Robertson, D E; Rancitelli, L A (1973): (Table 2, Page 275) Elemental concentrations in manganese nodules used in seawater contact experiments [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.860224, Supplement to: Robertson, DE; Rancitelli, LA (1973): Trace element additions to seawater resulting from contact with ferromanganese nodule particles. In: Phase I Report - Inter-University Program of Research on Ferromanganese Deposits of the Ocean Floor. Seabed Assessment Program, IDOE, NSF, Washington D.C., USA, 273-277, hdl:2027/wu.89033915380
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Published: 1973 (exact date unknown) • DOI registered: 2016-06-02
Abstract:
The gross changes in concentrations of several trace elements in seawater after contact with ferro-manganese particle suspensions has been determined. Cobalt, Fe, and Zn concentrations in the seawater were greatly increased after contact with the par¬ticles. The concentrations of Rb, U, Cs, Sb, and Ag were altered to a lesser degree by this treatment. Similar results were observed where seawater was con¬tacted with suspensions of pelagic sediments. Of the trace elements measured, cobalt and iron appear to be the best elemental indicators of the presence of manganese mining effluents in the ocean. The addi¬tions of the essential elements Co, Fe and Zn toge¬ther with nutrients from the bottom waters may pro¬duce increased biological productivity. However, the toxic trace metals, such as Hg, Cu and Cd which could enter ocean water from the nodules and sedi¬ment and which may be high in effluent-affected areas should be investigated before conclusions as to the likely impact can be reached. Trace element analysis of seawater samples collected at a Pacific Ocean manganese nodule dredging site showed high t race element concentrations, but these are believed to have resulted from contamination during sample collection or storage rather than from the dredging operations.
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:
Median Latitude: 27.877757 * Median Longitude: -60.802767 * South-bound Latitude: 27.583300 * West-bound Longitude: -61.010000 * North-bound Latitude: 28.033300 * East-bound Longitude: -60.400000
Date/Time Start: 1972-07-18T00:00:00 * Date/Time End: 1972-07-28T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
RC15-25RD * Latitude: 27.583300 * Longitude: -60.400000 * Date/Time: 1972-07-24T00:00:00 * Elevation: -5536.0 m * Location: Atlantic Ocean * Campaign: RC15 * Basis: Robert Conrad * Method/Device: Dredge, rock (DRG_R)
RC15-28RD * Latitude: 28.033300 * Longitude: -60.998300 * Date/Time: 1972-07-28T00:00:00 * Elevation: -5105.0 m * Location: Atlantic Ocean * Campaign: RC15 * Basis: Robert Conrad * Method/Device: Dredge, rock (DRG_R)
RC15-43G (Station 212) * Latitude: 28.016670 * Longitude: -61.010000 * Date/Time: 1972-07-18T00:00:00 * Elevation: -4835.0 m * Location: Atlantic Ocean * Campaign: RC15 * Basis: Robert Conrad * Method/Device: Grab (GRAB)
Comment:
All samples have been homogenized to powder before analysis, being irradiated for 6 hours.
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 | Event label | Event | Robertson, D E | |||
| 2 | Identification | ID | Robertson, D E | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Robertson, D E | Geocode | |
| 4 | Iron | Fe | % | Robertson, D E | Neutron activation analysis | |
| 5 | Manganese | Mn | % | Robertson, D E | Neutron activation analysis | |
| 6 | Aluminium | Al | % | Robertson, D E | Neutron activation analysis | |
| 7 | Sodium | Na | % | Robertson, D E | Neutron activation analysis | |
| 8 | Cobalt | Co | % | Robertson, D E | Neutron activation analysis | |
| 9 | Barium | Ba | % | Robertson, D E | Neutron activation analysis | |
| 10 | Vanadium | V | % | Robertson, D E | Neutron activation analysis | |
| 11 | Lanthanum | La | mg/kg | Robertson, D E | Neutron activation analysis | |
| 12 | Thorium | Th | mg/kg | Robertson, D E | Neutron activation analysis | |
| 13 | Chromium | Cr | mg/kg | Robertson, D E | Neutron activation analysis | |
| 14 | Antimony | Sb | mg/kg | Robertson, D E | Neutron activation analysis | |
| 15 | Samarium | Sm | mg/kg | Robertson, D E | Neutron activation analysis | |
| 16 | Scandium | Sc | mg/kg | Robertson, D E | Neutron activation analysis | |
| 17 | Hafnium | Hf | mg/kg | Robertson, D E | Neutron activation analysis | |
| 18 | Europium | Eu | mg/kg | Robertson, D E | Neutron activation analysis | |
| 19 | Terbium | Tb | mg/kg | Robertson, D E | Neutron activation analysis | |
| 20 | Tantalum | Ta | mg/kg | Robertson, D E | Neutron activation analysis | |
| 21 | Description | Description | Robertson, D E |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
94 data points
Data
| 1 Event | 2 ID | 3 Depth sed [m] | 4 Fe [%] | 5 Mn [%] | 6 Al [%] | 7 Na [%] | 8 Co [%] | 9 Ba [%] | 10 V [%] | 11 La [mg/kg] | 12 Th [mg/kg] | 13 Cr [mg/kg] | 14 Sb [mg/kg] | 15 Sm [mg/kg] | 16 Sc [mg/kg] | 17 Hf [mg/kg] | 18 Eu [mg/kg] | 19 Tb [mg/kg] | 20 Ta [mg/kg] | 21 Description |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RC15-43G | RC15-43G-2-1R | 0 | 15.2 | 13.6 | 2.32 | 1.47 | 0.369 | 0.14 | 0.060 | 267 | 129 | 57 | 64 | 51 | 18 | 10.2 | 9.9 | 3.5 | 1.80 | Composite of nodules of size range 1-15 cm diameter with rough surface |
| RC15-43G | RC15-43G-1-7R | 0 | 16.7 | 14.1 | 2.50 | 1.38 | 0.348 | 0.15 | 0.053 | 253 | 131 | 57 | 73 | 50 | 21 | 14.2 | 10.7 | 6.1 | 1.20 | Composite of nodules of size range 1-10 cm diameter, spherical shape with smooth surface |
| RC15-28RD | RC15-28RD-1-4R | 0 | 16.1 | 15.8 | 2.48 | 1.25 | 0.329 | 0.14 | 0.055 | 222 | 125 | 78 | 59 | 44 | 20 | 14.3 | 9.8 | 5.3 | 0.53 | Composite of smooth spherical nodules, 1-7 cm diameter. Core of hard clay |
| RC15-28RD | RC15-28RD-1-5R | 0 | 16.6 | 13.0 | 2.53 | 1.45 | 0.329 | 0.24 | 0.060 | 232 | 136 | 64 | 75 | 43 | 20 | 15.4 | 9.3 | 3.0 | Composite of smooth spherical nodules, 1-7 cm diameter. Core of hard clay | |
| RC15-25RD | RC15-25RD-1-6R | 0 | 15.5 | 13.4 | 2.65 | 1.24 | 0.322 | 0.20 | 0.056 | 216 | 112 | 79 | 52 | 41 | 18 | 9.5 | 8.8 | 5.4 | 0.54 | Composite of Mn crust fragments 0.5-5 cm diameter, Hemispherical shape with pitted surface |