/* DATA DESCRIPTION: Citation: Tsunogai, Shizuo; Nakanishi, Keita; Yamada, Masatoshi (2023): Concentration of Th isotopes for manganese nodules at various levels of their external manganese rich layers [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.960335 Abstract: 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%. Keyword(s): Geochemistry; growth; manganese micronodule; manganese nodule; ocean; Sediment Related to: Tsunogai, Shizuo; Nakanishi, Keita; Yamada, Masatoshi (1982): Effect of diagenetically remobilized metals on regional difference in manganese nodules. Geochemical Journal, 16(4), 199-212, https://doi.org/10.2343/geochemj.16.199 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): NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS) (URI: https://wiki.pangaea.de/wiki/NOAA-MMS) Coverage: MEDIAN LATITUDE: 13.837197 * MEDIAN LONGITUDE: 168.012857 * SOUTH-BOUND LATITUDE: 8.001000 * WEST-BOUND LONGITUDE: 158.550000 * NORTH-BOUND LATITUDE: 20.016700 * EAST-BOUND LONGITUDE: 176.950000 DATE/TIME START: 1978-01-19T00:00:00 * DATE/TIME END: 1979-11-01T00:00:00 MINIMUM ELEVATION: -5560.0 m * MAXIMUM ELEVATION: -5174.0 m Event(s): 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 (URI: https://www.gsj.jp/en/publications/cruise-rep/cruise17.html) * BASIS: Hakurei-Maru (1974) (URI: https://www.jodc.go.jp/JGOFS_DMO/testpage/Ships/Hakurei.htm) * METHOD/DEVICE: Grab (GRAB) 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 (URI: https://www.jamstec.go.jp/e/about/equipment/ships/hakuhomaru.html) * METHOD/DEVICE: Box corer (BC) (URI: http://en.wikipedia.org/wiki/Box_corer) 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 (pp. 206) of the related publication. Parameter(s): Event label (Event) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) LATITUDE (Latitude) * GEOCODE * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) LONGITUDE (Longitude) * GEOCODE * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) ELEVATION [m a.s.l.] (Elevation) * GEOCODE * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) Identification (ID) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) Deposit type (Deposit type) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) DEPTH, sediment/rock [m] (Depth sed) * GEOCODE * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) Sample type (Samp type) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) * COMMENT: Part analysed Distance [mm] (Dist) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) Distance, minimum [mm] (Dist min) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) Distance, maximum [mm] (Dist max) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) Thorium-230 [dpm/g] (230Th) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) * METHOD/DEVICE: Alpha spectrometry Thorium-230, standard deviation [±] (230Th std dev) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) * METHOD/DEVICE: Alpha spectrometry Thorium-232 [dpm/g] (232Th) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) * METHOD/DEVICE: Alpha spectrometry Thorium-232, standard deviation [±] (232Th std dev) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) * METHOD/DEVICE: Alpha spectrometry Thorium-228 [dpm/g] (228Th) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) * METHOD/DEVICE: Alpha spectrometry Thorium-228, standard deviation [±] (228Th std dev) * PI: Tsunogai, Shizuo (mag-hu@ees.hokudai.ac.jp) * METHOD/DEVICE: Alpha spectrometry License: Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) Status: Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) Size: 399 data points */ Event Latitude Longitude Elevation [m a.s.l.] ID Deposit type Depth sed [m] Samp type Dist [mm] Dist min [mm] Dist max [mm] 230Th [dpm/g] 230Th std dev [±] 232Th [dpm/g] 232Th std dev [±] 228Th [dpm/g] 228Th std dev [±] KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82t01 Mn nodule 0 Top 0.040 0.00 0.08 831.00 40.00 24.10 1.60 20.80 1.40 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82t02 Mn nodule 0 Top 0.120 0.08 0.16 609.00 34.00 20.50 1.50 17.80 