(Table 1, page 168) Iron, manganese, and phosphorus concentrations in Fe-Mn-concretions from the Gulf of Bothnia, northern Baltic Sea
Cobertura |
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 |
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Data(s) |
11/01/1967
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Resumo |
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. |
Formato |
text/tab-separated-values, 60 data points |
Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.856766 doi:10.1594/PANGAEA.856766 |
Idioma(s) |
en |
Publicador |
PANGAEA |
Relação |
Grant, J Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, doi:10.7289/V52Z13FT Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, doi:10.7289/V53X84KN |
Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
Fonte |
Supplement to: Winterhalter, Boris; Siivola, Jaakko (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, http://www.geologinenseura.fi/bulletin/Volume1-39/bt_229.pdf |
Palavras-Chave | #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 oxide; Sample ID; Wet chemistry; WNT-A3; WNT-BII; WNT-BIII; WNT-KA4; WNT-P20; WNT-P9; WNT-RR5; WNT-SM2; WNT-US4 |
Tipo |
Dataset |