Letter | Published:

New constraint on the maintenance of Mn nodules at the sediment surface

Nature volume 286, pages 880883 (28 August 1980) | Download Citation

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Abstract

Investigations into the association of manganese nodules with pelagic sediment in many areas of the deep ocean have mainly considered either (1) the source of metals in nodules, or (2) the occurrence of nodules predominantly at the sediment surface. The second problem is duscussed here. The mechanisms previously proposed have failed to consider that nodules retain their orientation at the sediment surface for several hundred-thousand years, during which time several tens of centimetres of sediment are fluxed down beneath them. Although we have no conclusive evidence, we consider the most plausible explanation for the surface occurrence of nodules to be bioturbation by infauna.

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Author information

Affiliations

  1. US Geological Survey, Menlo Park, California 94025

    • David Z. Piper
    •  & Bradford Fowler

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About this article

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DOI

https://doi.org/10.1038/286880a0

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