1.30 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82t03 Mn nodule 0 Top 0.225 0.16 0.29 430.00 24.00 20.10 1.30 18.90 1.30 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82t04 Mn nodule 0 Top 0.365 0.29 0.44 330.00 16.00 18.20 1.00 18.10 1.00 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82t05 Mn nodule 0 Top 0.505 0.44 0.57 257.00 15.00 16.40 1.30 18.80 1.40 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82s01 Mn nodule 0 Side 0.145 0.00 0.29 676.00 38.00 22.10 1.40 19.20 1.30 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82s02 Mn nodule 0 Side 0.485 0.29 0.68 110.70 5.40 14.70 0.90 14.80 0.90 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82s03 Mn nodule 0 Side 0.950 0.68 1.22 22.70 1.50 14.40 1.10 15.10 1.00 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82s04 Mn nodule 0 Side 1.565 1.22 1.91 10.70 0.70 9.30 0.60 11.60 0.80 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82b01 Mn nodule 0 Bottom 0.145 0.00 0.29 52.50 2.20 10.30 0.80 15.90 1.00 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82b02 Mn nodule 0 Bottom 0.415 0.29 0.54 21.50 1.20 12.50 0.80 13.30 0.90 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82b03 Mn nodule 0 Bottom 0.630 0.54 0.72 20.40 1.20 9.50 0.70 11.10 0.80 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82b04 Mn nodule 0 Bottom 0.825 0.72 0.93 20.00 1.10 10.70 0.80 13.00 0.90 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82b05 Mn nodule 0 Bottom 1.045 0.93 1.16 14.10 1.00 8.50 0.70 9.00 0.70 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82i10A Mn nodule 0 Interior 10(A) 10.94 0.79 6.62 0.54 7.91 0.61 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82i10B Mn nodule 0 Interior 10(B) 6.07 0.45 5.55 0.42 6.52 0.47 KH-79-4-22 20.0167 158.55 -5560 KH-79-4-22-1TSN82i10C Mn nodule 0 Interior 10(C) 3.72 0.25 2.90 0.21 3.74 0.25 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNt01 Mn nodule 0 Top 0.170 0.00 0.34 567.00 15.00 16.30 1.30 16.40 1.30 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNt02 Mn nodule 0 Top 0.870 0.34 1.40 59.70 2.50 14.30 1.10 14.60 1.10 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNt03 Mn nodule 0 Top 2.115 1.40 2.83 33.90 1.60 12.00 0.90 14.60 1.00 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNt04 Mn nodule 0 Top 3.060 2.83 3.29 27.90 1.90 7.60 0.80 9.20 1.50 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNs01 Mn nodule 0 Side 0.080 0.00 0.16 1004.00 46.00 16.50 1.10 17.10 1.10 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNs02 Mn nodule 0 Side 0.240 0.16 0.32 394.00 22.00 12.60 1.00 16.80 1.20 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNs03 Mn nodule 0 Side 0.410 0.32 0.50 197.00 11.00 14.60 1.20 15.40 1.20 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNs04 Mn nodule 0 Side 0.615 0.50 0.73 101.50 5.00 13.60 0.90 14.10 0.90 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNs05 Mn nodule 0 Side 0.855 0.73 0.98 80.80 4.70 10.80 0.80 12.40 0.90 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNb01 Mn nodule 0 Bottom 0.165 0.00 0.33 531.00 26.00 11.70 0.90 16.60 1.10 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNb02 Mn nodule 0 Bottom 0.740 0.53 0.95 188.00 11.00 11.80 0.90 12.90 0.90 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNb03 Mn nodule 0 Bottom 0.950 0.72 1.18 22.50 1.30 9.40 0.70 11.90 0.80 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNb04 Mn nodule 0 Bottom 1.130 0.95 1.31 90.40 5.30 11.00 0.80 13.60 1.00 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNb05 Mn nodule 0 Bottom 1.565 1.31 1.82 20.00 1.40 10.30 0.80 12.20 0.90 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNi10D Mn nodule 0 Interior 10(D) 10.38 0.72 4.73 0.39 6.80 0.51 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNi12E Mn nodule 0 Interior 12(E) 10.56 0.77 4.88 0.44 8.39 0.65 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNi17F Mn nodule 0 Interior 17(F) 8.22 0.60 5.27 0.43 6.76 0.52 GH78-1-FG73-1 8.0010 176.95 -5174 GH78-1-FG73-1-1TSNi20G Mn nodule 0 Interior 20(G) 5.50 0.42 4.13 0.34 5.83 0.44