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Growth Rates and Possible Age of a North Pacific Manganese Nodule

  • C. Lalou
  • E. Brichet
  • G. Poupeau
  • P. Romary
  • C. Jehanno
Part of the Marine Science book series (MR, volume 9)

Abstract

The rate of accumulation of a ferromanganese coating on a fragment of pillow basalt was estimated using a variety of techniques. Unsupported 230Th activity decrease in the oxide layer, K/A dating of the basalt, fission tracks dating of the glassy layer around the basalt, thickness of the palagonitization rind, and integrated 230Th activity give ages from approximately 3 × 106 years to 5 × 103 years.

Data suggest that the ferromanganese material formed rapidly (333 mm/106 years) and by hydrothermal or volcanic processes.

Keywords

Fission Track Pillow Lava Manganese Nodule 230Th Activity Oxide Deposit 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • C. Lalou
    • 1
  • E. Brichet
    • 1
  • G. Poupeau
    • 1
  • P. Romary
    • 1
  • C. Jehanno
    • 1
  1. 1.Centre des Faibles Radioactivites Laboratoire MixteCNRS-CEAGif-sur-YvetteFrance

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