Piper, David Z (1974): Analysis of Mn-deposits from the Pacific [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.872551, Supplement to: Piper, DZ (1974): Rare earth elements in ferromanganese nodules and other marine phases. Geochimica et Cosmochimica Acta, 38(7), 1007-1022, https://doi.org/10.1016/0016-7037(74)90002-7
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Abstract:
The concentrations of rare-earth elements (REE) have been measured in 31 ferromanganese nodules from the Pacific and Indian Oceans and vary by almost a factor of 5. Too few nodules have been analyzed to define possible regional trends. The shale-normalized patterns, however, permit division of nodules into two groups: those from depth greater than 3000–3500 m and those from less depth. The factors that determine this change in the relative concentration of REE may be related to the mineralogy of manganese phases and/or the transport of REE to the deep ocean by particulate matter. Comparison of the REE patterns of nodules with those of phillipsite, phosphorite, clays, CaCO3 and seawater suggests that the patterns of these phases reflect fractionation from an initial pattern closely resembling that of shale. By assuming that the accumulation rate of REE in clays, CaCO3 and nodules is represented by that for surface sediments, it has been possible to estimate an accumulation rate of phillipsite in pelagic sediments of the Pacific of 0.02 mg/cm2/yr.
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: 14.292521 * Median Longitude: -163.187330 * South-bound Latitude: -41.983000 * West-bound Longitude: 36.733290 * North-bound Latitude: 47.983000 * East-bound Longitude: -85.233000
Date/Time Start: 1950-09-13T00:00:00 * Date/Time End: 1970-09-06T00:00:00
Event(s):
2P-50 * Latitude: -13.883020 * Longitude: -150.583300 * Date/Time: 1963-01-01T00:00:00 * Elevation: -3695.0 m * Location: Pacific Ocean * Campaign: Prospector-63 * Basis: Prospector * Method/Device: Dredge (DRG)
5-37 * Latitude: 40.979000 * Longitude: -140.718500 * Date/Time: 1969-05-10T00:00:00 * Elevation: -4682.0 m * Penetration: 30 m * Recovery: 30.6 m * Location: North Pacific/HILL * Campaign: Leg5 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 4 cores; 30 m cored; 0 m drilled; 102 % recovery
ABR7_375-G (GSS_537_551) * Latitude: -29.099737 * Longitude: 36.733290 * Date/Time: 1964-08-25T00:00:00 * Elevation: -3890.0 m * Location: Indian Ocean * Campaign: ABR_Cruise7 * Basis: Anton Bruun * Method/Device: Dredge, rock (DRG_R)
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
- Piper, DZ (1974): (Tables 1, page 287) REE chemical composition of manganese nodules from the Pacific and Indian oceans. https://doi.org/10.1594/PANGAEA.872550
- Piper, DZ (1974): Annotated record of the detailed examination of Mn deposits from the R/V Thomas G. Thompson Cruise 28 in the Pacific Ocean. https://doi.org/10.1594/PANGAEA.872545