Cortelezzi, CR; Espósito, G; Iasi, R (1984): Investigation of manganese nodules from the Malvinas (Falkland) Plateau [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.863070, Supplement to: Cortelezzi, CR et al. (1984): Study of manganese nodules from the Malvinas (Falkland) Plateau, South Atlantic Ocean. In: Arndt Wauschkuhn, Cornelia Kluth & Richard A. Zimmermann (eds) Syngenesis and Epigenesis in the Formation of Mineral Deposits, Springer Berlin Heidelberg, 653 pp, 221-227, https://doi.org/10.1007/978-3-642-70074-3_21
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Abstract:
Manganese nodules occurring within marine sediments of presumably Upper Miocene-Lower Pliocene age from cores obtained by the Argentine oceanographic vessel ARA Islas Orcadas in 1977 on the Malvinas (Falkland) Plateau and neighbouring Scotia Sea were studied with the aim of comparing them with other fossil nodules found on the mainland of Argentina that were also ascribed to the marine environment. After optical mineralogical, chemical, X-ray and trace element analysis, the studied "nodules" proved to be actually wacke clasts cemented by manganese oxides with a high Fe/Mn ratio corresponding to a continental environment. The studied "nodules" thus differ from the Argentine mainland nodules and are supposed to have been transported from continental environments and then deposited in the marine realms. The wacke clasts became then nuclei for the deposition of the marine manganese oxides of the coatings. The proportion of trace elements, which is high, suggests the growth of the nodules in the marine environment.
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: -53.758335 * Median Longitude: -50.450000 * South-bound Latitude: -56.016670 * West-bound Longitude: -56.400000 * North-bound Latitude: -51.500000 * East-bound Longitude: -44.500000
Event(s):
IO13-1477.001-PC * Latitude: -56.016670 * Longitude: -56.400000 * Elevation: -4225.0 m * Recovery: 3.60 m * Location: South Atlantic Ocean * Campaign: IO13-1477 * Basis: Islas Orcadas * Method/Device: Piston corer (PC)
IO13-1477.006-PC * Latitude: -51.500000 * Longitude: -44.500000 * Elevation: -2485.0 m * Recovery: 2.31 m * Location: South Atlantic Ocean * Campaign: IO13-1477 * Basis: Islas Orcadas * Method/Device: Piston corer (PC)
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.
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Cortelezzi, CR; Espósito, G; Iasi, R (1984): Annotated record of the detailed examination of Mn deposits from ARA Islas Orcadas Cruise 13-14 core stations. https://doi.org/10.1594/PANGAEA.863067
- Cortelezzi, CR; Espósito, G; Iasi, R (1984): (Table 2, page 225) The composition of manganese nodules from the Scotia basin and the M. Ewing bank in the Southern Atlantic. https://doi.org/10.1594/PANGAEA.863068