Lalou, Claude (2023): Radiochemical data for manganese crust sample CYP-74-26-12 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.956428
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2023-03-14 • DOI registered: 2023-04-12
Abstract:
Scoriaceous Mn crust fragments on travertine-like nontronite deposit were retrieved near two hydrothermal vents while surveying the rift valley of the Mid-Atlantic Ridge using the diving saucer "CYANA". They have been examined with SEM and with an EDAX (X-ray energy dispersive analysis) apparatus coupled to SEM. Fifteen successive thin layers were taken from the upper surface downward. They were totally dissolved in HCl-HF-HClO4 and spiked with 232U and 228Th as yield tracers. Thin sources of purified U::and Th were prepared and counted by alpha spectrometry.
Related to:
Lalou, Claude; Brichet, Evelyne; Ku, Teh-Lung; Jehanno, Celestine (1977): Radiochemical, scanning electron microscope (SEM) and X-ray dispersive energy (EDAX) studies of a FAMOUS hydrothermal deposit. Marine Geology, 24(4), 245-258, https://doi.org/10.1016/0025-3227(77)90070-6
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:
Latitude: 36.940833 * Longitude: -33.063344
Date/Time Start: 1974-08-03T00:00:00 * Date/Time End: 1974-08-03T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
CY-74-26-12 * Latitude: 36.940833 * Longitude: -33.063344 * Date/Time: 1974-08-03T00:00:00 * Elevation: -2690.0 m * Location: Mid-Atlantic Ridge * Campaign: FAMOUS_06-74 (FAMOUS74) * Basis: Le Noroit * Method/Device: Grab, on Cyana [Submersible] (GRAB_subCyana)
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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 II, pp. 253 of the related publication.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Lalou, Claude | |||
| 2 | Latitude of event | Latitude | Lalou, Claude | |||
| 3 | Longitude of event | Longitude | Lalou, Claude | |||
| 4 | Elevation of event | Elevation | m | Lalou, Claude | ||
| 5 | Identification | ID | Lalou, Claude | |||
| 6 | Deposit type | Deposit type | Lalou, Claude | |||
| 7 | DEPTH, sediment/rock | Depth sed | m | Lalou, Claude | Geocode | |
| 8 | Distance | Dist | mm | Lalou, Claude | from outer layer/surface | |
| 9 | Distance, minimum | Dist min | mm | Lalou, Claude | ||
| 10 | Distance, maximum | Dist max | mm | Lalou, Claude | ||
| 11 | Uranium-238 | 238U | mg/kg | Lalou, Claude | Alpha spectrometry | |
| 12 | Uranium-238, standard deviation | 238U std dev | ± | Lalou, Claude | Alpha spectrometry | |
| 13 | Uranium-234/Uranium-238 ratio | 234U/238U | Lalou, Claude | Alpha spectrometry | ||
| 14 | Uranium-234/Uranium-238 ratio, standard deviation | 234U/238U std dev | ± | Lalou, Claude | Alpha spectrometry | |
| 15 | Thorium-230 | 230Th | mg/kg | Lalou, Claude | Alpha spectrometry | |
| 16 | Thorium-230, standard deviation | 230Th std dev | ± | Lalou, Claude | Alpha spectrometry | |
| 17 | Thorium-230/Uranium-234 ratio | 230Th/234U | Lalou, Claude | Alpha spectrometry | ||
| 18 | Thorium-230/Uranium-234 ratio, standard deviation | 230Th/234U std dev | ± | Lalou, Claude | Alpha spectrometry | |
| 19 | Thorium-232 | 232Th | mg/kg | Lalou, Claude | Alpha spectrometry | |
| 20 | Thorium-232, standard deviation | 232Th std dev | ± | Lalou, Claude | Alpha spectrometry | |
