Cronan, David S; Glasby, Geoffrey P; Moorby, S A; Thomson, J; Knedler, K E; McDougall, J C (1982): (Table 2, page 458), Isotopic data on manganese oxide crust U23-1 from the south-west Pacific island arc [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.847590, In supplement to: Cronan, DS et al. (1982): A submarine hydrothermal manganese deposit from the south-west Pacific island arc. Nature, 298(5873), 456-458, https://doi.org/10.1038/298456a0
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Project(s):
Coverage:
Latitude: -26.935000 * Longitude: -177.620000
Date/Time Start: 1981-04-01T00:00:00 * Date/Time End: 1981-04-01T00:00:00
Minimum DISTANCE: 0.000 cm * Maximum DISTANCE: 2.700 cm
Event(s):
TANG1122-U23 * Latitude: -26.935000 * Longitude: -177.620000 * Date/Time: 1981-04-01T00:00:00 * Elevation: -1683.0 m * Location: Tonga-Kermadec ridge * Campaign: NZOI-1122 * Basis: Tangaroa (1960) * 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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Cronan, David S | |||
| 2 | DISTANCE | Distance | cm | Cronan, David S | Geocode | |
| 3 | Sample comment | Sample comment | Cronan, David S | |||
| 4 | Depth comment | Depth comm | Cronan, David S | Min [mm] | ||
| 5 | Depth comment | Depth comm | Cronan, David S | Max [mm] | ||
| 6 | Uranium | U | mg/kg | Cronan, David S | Alpha spectrometry | |
| 7 | Uranium, standard deviation | U std dev | ± | Cronan, David S | ||
| 8 | Thorium | Th | mg/kg | Cronan, David S | Alpha spectrometry | |
| 9 | Thorium, standard deviation | Th std dev | ± | Cronan, David S | ||
| 10 | Uranium/Thorium ratio | U/Th | Cronan, David S | Calculated | ||
| 11 | Uranium/Thorium ratio, standard deviation | U/Th std dev | ± | Cronan, David S | ||
| 12 | Uranium-234/Uranium-238 activity ratio | (234U/238U) | Cronan, David S | Calculated | ||
| 13 | Uranium-234/Uranium-238 activity ratio, standard deviation | (234U/238U) std dev | ± | Cronan, David S | ||
| 14 | Thorium-230/Uranium-232 ratio | 230Th/232U | Cronan, David S | Calculated | ||
| 15 | Thorium-230/Uranium-232 ratio, standard deviation | 230Th/232U std dev | ± | Cronan, David S | ||
| 16 | Uranium-234 | 234U | dpm/g | Cronan, David S | Alpha spectrometry | |
| 17 | Uranium-234, standard deviation | 234U std dev | ± | Cronan, David S | ||
| 18 | Thorium-230 | 230Th | dpm/g | Cronan, David S | Alpha spectrometry | |
| 19 | Thorium-230, standard deviation | 230Th std dev | ± | Cronan, David S | ||
| 20 | Thorium-230/Uranium-234 ratio | 230Th/234U | Cronan, David S | Calculated | ||
| 21 | Thorium-230/Uranium-234 ratio, standard deviation | 230Th/234U std dev | ± | Cronan, David S | ||
| 22 | Age, dated | Age dated | ka | Cronan, David S | Calculated | from ingrowth of 230Th towards radioactive equilibrium with 234U, where initial 230Th is assumed to be zero |
| 23 | Age, dated standard deviation | Age dated std dev | ± | Cronan, David S |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
150 data points
Data
| 1 Sample label | 2 Distance [cm] | 3 Sample comment | 4 Depth comm (Min [mm]) | 5 Depth comm (Max [mm]) | 6 U [mg/kg] (Alpha spectrometry) | 7 U std dev [±] | 8 Th [mg/kg] (Alpha spectrometry) | 9 Th std dev [±] | 10 U/Th (Calculated) | 11 U/Th std dev [±] | 12 (234U/238U) (Calculated) | 13 (234U/238U) std dev [±] | 14 230Th/232U (Calculated) | 15 230Th/232U std dev [±] | 16 234U [dpm/g] (Alpha spectrometry) | 17 234U std dev [±] | 18 230Th [dpm/g] (Alpha spectrometry) | 19 230Th std dev [±] | 20 230Th/234U (Calculated) | 21 230Th/234U std dev [±] | 22 Age dated [ka] (from ingrowth of 230Th toward...) | 23 Age dated std dev [±] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| U23/1 | 0.000 | Surface granular layer | 0 | 2 | 6.88 | 0.28 | 0.25 | 0.10 | 28.0 | 11.0 | 1 | 0.06 | 94.0 | 36.0 | 5.59 | 0.22 | 5.79 | 0.24 | 1.04 | 0.06 | ||
| U23/1 | 0.200 | 0-4 mm from base of granular layer | 2 | 6 | 8.97 | 0.23 | 0.71 | 0.13 | 13.0 | 2.0 | 1 | 0.03 | 16.0 | 3.0 | 7.86 | 0.19 | 2.77 | 0.14 | 0.35 | 0.02 | 46.200 | 3.400 |
| U23/1 | 0.700 | 4-10 mm | 6 | 12 | 4.83 | 0.15 | 0.31 | 0.06 | 16.0 | 3.0 | 1 | 0.05 | 11.0 | 2.0 | 4.47 | 0.13 | 0.83 | 0.05 | 0.19 | 0.01 | 22.700 | 1.400 |
| U23/1 | 1.250 | 10-15 mm | 12 | 17 | 13.90 | 0.40 | 0.96 | 0.12 | 14.0 | 2.0 | 1 | 0.03 | 8.5 | 1.1 | 11.33 | 0.31 | 1.98 | 0.09 | 0.17 | 0.01 | 20.200 | 1.300 |
| U23/1 | 1.750 | 15-20 mm | 17 | 22 | 4.89 | 0.20 | 0.75 | 0.10 | 6.5 | 0.9 | 1 | 0.05 | 6.2 | 0.9 | 3.87 | 0.16 | 1.14 | 0.06 | 0.29 | 0.02 | 37.100 | 3.200 |
| U23/1 | 2.350 | 20-27 mm | 22 | 29 | 3.69 | 0.11 | 0.38 | 0.06 | 9.7 | 1.6 | 1 | 0.04 | 13.0 | 2.0 | 3.03 | 0.09 | 1.15 | 0.05 | 0.38 | 0.02 | 51.500 | 3.600 |
| U23/1 | >2.700 | 27-beyond until base layer | 29 | 40 | 3.77 | 0.13 | 1.60 | 0.20 | 2.4 | 0.3 | 1 | 0.05 | 14.0 | 2.0 | 3.37 | 0.11 | 5.43 | 0.20 | 1.61 | 0.07 |