Sharma, P; Somayajulu, B L K (1979): Analysis of ferromanganese nodules from the North Pacific. PANGAEA, https://doi.org/10.1594/PANGAEA.868091, Supplement to: Sharma, P; Somayajulu, BLK (1979): Growth rates and composition of two ferromanganese nodules from the central North Pacific. in: Lalou, C. (Ed.), La Genèse Des Nodules de Manganèse. Centre National de la recherche Scientifique (CNRS), Gif-sur-Yvette, France, 281-288, hdl:10013/epic.48913.d001
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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 data set:
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
ARIES-012D * Latitude: 20.752000 * Longitude: 173.440000 * Date/Time: 1971-05-17T00:00:00 * Elevation: -1834.0 m * Location: Pacific Ocean * Campaign: ARIES * Basis: Thomas Washington * 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: ARIES * Basis: Thomas Washington * Device: Dredge (DRG)
Datasets listed in this publication series
- 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
- 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