Surface layer Nd isotopic composition of ferromanganese crusts collected from the Takuyo-Daigo Seamount reflects ambient seawater

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Author(s)

    • AMAKAWA HIROSHI Amakawa Hiroshi
    • Project Team for Development of New-generation Research Protocol for Submarine Resources, Japan Agency for Marine-Earth Science Technology (JAMSTEC)
    • IIJIMA KOICHI Iijima Koichi
    • Project Team for Development of New-generation Research Protocol for Submarine Resources, Japan Agency for Marine-Earth Science Technology (JAMSTEC)
    • SUZUKI KATSUHIKO Suzuki Katsuhiko
    • Project Team for Development of New-generation Research Protocol for Submarine Resources, Japan Agency for Marine-Earth Science Technology (JAMSTEC)

Abstract

<p>The neodymium (Nd) isotopic composition of the surface layers of eleven ferromanganese crust samples collected from the Takuyo-Daigo Seamount (northwest Pacific Ocean) was determined. This is the first systematic study of the Nd isotopic composition of ferromanganese crusts collected by remotely operated vehicles (ROVs) from a single seamount over water depths of 1000–5400 m, representing intermediate to deep water masses in the ocean. We found that the depth profile of ferromanganese crusts is similar to the vertical seawater profile reported for a station close to the seamount. This similarity suggests that Nd in the surface layer of the ferromanganese crust is directly supplied by ambient seawater and reflects the oceanic water mass structure in the region. These samples are suitable for determining time-series Nd isotopic data to study past ocean circulation of intermediate to deep water masses in the northern Pacific.</p>

Journal

  • GEOCHEMICAL JOURNAL

    GEOCHEMICAL JOURNAL 51(1), e1-e7, 2017

    GEOCHEMICAL SOCIETY OF JAPAN

Codes

  • NII Article ID (NAID)
    130005317081
  • NII NACSIS-CAT ID (NCID)
    AA00654975
  • Text Lang
    ENG
  • ISSN
    0016-7002
  • NDL Article ID
    028718961
  • NDL Call No.
    Z53-R488
  • Data Source
    NDL  J-STAGE 
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