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Volz, Jessica B; Lange, Mirko; Koehler, Dennis; Geibert, Walter; Stimac, Ingrid; Kasten, Sabine (2022): Radionuclide activities for sediment core SO268/2_125-1 (MUC-25) at a disturbed site after a small-scale dredge experiment during RV SONNE cruise SO268/2 in the CCZ, Pacific Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.944147, In: Volz, JB et al.: Radionuclide activities for sediment cores taken at disturbed sites after a small-scale dredge experiment during RV SONNE cruise SO268 in the CCZ, Pacific Ocean [dataset publication series]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.954924 (dataset in review)

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Abstract:
This dataset comprises downcore measurements of the activity of different radionuclides for a sediment core (MUC) retrieved from disturbed sites after a small-scale dredge experiment in the framework of the European collaborative JPI Oceans MiningImpact project onboard R/V SONNE cruise SO268 in 2019. The scientific work during cruise SO268 was part of the second phase of the MiningImpact project (Environmental impacts and risks of deep-sea mining) and is designed to assess the environmental impacts of deep-sea mining of polymetallic nodules in the Clarion-Clipperton Zone (CCZ) in the Pacific Ocean. After performing total acid digestions, the sediments were analyzed by isotope dilution using ICP-SF-MS (Element2, Thermo Scientific) for the determination of radionuclides at the Marine Geochemistry Lab, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven.
Keyword(s):
Anthropogenic disturbances; Clarion Clipperton Fracture Zone; deep sea mining; deep sea sediment; Geochemical data
Project(s):
Funding:
Federal Ministry of Education and Research (BMBF), grant/award no. 03F0812F: JPI-O MiningImpact: Auswirkungen von Manganknollenbergbau auf biogeochemische Prozesse und die Ausbreitung von Stoffen in der Tiefsee
Coverage:
Latitude: 11.864367 * Longitude: -117.012800
Date/Time Start: 2019-04-13T08:02:49 * Date/Time End: 2019-04-13T08:02:49
Minimum DEPTH, sediment/rock: 0.0025 m * Maximum DEPTH, sediment/rock: 0.1450 m
Event(s):
SO268/2_125-1 (MUC-25) * Latitude: 11.864367 * Longitude: -117.012800 * Date/Time: 2019-04-13T08:02:49 * Elevation: -4119.4 m * Location: Clarion-Clipperton Fraction Zone, North East Pacific Ocean * Campaign: SO268/2 * Basis: Sonne_2 * Method/Device: Multicorer with television (TVMUC) * Comment: GER Dredge; TV-MUC; failed
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Station labelStationVolz, Jessica B
2Area/localityAreaVolz, Jessica B
3CoreCoreVolz, Jessica B
4DEPTH, sediment/rockDepth sedmVolz, Jessica BGeocode
5Uranium-234234Udpm/gVolz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
6Uranium-234, error234U e±Volz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
7Uranium-238238Udpm/gVolz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
8Uranium-238, error238U e±Volz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
9Uranium-235235Udpm/gVolz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
10Uranium-235, error235U e±Volz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
11Thorium-232232Thdpm/gVolz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
12Thorium-232, error232Th e±Volz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
13Thorium-230230Thdpm/gVolz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
14Thorium-230, error230Th e±Volz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
15Thorium-230, supported230Th supdpm/gVolz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
16Thorium-230 excess230Th xsdpm/gVolz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
17Thorium-230 excess, error230Th xs e±Volz, Jessica BICP-SF-MS, Thermo Scientific, Element 2
18Uranium-234234Udpm/gVolz, Jessica BSalt-corrected
19Uranium-234, error234U e±Volz, Jessica BSalt-corrected
20Uranium-238238Udpm/gVolz, Jessica BSalt-corrected
21Uranium-238, error238U e±Volz, Jessica BSalt-corrected
22Uranium-235235Udpm/gVolz, Jessica BSalt-corrected
23Uranium-235, error235U e±Volz, Jessica BSalt-corrected
24Thorium-232232Thdpm/gVolz, Jessica BSalt-corrected
25Thorium-232, error232Th e±Volz, Jessica BSalt-corrected
26Thorium-230230Thdpm/gVolz, Jessica BSalt-corrected
27Thorium-230, error230Th e±Volz, Jessica BSalt-corrected
28Thorium-230, supported230Th supdpm/gVolz, Jessica BSalt-corrected
29Thorium-230 excess230Th xsdpm/gVolz, Jessica BSalt-corrected
30Thorium-230 excess, error230Th xs e±Volz, Jessica BSalt-corrected
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
435 data points

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