Radionuclide analysis on nodules from MANOP Site

doi:doi:10.1594/PANGAEA.882091

Radionuclide analysis on nodules from MANOP Site

Relationships among Th and Ra isotopes in nodule, sediment and water phases at MANOP Site S establish the most likely source for Th in the nodules, the frequency of nodule turning, and the similarity of micro and macro nodules. Manganese nodules and bottom waters have 230Th/232Th activity ratios considerably higher than other phases at this site suggesting that sea water is the likely source of Th for the nodules. Similar 230Th/232Th activity ratios in nodule tops and bottoms and in certain cases departure from expected 226Ra/230Th activity ratios in nodule tops and bottoms indicate that the nodules rotate every one to ten thousand years. The micro nodules have diffusion coefficients of Ra similar to macro nodule bottoms. I suggest that they may act as a carrier phase for transporting metals through oxic sediments to nodules.

Data and Resources

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Cite this as

Moore, Willard S (1984). Dataset: Radionuclide analysis on nodules from MANOP Site. https://doi.org/10.1594/PANGAEA.882091

DOI retrieved: 1984

Additional Info

Field	Value
Imported on	November 30, 2024
Last update	November 30, 2024
License	CC-BY-3.0
Source	https://doi.org/10.1594/PANGAEA.882091
Author	Moore, Willard S
Given Name	Willard S
Family Name	Moore
Source Creation	1984
Publication Year	1984
Resource Type	application/zip - filename: Moore_1984
Subject Areas	Name: Chemistry Name: Lithosphere
Related Identifiers	Title: Thorium and radium isotopic relationships in manganese nodules and sediments at MANOP Site S Identifier: https://doi.org/10.1016/0016-7037(84)90190-X Type: DOI Relation: IsSupplementTo Year: 1984 Source: Geochimica et Cosmochimica Acta Authors: Moore Willard S . Title: The NOAA and MMS Marine Minerals Geochemical Database Identifier: https://doi.org/10.7289/V52Z13FT Type: DOI Relation: References Year: 1992 Source: National Geophysical Data Center, NOAA Authors: Grant John Bruce , Moore Carla J , Alameddin George , Chen Kuiying , Barton Mark , Warnken Robin R , Virden William T , Moore Carla J . Title: The NOAA and MMS Marine Minerals Bibliography Identifier: https://doi.org/10.7289/V53X84KN Type: DOI Relation: References Year: 1992 Source: National Geophysical Data Center, NOAA Authors: Grant John Bruce , Moore Carla J , Alameddin George , Chen Kuiying , Barton Mark , Warnken Robin R , Virden William T , Moore Carla J .