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  • NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS  (4)
  • Actinocythereis cf. scutigera; Actinocythereis sp.; Aglaiocypris sp.; Alocopocythere reticulata; Atjehella aff. semiplicata; Bairdoppillata sp.; Brachycythere sp.; Bythoceratina sp.; Callistocythere cf. flavidofusca intricatoides; Carinocythereis cf. hammata; Carinocythereis sp.; Chrysocythere sp.; Cythere cf. cribriformis; Cythere cf. papuensis; Cytherella cf. pulchra; Cytherelloidea sp.; Cytheroma dimorpha; Cytheroma sp.; DEPTH, sediment/rock; Elevation of event; Event label; GIK/IfG; GIK01056; GIK01058; GIK01074; GIK01082; GIK01083; GIK01084; GIK01085; GIK01086; GIK01087; GIK01088; GIK01096; GIK01143; GIK01153; GIK01172; GIK01173; GIK01174; GIK01190; GIK01191; GIK01194; GIK01197; GIK01198; GIK01199; Gravity corer (Kiel type); Hemicytheridea sp.; Hemikrithe sp.; Hemitrachyleberis sp.; Hulingsina sp.; IIOE - International Indian Ocean Expedition; Institute for Geosciences, Christian Albrechts University, Kiel; KAL; Kasten corer; Keijella sp.; Krithe sp.; Latitude of event; Longitude of event; Loxoconcha sp.; M1; M1_251; M1_253; M1_269; M1_277; M1_278 01083-B; M1_279 01084-B; M1_280A; M1_280B; M1_280C 01087-B; M1_281 01088-C; M1_289 01096-B; M1_330B 01143-B; M1_339 11053-1; M1_351; M1_352 01173-C; M1_353 01174-B; M1_368 01190-C; M1_369; M1_372; M1_375; M1_376 01198-B; M1_377 01199-G; Meteor (1964); Microcythere sp.; Moosella sp.; Neomonceratina sp.; Persian Gulf; Phlyctocythere sp.; Propontocypris sp.; Pseudocythere sp.; Quadracythere sp.; Ruggieria (Ruggieria) sp.; Ruggieria darwinii; SL
  • PANGAEA  (4)
  • American Chemical Society
  • Nature Publishing Group
  • Periodicals Archive Online (PAO)
  • 1975-1979
  • 1970-1974  (4)
  • 1974  (4)
Collection
Keywords
Publisher
  • PANGAEA  (4)
  • American Chemical Society
  • Nature Publishing Group
  • Periodicals Archive Online (PAO)
Years
  • 1975-1979
  • 1970-1974  (4)
Year
  • 1
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    Unknown
    Geochemical composition of a representative collection of manganese nodules and slabs collected in the Western Pacific (1974)
    PANGAEA
    In:  Supplement to: Shima, Makoto; Okada, Akihiko (1974): Study on the managanese nodule (VIII) Inhomogeneous chemical distribution of manganese nodules (in Japanese). Scientific Report of the Institute of Physical and Chemical Research, 50, 151-158, hdl:10013/epic.46490.d001
    Details
    Publication Date: 2023-08-28
    Description: Chemical analyses were performed on seveteen manganese nodules collected from the Pacific Ocean floor. The results were discussed compared with the previous data on the manganese nodules. Minerals were found to be todorokite, delta-MnO2 and other silicates, montmorillonite, illite, phillipsite and alpha-SiO2. Average composition shows that copper is concentrated on the deep sea nodules more than the shallow ones, and that the todorokite rich nodules contain more copper and nickel than the delta-MnO2 rich ones.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    Chemical composition of manganese micronodules from expedition VA-05/1 in the Pacific Ocean (1974)
    PANGAEA
    In:  Supplement to: Friedrich, Günther; Kunzendorf, Helmar; Plüger, W L (1974): Ship-borne geochemical investigations of deep-sea manganese-nodule deposits in the Pacific using a radioisotope energy-dispersive X-ray system. Journal of Geochemical Exploration, 3(4), 303-317, https://doi.org/10.1016/0375-6742(74)90001-6
    Details
    Publication Date: 2023-08-28