| 21 | Uranium-238/Thorium-232 ratio | 238U/232Th | Lalou, Claude | Alpha spectrometry | ||
| 22 | Uranium-238/Thorium-232 ratio, standard deviation | 238U/232Th std dev | ± | Lalou, Claude | Alpha spectrometry |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
253 data points
Data
| 1 Event | 2 Latitude | 3 Longitude | 4 Elevation [m] | 5 ID | 6 Deposit type | 7 Depth sed [m] | 8 Dist [mm] | 9 Dist min [mm] | 10 Dist max [mm] | 11 238U [mg/kg] | 12 238U std dev [±] | 13 234U/238U | 14 234U/238U std dev [±] | 15 230Th [mg/kg] | 16 230Th std dev [±] | 17 230Th/234U | 18 230Th/234U std dev [±] | 19 232Th [mg/kg] | 20 232Th std dev [±] | 21 238U/232Th | 22 238U/232Th std dev [±] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL01 | Mn crust | 0 | 0.55 | 0.0 | 1.1 | 2.2 | 0.15 | 1.16 | 0.06 | 5.0 | 0.3 | 1.3 | 0.2 | 1.7 | 0.3 | ||
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL02 | Mn crust | 0 | 1.30 | 1.1 | 1.5 | 3.8 | 0.20 | 1.19 | 0.06 | 2.9 | 0.2 | 0.88 | 0.08 | 0.8 | 0.2 | 5.0 | 1.0 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL03 | Mn crust | 0 | 1.80 | 1.5 | 2.1 | 3.8 | 0.20 | 1.15 | 0.06 | 2.6 | 0.2 | 0.83 | 0.09 | 1.7 | 0.3 | 2.2 | 0.4 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL04 | Mn crust | 0 | 2.35 | 2.1 | 2.6 | 4.0 | 0.30 | 1.19 | 0.09 | 2.8 | 0.2 | 0.80 | 0.09 | 1.4 | 0.2 | 2.9 | 0.4 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL05 | Mn crust | 0 | 2.90 | 2.6 | 3.2 | 3.6 | 0.20 | 1.19 | 0.07 | 2.7 | 0.2 | 0.75 | 0.07 | 0.7 | 0.2 | 5.0 | 1.0 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL06 | Mn crust | 0 | 3.40 | 3.2 | 3.6 | 4.1 | 0.25 | 1.18 | 0.06 | 2.0 | 0.2 | 0.55 | 0.06 | 1.3 | 0.3 | 3.2 | 0.7 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL07 | Mn crust | 0 | 3.80 | 3.6 | 4.0 | 4.3 | 0.60 | 1.12 | 0.15 | 2.0 | 0.2 | 0.57 | 0.09 | 0.7 | 0.4 | 6.0 | 3.0 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL08 | Mn crust | 0 | 4.25 | 4.0 | 4.5 | 5.7 | 0.30 | 1.17 | 0.06 | 2.2 | 0.2 | 0.45 | 0.05 | 1.1 | 0.3 | 5.2 | 1.5 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL09 | Mn crust | 0 | 4.75 | 4.5 | 5.0 | 5.4 | 0.30 | 1.23 | 0.06 | 2.1 | 0.2 | 0.42 | 0.05 | 0.8 | 0.3 | 6.7 | 2.5 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL10 | Mn crust | 0 | 5.20 | 5.0 | 5.4 | 5.5 | 0.40 | 1.26 | 0.07 | 2.3 | 0.2 | 0.42 | 0.05 | 0.5 | 0.3 | 11.0 | 6.0 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL11 | Mn crust | 0 | 7.05 | 5.4 | 8.7 | 6.7 | 0.30 | 1.21 | 0.03 | 2.1 | 0.1 | 0.36 | 0.02 | 0.9 | 0.1 | 7.4 | 0.9 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL12 | Mn crust | 0 | 8.90 | 8.7 | 9.1 | 5.7 | 0.40 | 1.15 | 0.06 | 2.2 | 0.2 | 0.45 | 0.05 | 1.2 | 0.2 | 5.0 | 1.0 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL13 | Mn crust | 0 | 9.40 | 9.1 | 9.7 | 5.1 | 0.30 | 1.13 | 0.06 | 2.7 | 0.2 | 0.63 | 0.06 | 1.5 | 0.3 | 3.4 | 0.7 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL14 | Mn crust | 0 | 10.10 | 9.7 | 10.5 | 4.2 | 0.30 | 1.15 | 0.07 | 2.7 | 0.2 | 0.75 | 0.08 | 1.5 | 0.3 | 2.8 | 0.6 |
| CY-74-26-12 | 36.941 | -33.063 | -2690 | CY-74-26-12-1LAL15 | Mn crust | 0 | 10.75 | 10.5 | 11.0 | 3.0 | 0.18 | 1.19 | 0.05 | 2.3 | 0.2 | 0.82 | 0.09 | 1.1 | 0.2 | 2.7 | 0.6 |