Citation:

epic.48913.d001

Name: Analysis of ferromanganese nodules from the North Pacific
Published: 1979
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

10Be, U and Th isotopes, Ra, 210Pb, Mn, Fe and several trace elements are measured in the hydroxylamine hydrochloride leachates and residues of two ferro-manganese nodules collected from the Central North Pacific. The two nodules which are from the same location are about identical in composition. The 10Be deduced growth rates (2.3 and 3.3 mm/10-6 years) are in good agreement with those reported in literature for other nodules using independent techniques. The order of magnitude discrepancy between the integrated SUP-10 Be activity (in the nodules) with its production rate confirms the earlier explanations put forward by Bhat et al (1970). Additionally it is possible that nodule formation results from only a few hundred meters of the overlying waters. Hydroxylamine hydrochloride appears to be an ideal leachant for the authigenic components in the nodules _ the leach can conveniently be used for most of the analyses.

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):

NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS)

Coverage:

Median Latitude: 20.759500 * Median Longitude: 173.390000 * South-bound Latitude: 20.752000 * West-bound Longitude: 173.340000 * North-bound Latitude: 20.767000 * East-bound Longitude: 173.440000

Date/Time Start: 1971-05-17T00:00:00 * Date/Time End: 1971-05-18T00:00:00

Event(s):

ARIES-012D * Latitude: 20.752000 * Longitude: 173.440000 * Date/Time: 1971-05-17T00:00:00 * Elevation: -1834.0 m * Location: Pacific Ocean * Campaign: * Basis: Thomas Washington * Method/Device: Dredge (DRG)

ARIES-015D * Latitude: 20.767000 * Longitude: 173.340000 * Date/Time: 1971-05-18T00:00:00 * Elevation: -1285.0 m * Location: Pacific Ocean * Campaign: * Basis: Thomas Washington * Method/Device: Dredge (DRG)

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:

3 datasets

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Datasets listed in this publication series

Sharma, P; Somayajulu, BLK (1979): Annotated record of the detailed examination of Mn deposits from the R/V Thomas Washington ARIES expedition in the Pacific Ocean. https://doi.org/10.1594/PANGAEA.868073
Sharma, P; Somayajulu, BLK (1979): (Table 1-2 and 3, page 282-284) 10Be, U, Th, 226Ra and 210Pb analyses for layers inside ferromanganese crusts of the Pacific Ocean (ARIES-12D and ARIES-15D). https://doi.org/10.1594/PANGAEA.868074
Sharma, P; Somayajulu, BLK (1979): (Table 4-5, page 285) Radioactive and stable chemical composition of ferromanganese crusts of the Pacific Ocean (ARIES-12D and ARIES-15D). https://doi.org/10.1594/PANGAEA.868089