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Manganese nodules from the Scotia Sea and Pacific Ocean sectors of the Southern Ocean display regional differences in chemical and mineralogical composition. Mn/Fe and todorokite/delta-MnO2 ratios decrease southeasterly from the Southwestern Pacific Basin to the Drake passage-Scotia Sea. Relative to Mn, the greatest enrichments of Co, Ti, V, Zn, Mo and Sn occur in Drake Passage-Scotia Sea nodules, while Ni and Cu are most enriched in the Southwestern Pacific Basin. Manganese mineralogy is directly related to the Mn/Fe ratio, so that todorokite rather than delta-MnO2 predominates when high manganese vs iron contents are found. Trace metal contents are also related to mineralogy, with high values of Ni, Cu, Zn and Sn, and low values of Co, Ti, V and Mo associated with high todorokite contents. Nodules having indistinct zeolitits/vesiculite nuclei tend to have Mn/Fe and todorokite/delta-MnO2 ratios significantly higher than average for the region in which they are found, whereas ferromanganese oxide fragments dredged from submarine rock surfaces usually have Mn/Fe and todorokite/delta-MnO2 ratios lower than regional average.

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PANGAEA - Publishing Network for Geoscientific & Environmental Data  


Meylan, Maurice A -  Goodell, H G - 

Id.: 70683053

Idioma: inglés  - 

Versión: 1.0

Estado: Final

Tipo:  application/zip, 3 datasets - 

Palabras claveArsenic -  As -  Atomic absorption spectrometry (AAS) -  B -  Ba -  Barium -  Be -  Beryllium -  Boron -  Ca -  Cadmium -  Calcium -  Cd -  Chromium -  Co -  Cobalt -  Copper -  Cr -  Cu -  Deposit type -  Depth -  Depth, bottom/max -  DEPTH, sediment/rock -  Depth, top/min -  Depth bot -  Depth top -  Description -  Event -  Fe -  Ga -  Gallium -  H2O -  Hg -  ID -  Identification -  Iron -  K -  La -  Lanthanum -  Lead -  Magnesium -  Manganese -  Mercury -  Mg -  Mn -  Mo -  Molybdenum -  Na -  Ni -  Nickel -  NOAA and MMS Marine Minerals Geochemical Database -  NOAA -  MMS -  P -  Pb -  Phosphorus -  Position -  Potassium -  Sample code/label -  Sample label -  Sc -  Scandium -  Se -  Selenium -  Shape -  Sn -  Sodium -  Sr -  Strontium -  Substrate -  Substrate type -  Th -  Thorium -  Ti -  Tin -  Titanium -  U -  Uranium -  V -  Vanadium -  Visual description -  Water in rock -  Wet chemistry -  X -  ray fluorescence (XRF) -  Y -  Yttrium -  Zinc -  Zirconium -  Zn -  Zr - 

Cobertura:  MEDIAN LATITUDE: -45.500398 * MEDIAN LONGITUDE: -93.008068 * SOUTH-BOUND LATITUDE: -65.617000 * WEST-BOUND LONGITUDE: 158.467000 * NORTH-BOUND LATITUDE: -32.967000 * EAST-BOUND LONGITUDE: -27.383000 * DATE/TIME START: 1962-01-01T00:00:00 * DATE/TIME END: 1966-01-01T00:00:00 - 

Tipo de recurso: Dataset  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: CC-BY: Creative Commons Attribution 3.0 Unported

Formatos:  application/zip, 3 datasets - 

Requerimientos técnicos:  Browser: Any - 

Relación: [IsBasedOn] Supplement to: Meylan, Maurice A; Goodell, H G (1976): Chemical composition of manganese nodules from the Pacific-Antarctic Ocean, Drake Passage and Scotia Sea - Relation to ferromanganese oxide mineralogy and nucleus type. in: Glasby, G.P., Katz, H.R. (Eds.), Marine Geological Investigations in the Southwest Pacific and Adjacent Areas - Papers Presented at the IDOE Workshop, Suva, Fiji, 1-6 September 1975, Technical Bulletin. CCOP-SOPAC (Committee for Co-Ordination of Joint Prospecting for Mineral Resources in South Pacific Offshore Areas), 99-117, http://store.pangaea.de/Projects/NOAA-MMS/Meylan-Goodell_1976.pdf
[References] 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
[References] 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

Fecha de contribución: 06-dic-2017



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