Suess, Erwin; Djafari, Djafar (1977): Analysis of Mn-nodules from Breitgrund, Baltic Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.855247, Supplement to: Suess, E; Djafari, D (1977): Trace metal distribution in Baltic Sea ferromanganese concretions: inferences on accretion rates. Earth and Planetary Science Letters, 35(1), 49-54, https://doi.org/10.1016/0012-821X(77)90027-9
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Abstract:
The usually high concentrations of Zn, Pb, Cd, and Cu in the most recently accreted portions of ferromanganese nodules from the western Baltic Sea are thought to reflect increased metal input due to anthropogenic mobilization. If so, the point of increase represents a time horizon within the structure of the nodule. Similar trace metal distributions of radiometrically dated sediments from the same area suggest that the ferromanganese nodules have grown in thickness between 0.02 and 0.16 mm yr-1. From this growth rate anthropogenic Zn flux to the nodule surface was calculated to be 80 mg m-2 yr-1.
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:
Fig. 1. (a) Saucer-shaped ferromanganese nodule from the western Baltic Sea viewed from above (b) vertical section of the manganese layers of this nodule with location of metal analyses spots
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
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Latitude: 54.766660 * Longitude: 10.083330
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Comment:
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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.
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Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
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2 datasets
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Datasets listed in this publication series
- Suess, E; Djafari, D (1977): Description of a manganese nodule collected on the Breitgrund flat, Germany. https://doi.org/10.1594/PANGAEA.855245
- Suess, E; Djafari, D (1977): (Table 1, page 51) Trace metal distribution within the concentric structure of ferromanganese nodules and encrustations on living molluscs. https://doi.org/10.1594/PANGAEA.855246