• Login
    View Item 
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Geochemistry of ferromanganese micronodules and associated Mn and trace metals diagenesis at high terrigenous depositional site of middle fan region, Bay of Bengal

    Thumbnail
    View/Open
    deep-sea_Res_II_50_961.pdf (558Kb)
    Date
    2003
    Author
    Chauhan, O.S.
    Metadata
    Show full item record
    Abstract
    The influence of sedimentation on the morphology, growth and geochemistry of the micronodules, and on Mn enrichment in the sediments of the Bay of Bengal has been evaluated. Mn accumulation is 307-219 mg cm u2 kyr u-1 in cores having 20-17 cm kyr u-1 sedimentation rate, but drops to 34-17.7 mg cm u2 kyr u-1 in cores with 3-4 cm kyr u-1 sedimentation rates. However, Mn-enrichment zone becomes thinner with increased sedimentation. The abundance of the micronodules increases, and they have been observed down to the deeper levels with higher contents of Mn Ni, Cu and Zn from the areas of the lower sedimentation. The results of the present study reveal that though the higher sedimentation may be conducive for higher Mn accumulation in the upper surfaces of the sediments, the growth, abundance and enrichment of Mn, Ni, Cu and Zn in the micronodules are mostly regulated by their residence time within Mn oxidation zone. The influence of residence time on the morphology and the internal structures of the micronodules are also evaluated
    URI
    http://drs.nio.org/drs/handle/2264/1256
    Collections
    • Scholarly literature [9074]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV