Nikolayev, D S; Yefimova, E I (1963): Manganese nodules recovered by R/V Vityaz expedition [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.858957, Supplement to: Nikolayev, DS; Yefimova, EI (1963): On the age of iron-manganese concretions from the Indian and Pacific Oceans. Geochemistry, 7, 703-714, hdl:10013/epic.47397.d001
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Uranium, radium, thorium and ionium were determined directly on seven concretions from three stations in the Indian Ocean, and on two concretions and a manganese-rich crust from two stations in the Pacific Ocean. The uranium content averages 3 to 5 gamma/g and the thorium content varies only slightly, but the Th/U ratio in the concretions is typically 2 to 5 in the Indian Ocean and 5 to 15.5 in the Pacific. The ionium content ranges from 1.0 x 10-9 to 3.6 10**-9 g/g in concretions from both oceans. Radium is more abundant in specimens from the Pacific Ocean (Ra = 3 - 12.7 x 10**-11 g/g) than from the Indian Ocean (1.5 - 5.2 x 10**-11 g/g). Analyses for Ca, Mn, Fe, Si, Ni, P, and ignition loss are also given. Radioactive equilibria between uranium, ionium, and radium are strongly disturbed throughout the concretions, and the RA/U and lo/U ratios generally exceed equilibrium ratios. Migration of radium from interior layers was established, so that neither determination of the ages of the concretions nor of their rates of growth can be considered reliable. The age of the concretions cannot exceed 800,000 years, and all grew within relatively short periods of time; there may have been "dormant" periods during growth. Estimates of growth rates are calculated from the radium and ionium contents; they show marked discordance.
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: 14.432500 * Median Longitude: 160.921650 * South-bound Latitude: 4.948300 * West-bound Longitude: 135.498300 * North-bound Latitude: 23.916700 * East-bound Longitude: -173.655000
Event(s):
VITYAZ3782-TR * Latitude: 23.916700 * Longitude: -173.655000 * Elevation: -4000.0 m * Location: Northwestern Basin, Pacific Ocean * Campaign: VITYAZ * Basis: Vityaz (ex-Mars) * Method/Device: Trawl net (TRAWL)
VITYAZ3996-TR * Latitude: 4.948300 * Longitude: 135.498300 * Elevation: -4580.0 m * Campaign: VITYAZ * Basis: Vityaz (ex-Mars) * Method/Device: Trawl net (TRAWL)
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
Download Data
Datasets listed in this publication series
- Nikolayev, DS; Yefimova, EI (1963): Annotated record of the detailed examination of manganese nodules and crusts recovered by R/V Vityaz in the Pacific Ocean. https://doi.org/10.1594/PANGAEA.858955
- Nikolayev, DS; Yefimova, EI (1963): (Tables 3-4, pages 708-709) Chemical composition of manganese nodules and crusts recovered by R/V Vityaz in the Pacific Ocean. https://doi.org/10.1594/PANGAEA.858956