    Description: A radioisotope energy-dispersive X-ray (EDX) system has been used on board the German research vessel "Valdivia" during an exploration expedition in the northern equatorial Pacific in 1973. The instrumentation used consisted of an X-ray detection system incorporating a 30 mm2 effective-area Si (Li) detector with a measured energy resolution of 195 eV for Mn K alpha X-rays, standard nuclear electronics, a 1024-channel analyser and a data read-out unit. The X-ray spectra in the manganese-nodule samples were excited by a 30-mCi 238Pu source. The six elements Mn, Fe, Co, Ni, Cu and Zn were analysed on board. Precision values for the analyses were less than 3% for Mn, Fe, Ni, Cu and Zn and about 5% for Co. A total amount of 350 analyses was carried out during a one-month cruise. Average contents of 190 analysed whole manganese-nodule samples from all the sampling sites of the covered area were 23.3% Mn, 6.7% Fe, 0.23% Co, 1.16% Ni, 0.94% Cu and 0.10% Zn. The average content of the base metals expressed as the sum of the Co, Ni, Cu and Zn contents was 2.48%. A linear relationship between Mn and Ni in all analysed samples, including whole manganese-nodule samples, zones of manganese nodules and manganese crusts, was observed. The Mn/Ni ratio calculated by regression analysis was 23.0. Zonal variations of the chemical contents of the six elements in the manganese nodules were found. A size classification of the manganese nodules has been suggested. Geochemical correlations of Cu and Ni versus Mn/Fe in the investigated samples are given.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 3
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    Annotated record and detailed features of Mn deposits from R/V Bosei Maru Cruise GDP-8 stations (1974)
    PANGAEA
    In:  Supplement to: Shiki, Tsunemasa; Harada, K; Yoshida, H; Okuda, Y; Aoki, H; Hansen, Henry; Matsuo, K; Kobayashi, Kazuo; Takayama, Toshiaki (1974): Basaltic tuff obtained at the Daini-Kinan Seamount and acidic plutonic rocks collected at the Komabashi-Daini Seamount (in Japanese). Journal of the Geological Society of Japan, 80(10), 489-491, https://doi.org/10.5575/geosoc.80.489
    Details
    Publication Date: 2023-08-28
    Description: During the GDP-8 cruise of R/V Bosei-Maru, scientists from the Tokai University surveyed the Kinan seamount chain and the Kyushu-Palau Ridge in the Phillippine Sea. They dredged manganese nodules and ferromanganese crusts formed around basaltic tuff rocks and acid plutonic rock pebbles.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 4
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    Geochemistry on manganese deposit from the Median Valley of the Mid-Atlantic Ridge (1974)
    PANGAEA
    In:  Supplement to: Scott, Martha R; Scott, Robert B; Rona, Peter A; Butler, Louis W; Nalwalk, Andrew J (1974): Rapidly accumulating manganese deposit from the Median Valley of the Mid-Atlantic Ridge. Geophysical Research Letters, 1(8), 355-358, https://doi.org/10.1029/GL001i008p00355
    Details
    Publication Date: 2023-08-28
    Description: A manganese oxide crust from an extensive deposit in the median valley of the Mid-Atlantic Ridge was found to be unusually high in manganese (up to 39.4% Mn), low in Fe (as low as 0.01% Fe), low in trace metals and deficient in Th230 and Pa231 with respect to the parent uranium isotopes in the sample. The accumulation rate is 100 mm to 200 mm/10 million year, or 2 orders of magnitude faster than the typical rate for deep-sea ferromanganese deposits. The rapid growth rate and unusual chemistry are consistent with a hydrothermal origin or with a diagenetic origin by manganese remobilized from reduced sediments. Because of the association with an active ridge, geophysical evidence indicative of hydrothermal activity, and a scarcity of sediment in the sampling area, we suggest that a submarine hot spring has created the deposit.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
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