Winterhalter, Boris; Siivola, Jaakko (1967): (Table 1, page 168) Iron, manganese, and phosphorus concentrations in Fe-Mn-concretions from the Gulf of Bothnia, northern Baltic Sea [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.856766, Supplement to: Winterhalter, B; Siivola, J (1967): An electron microprobe study of the distribution of iron, manganese, and phosphorus in concretions from the Gulf of Bothnia, northern Baltic Sea. Comptes Rendus de la Société Géologique de Finlande, 39, 161-172, https://www.geologinenseura.fi/sites/geologinenseura.fi/files/bt_229.pdf
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Abstract:
Fe-Mn-concretions of a spheroidal type were found according to electron probe determinations to consist of alternating iron- and manganese-rich layers. This pattern was ascribed to seasonal variations in the physico-chemical conditions governing the precipitation of the hydrous oxides of iron and manganese. Calculations based on the rhythmic growth of the concretions investigated gave a mean accumulation rate of 0.15-0.20 mm/yr. The rather high phosphorus content (average 3.5 % P2O5) of the concretions was found to be concentrated in the iron-rich layers, probably as a result of the scavenging effect of ferric hydroxide.
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: 63.492593 * Median Longitude: 21.281482 * South-bound Latitude: 61.466670 * West-bound Longitude: 19.266667 * North-bound Latitude: 65.066670 * East-bound Longitude: 23.350000
Date/Time Start: 1958-01-01T00:00:00 * Date/Time End: 1963-06-26T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
WNT-A3 * Latitude: 64.850000 * Longitude: 22.300000 * Date/Time: 1963-06-26T00:00:00 * Elevation: -59.0 m * Location: Baltic Sea * Method/Device: Grab (GRAB) * Comment: Basis: Aranda (1953)
Comment:
Percentages are on a dry weight basis.
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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 | Winterhalter, Boris | |||
| 2 | Latitude of event | Latitude | Winterhalter, Boris | |||
| 3 | Longitude of event | Longitude | Winterhalter, Boris | |||
| 4 | Elevation of event | Elevation | m | Winterhalter, Boris | ||
| 5 | Sample ID | Sample ID | Winterhalter, Boris | |||
| 6 | DEPTH, sediment/rock | Depth sed | m | Winterhalter, Boris | Geocode | |
| 7 | Manganese oxide | MnO | % | Winterhalter, Boris | Wet chemistry | |
| 8 | Iron oxide, Fe2O3 | Fe2O3 | % | Winterhalter, Boris | Wet chemistry | |
| 9 | Phosphorus pentoxide | P2O5 | % | Winterhalter, Boris | Wet chemistry | |
| 10 | Analyst | Analyst | Winterhalter, Boris | |||
| 11 | Description | Description | Winterhalter, Boris |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
60 data points