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  • NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS  (2)
  • PANGAEA  (2)
  • American Physical Society (APS)
  • Oxford University Press
  • 1980-1984  (2)
  • 1970-1974
  • 1982  (2)
Sammlung
Schlagwörter
Verlag/Herausgeber
  • PANGAEA  (2)
  • American Physical Society (APS)
  • Oxford University Press
Erscheinungszeitraum
  • 1980-1984  (2)
  • 1970-1974
Jahr
  • 1
    facet.materialart.
    Unbekannt
    PANGAEA
    In:  Supplement to: Frakes, Lawrence A (1982): Metal chemistry of manganese nodules from the Cape Leeuwin field, southeast Indian Ocean. Marine Geology, 47(1-2), M1-M10, https://doi.org/10.1016/0025-3227(82)90014-7
    Publikationsdatum: 2023-08-28
    Beschreibung: Manganese nodules from 36 stations in the Cape Leeuwin field were analyzed for Mn, Fe, Ni, Cu and Co and the results were combined with earlier work to demonstrate quantitative and geographic variations. Nodules in this field are moderately enriched in Ni, moderately depleted in Cu, and contain intermediate values of Co. The sum of Ni + Cu vs. Mn/Fe plots along a hyperbolic regression line derived from nodules of the southeastern Pacific, suggesting that this relationship has general applicability. Regional variations in nodule grade (Ni + Cu + Co) assist in defining pathways of Antarctic Bottom Water between the Southeast Indian Ridge and the Wharton basin.
    Schlagwort(e): NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Materialart: Dataset
    Format: application/zip, 4 datasets
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    facet.materialart.
    Unbekannt
    PANGAEA
    In:  Supplement to: Haynes, Benjamin W; Law, Stephen L; Barron, David C (1982): Mineralogical and elemental description of Pacific manganese nodules. Bureau of Mines, US Department of the Interior, Information Circular, 8906, 60 pp, https://archive.org/details/mineralogicalele00hayn
    Publikationsdatum: 2023-08-28
    Beschreibung: The report is divided into three sections: morphology, mineralogy and elemental composition. The nodule morphology section defines what is considered a nodule for the study, and details the external characteristics and internal structure. Nodule mineralogy is discussed in three sections: manganese minerals, iron oxide minerals, and accessory minerals. The major manganese minerals discussed are todorokite, birnessite, and vernadite. The iron oxide minerals are less well known and include feroxyhyte, goethite, and lepidocrocite. Accessory minerals present include quartz, clays, and other silicates and nonsilicates. A discussion on moisture content is also included. The elemental composition section presents data on 74 elements occurring as cations or anions. Summary data, histograms, and interelement correlation coefficients are presented.
    Schlagwort(e): NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Materialart: Dataset
    Format: application/zip, 2 datasets
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
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