00 1979-11-01 Hakuho-Maru https://www.jamstec.go.jp/e/about/equipment/ships/hakuhomaru.html Hakuho-Maru https://www.jamstec.go.jp/e/about/equipment/ships/hakuhomaru.html Box corer BC http://en.wikipedia.org/wiki/Box_corer 399 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ 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 Event Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp Event LATITUDE Latitude http://en.wikipedia.org/wiki/ISO_6709 Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp Latitude LONGITUDE Longitude http://en.wikipedia.org/wiki/ISO_6709 Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp Longitude ELEVATION Elevation m a.s.l. http://en.wikipedia.org/wiki/Elevation elevation http://purl.obolibrary.org/obo/PATO_0001687 Length L http://dbpedia.org/resource/Length Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp Elevation [m a.s.l.] Identification ID Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp ID Deposit type Deposit type Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp Deposit type DEPTH, sediment/rock Depth sed m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock Length L http://dbpedia.org/resource/Length Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp Depth sed [m] Sample type Samp type Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp Part analysed Samp type Distance Dist mm distance http://purl.obolibrary.org/obo/PATO_0000040 Length L http://dbpedia.org/resource/Length Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp Dist [mm] Distance, minimum Dist min mm distance http://purl.obolibrary.org/obo/PATO_0000040 minimum Length L http://dbpedia.org/resource/Length Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp Dist min [mm] Distance, maximum Dist max mm distance http://purl.obolibrary.org/obo/PATO_0000040 maximum Length L http://dbpedia.org/resource/Length Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp Dist max [mm] Thorium-230 230Th dpm/g thorium-230 230Th https://en.wikipedia.org/wiki/Isotopes_of_thorium#Thorium-230 Alpha spectrometry Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp 230Th [dpm/g] Thorium-230, standard deviation 230Th std dev ± thorium-230 230Th https://en.wikipedia.org/wiki/Isotopes_of_thorium#Thorium-230 standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Alpha spectrometry Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp 230Th std dev [±] Thorium-232 232Th dpm/g thorium-232 232Th https://en.wikipedia.org/wiki/Isotopes_of_thorium Alpha spectrometry Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp 232Th [dpm/g] Thorium-232, standard deviation 232Th std dev ± thorium-232 232Th https://en.wikipedia.org/wiki/Isotopes_of_thorium standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Alpha spectrometry Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp 232Th std dev [±] Thorium-228 228Th dpm/g thorium-228 228Th https://en.wikipedia.org/wiki/Isotopes_of_thorium#Thorium-228 Alpha spectrometry Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp 228Th [dpm/g] Thorium-228, standard deviation 228Th std dev ± thorium-228 228Th https://en.wikipedia.org/wiki/Isotopes_of_thorium#Thorium-228 standard deviation std dev https://en.wikipedia.org/wiki/Standard_deviation Alpha spectrometry Tsunogai Shizuo mag-hu@ees.hokudai.ac.jp 228Th std dev [±] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable Geochemistry growth manganese micronodule manganese nodule ocean Sediment author100426 author21391 author21495 author53898 author53899 author53900 author53901 author53916 author568 author69553 basis235 basis4021 campaign3374367 campaign3374385 campaign49541 campaign49542 curlevel30 event3064410 event3064411 geocode1 geocode1599 geocode1600 geocode1601 geocode500000 geocode8128 journal6004 license21 method10832 method11098 method57 param144378 param144379 param144749 param1553 param1554 param171658 param26640 param4949 param4954 param7056 param7059 param98 pi21495 project4198 ref119145 ref67195 ref67263 term1073131 term1073628 term1073934 term20898 term267 term37764 term38263 term38492 term40009 term40027 term40741 term41019 term41056 term43863 term47305 term48823 term49379 term70603 term70672 topotype2