Xavier, A (1982): (Table 1, Page 94) Elemental abundances in ferromanganese nodules and crusts from the Pernambuco Plateau and guyots off northeast Brazil [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.857854, Supplement to: Xavier, A (1982): Ferromanganese deposits off northeast Brazil (S. Atlantic). Marine Geology, 47(1-2), 87-99, https://doi.org/10.1016/0025-3227(82)90021-4
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Abstract:
Ferromanganese deposits, mostly manganese crusts, are common in elevations along the northeastern Brazilian continental margin. Association of the deposits with more or less altered basaltic rock can be observed. On the Pernambuco Plateau and Ceara Guyot, ferromanganese deposits occur associated with phosphatic material and nodules. The mineralogical composition of the ferromanganese deposits indicates a predominance of the manganese oxide phase dMnO2. Low contents of Mn and Cu are characteristic of their chemical composition. Fe and Mn in the deposits probably precipitated from the sea water.
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
Xavier, A (1982): Fig. 2. Ferromanganese crust of tabular shape from Ceara Guyot. Marine Geology, 47(1-2), 90, hdl:10013/epic.46767.d001
Xavier, A (1982): Fig. 3. Nodules dredged from Pernambuco Plateau. Marine Geology, 47(1-2), 91, hdl:10013/epic.46767.d002
Project(s):
Coverage:
Median Latitude: -6.758854 * Median Longitude: -35.013333 * South-bound Latitude: -8.930000 * West-bound Longitude: -38.850000 * North-bound Latitude: -1.383330 * East-bound Longitude: -33.773330
Date/Time Start: 1976-01-01T00:00:00 * Date/Time End: 1976-01-01T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
ALMC_D-4 * Latitude: -8.131670 * Longitude: -33.813330 * Date/Time: 1976-01-01T00:00:00 * Elevation: -3384.0 m * Location: South Atlantic Ocean * Method/Device: Dredge (DRG) * Comment: Campaign: REMAC-76, Basis: Almirante Camara
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Xavier, A | |||
| 2 | Latitude of event | Latitude | Xavier, A | |||
| 3 | Longitude of event | Longitude | Xavier, A | |||
| 4 | Elevation of event | Elevation | m | Xavier, A | ||
| 5 | Sample ID | Sample ID | Xavier, A | |||
| 6 | DEPTH, sediment/rock | Depth sed | m | Xavier, A | Geocode | |
| 7 | Manganese | Mn | % | Xavier, A | X-ray fluorescence (XRF) | |
| 8 | Iron | Fe | % | Xavier, A | X-ray fluorescence (XRF) | |
| 9 | Nickel | Ni | % | Xavier, A | X-ray fluorescence (XRF) | |
| 10 | Cobalt | Co | % | Xavier, A | X-ray fluorescence (XRF) | |
| 11 | Copper | Cu | % | Xavier, A | X-ray fluorescence (XRF) | |
| 12 | Zinc | Zn | % | Xavier, A | X-ray fluorescence (XRF) | |
| 13 | Vanadium | V | % | Xavier, A | X-ray fluorescence (XRF) | |
| 14 | Titanium | Ti | % | Xavier, A | X-ray fluorescence (XRF) | |
| 15 | Barium | Ba | % | Xavier, A | X-ray fluorescence (XRF) | |
| 16 | Calcium | Ca | % | Xavier, A | X-ray fluorescence (XRF) | |
| 17 | Phosphorus | P | % | Xavier, A | X-ray fluorescence (XRF) | |
| 18 | Silicon | Si | % | Xavier, A | X-ray fluorescence (XRF) | |
| 19 | Aluminium | Al | % | Xavier, A | X-ray fluorescence (XRF) | |
| 20 | Potassium | K | % | Xavier, A | X-ray fluorescence (XRF) | |
| 21 | Area/locality | Area | Xavier, A |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
537 data points