(Table 1, page 168) Iron, manganese, and phosphorus concentrations in Fe-Mn-concretions from the Gulf of Bothnia, northern Baltic Sea
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
1967
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| _version_ | 1867170988555239424 |
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| author | Winterhalter, Boris Siivola, Jaakko |
| author_facet | Winterhalter, Boris Siivola, Jaakko |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_856766 |
| institution | PANGAEA |
| language | en |
| publishDate | 1967 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1, page 168) Iron, manganese, and phosphorus concentrations in Fe-Mn-concretions from the Gulf of Bothnia, northern Baltic Sea Winterhalter, Boris Siivola, Jaakko Analyst; Baltic Sea; DEPTH, sediment/rock; Description; Dredge; DRG; Elevation of event; Event label; Grab; GRAB; Iron oxide, Fe2O3; Latitude of event; Longitude of event; Manganese oxide; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Phosphorus pentoxide; Sample ID; Wet chemistry; WNT-A3; WNT-BII; WNT-BIII; WNT-KA4; WNT-P20; WNT-P9; WNT-RR5; WNT-SM2; WNT-US4 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. |
| title | (Table 1, page 168) Iron, manganese, and phosphorus concentrations in Fe-Mn-concretions from the Gulf of Bothnia, northern Baltic Sea |
| topic | Analyst; Baltic Sea; DEPTH, sediment/rock; Description; Dredge; DRG; Elevation of event; Event label; Grab; GRAB; Iron oxide, Fe2O3; Latitude of event; Longitude of event; Manganese oxide; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Phosphorus pentoxide; Sample ID; Wet chemistry; WNT-A3; WNT-BII; WNT-BIII; WNT-KA4; WNT-P20; WNT-P9; WNT-RR5; WNT-SM2; WNT-US4 |
| url | https://doi.org/10.1594/PANGAEA.856766 |