Halbach, Peter (2022): Chemical composition of seamount encrustations from the Midpac '81 as measured by the Bundesanstalt für Geowissenschaften und Rohstoffe (BGR) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.947057
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Published: 2022-08-15 • DOI registered: 2022-09-13
Abstract:
The ferromanganese crust samples studied have been taken from Central Pacific seamount areas during the research cruise Midpac 81. Two ferromanganese crust generations with different ages have been identified; in between a period of carbonate sedimentation and an episode of phosphorite formation have taken place. The older crust generation, therefore, is mostly impregnated by carbonate-apatite. chemical concentration was determined by X-ray fluorescence (XRF) by the Geowissenschaften und Rohstoffe (BGR) on-board ship.
Related to:
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: 15.685305 * Median Longitude: -167.995915 * South-bound Latitude: 9.148000 * West-bound Longitude: -171.063830 * North-bound Latitude: 20.078000 * East-bound Longitude: -164.808330
Date/Time Start: 1981-06-24T00:00:00 * Date/Time End: 1981-07-09T00:00:00
Minimum Elevation: -4150.0 m * Maximum Elevation: -1190.0 m
Event(s):
SO18_31 * Latitude: 9.148000 * Longitude: -164.808330 * Date/Time: 1981-06-24T00:00:00 * Elevation: -2600.0 m * Location: North Pacific Ocean * Campaign: SO18 (MIDPAC I) * Basis: Sonne * Method/Device: Dredge (DRG)
Comment:
Values in wt.% of dried substance
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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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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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This Table is digitized from Table 1 - Part 2, pp. 76 of the related publication.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Halbach, Peter | |||
| 2 | Identification | ID | Halbach, Peter | |||
| 3 | Deposit type | Deposit type | Halbach, Peter | |||
| 4 | Silicon dioxide | SiO2 | % | Halbach, Peter | X-ray fluorescence (XRF) | |
| 5 | Aluminium oxide | Al2O3 | % | Halbach, Peter | X-ray fluorescence (XRF) | |
| 6 | Calcium | Ca | % | Halbach, Peter | X-ray fluorescence (XRF) | |
| 7 | Phosphorus pentoxide | P2O5 | % | Halbach, Peter | X-ray fluorescence (XRF) | |
| 8 | Titanium dioxide | TiO2 | % | Halbach, Peter | X-ray fluorescence (XRF) | |
| 9 | Description | Description | Halbach, Peter |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
56 data points
Data
| 1 Event | 2 ID | 3 Deposit type | 4 SiO2 [%] | 5 Al2O3 [%] | 6 Ca [%] | 7 P2O5 [%] | 8 TiO2 [%] | 9 Description |
|---|---|---|---|---|---|---|---|---|
| SO18_31 | SO18_31DK-2-CKB-19 | Mn crust | 3.37 | 0.47 | 2.6 | 0.33 | 1.07 | Younger age deposit |
| SO18_43 | SO18_43DK-1-CKB-34 | Mn crust | 7.75 | 1.42 | 3.6 | 0.54 | 1.62 | Younger age deposit |
| SO18_57 | SO18_57DK-1-CKB-37 | Mn crust | 5.92 | 0.71 | 2.8 | 0.50 | 1.18 | Younger age deposit |
| SO18_75 | SO18_75DK-2-CKB-45 | Mn crust | 7.84 | 1.23 | 3.6 | 0.60 | 1.73 | Younger age deposit |
| SO18_76 | SO18_76DK-2-CKB-48 | Mn crust | 3.44 | 0.47 | 4.3 | 0.81 | 1.17 | Younger age deposit |
| SO18_31 | SO18_31DK-2-CKB-20 | Mn crust | 1.92 | 0.19 | 8.4 | 4.70 | 0.82 | Older age deposit with carbonate-apatite impregnation |
| SO18_111 | SO18_111DK-2-CKB-58 | Mn crust | 1.42 | 0.42 | 8.7 | 4.55 | 1.18 | Older age deposit with carbonate-apatite impregnation |