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    Influence of regional and local topography on the distribution of polymetallic nodules in Central Indian Ocean Basin

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    Geo-Mar_Lett_8_173.pdf (590.8Kb)
    Date
    1988
    Author
    Kodagali, V.N.
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    Abstract
    Detailed bathymetric surveys from part of the Central Indian Ocean revealed several bathymetric features such as hills, slopes, valleys, and plains. Areas with a local relief of a few to hundreds of meters generally have a high abundance of polymetallic nodules with a patchy distribution. Areas with less relief have lesser abundance but a regular distribution. North-south topographic profiles have a smoother sea floor than the east-west ones. Near the minor faults, the abundance is high. Mn, Ni, Mn/Fe levels are higher in the plain areas, and rough terrains have high Fe, Co and low Mn/Fe levels
    URI
    http://drs.nio.org/drs/handle/2264/7034
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